component
BQ24052DSQT
Public Made by Adomby adom
Texas Instruments Battery Management, WSON-10-EP(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BQ24052DSQT
Texas Instruments · Battery Management · WSON-10-EP(2x2)
BQ24052DSQT from Texas Instruments, in a WSON-10-EP(2x2). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | IN | power_in | Input power connected to the external DC supply (AC adapter or USB port), recommended IN voltage range 3.5 V to 28 V with a 1 µF to 10 µF bypass capacitor from IN to VSS. |
| 2 | ISET | input | Programs the fast-charge current; an external resistor from ISET to VSS sets the value, with range 52.3 kΩ (10 mA) to 540 Ω (1 A). |
| 3 | VSS | power_in | Ground terminal; must be connected to ground at all times and to the same potential as the thermal pad. |
| 4 | PRE-TERM | input | Programs the current termination threshold (5% to 50% of IOUT) and sets the precharge current to twice the termination current, using a programming resistor of 1 kΩ to 10 kΩ. |
| 5 | D+ | input | USB port D+ input connection used for automatic input source detection. |
| 6 | D- | input | USB port D- input connection used for automatic input source detection. |
| 7 | ISET2 | input | Programs the input/output current limit for USB or adaptor: High = 500 mA max, Low = ISET, Float = 100 mA max. |
| 8 | CHG | output | Open-drain charge status output: low (FET on) indicates charging, high impedance indicates no charge or charge complete, with sink current limited to 15 mA. |
| 9 | TS | input | Temperature sense input for the battery-pack NTC thermistor; floating or pulled high enters TTDM and disables TS monitoring, while pulling it low disables the IC. |
| 10 | OUT | power_out | Battery connection and charge output with continuous current up to 1.25 A absolute maximum; the average system load should not prevent full charging within the 10-hour safety timer, with a 1 µF to 10 µF bypass capacitor. |
| 11 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-10-EP(2x2) |
| Category | Power Management (PMIC) |
| Pins | 11 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage range, IN | VIN | 3.5 | 28 | V | IN voltage range | 5 | |
| Input voltage, IN (absolute max) | VIN | -0.3 | 30 | V | with respect to VSS | 5 | |
| Output voltage, OUT (absolute max) | VOUT | -0.3 | 7 | V | with respect to VSS | 5 | |
| PRE-TERM, ISET, ISET2, TS, CHG, D+, D- voltage (absolute max) | -0.3 | 7 | V | with respect to VSS | 5 | ||
| Input current IN (absolute max) | IIN | 1.25 | A | 5 | |||
| Output current continuous OUT (absolute max) | IOUT | 1.25 | A | Continuous | 5 | ||
| Output sink current CHG (absolute max) | 15 | mA | 5 | ||||
| Junction temperature (absolute max) | TJ | -40 | 150 | °C | 5 | ||
| Storage temperature range | Tstg | -65 | 150 | °C | 5 | ||
| Junction temperature, operating | TJ | 0 | 125 | °C | 5 | ||
| IN operating voltage range (restricted by VDPM and VOVP) | 4.45 | 6.45 | V | 5 | |||
| RPRE-TERM precharge and termination programming resistor | RPRE-TERM | 1 | 10 | kΩ | Programs precharge and termination current thresholds | 5 | |
| RISET fast-charge programming resistor | RISET | 0.54 | 52.3 | kΩ | Fast-charge current programming resistor | 5 | |
| RTS 100k NTC thermistor range without entering TTDM (BQ24052) | RTS | 24 | 885 | kΩ | 100k NTC thermistor range without entering TTDM, BQ24052 | 5 | |
| Junction-to-ambient thermal resistance | RθJA | 63.5 | °C/W | DSQ (WSON) 10 pins | 6 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 79.5 | °C/W | DSQ (WSON) 10 pins | 6 | ||
| Junction-to-board thermal resistance | RθJB | 33.9 | °C/W | DSQ (WSON) 10 pins | 6 | ||
| Junction-to-top characterization parameter | ψJT | 7.8 | °C/W | DSQ (WSON) 10 pins | 6 | ||
| Junction-to-board characterization parameter | ψJB | 34.3 | °C/W | DSQ (WSON) 10 pins | 6 | ||
| Junction-to-case (bottom) thermal resistance | RθJC(bot) | 7.5 | °C/W | DSQ (WSON) 10 pins | 6 | ||
| Undervoltage lock-out | UVLO | 3.15 | 3.3 | 3.45 | V | Exit VIN: 0V → 4V; Update based on sim/char | 6 |
| Hysteresis on UVLO | VHYS_UVLO | 175 | 230 | 280 | mV | VIN: 4V→0V, VUVLO_FALL = VUVLO_RISE -VHYS-UVLO | 6 |
| Input power good detection threshold | VIN-DT | 30 | 80 | 145 | mV | Input power good if VIN > VOUT + VIN-DT; VOUT = 3.6V, VIN: 3.5V → 4V | 6 |
| Input overvoltage protection threshold | VOVP | 6.5 | 6.65 | 6.8 | V | VIN: 5V → 7V (50/52) | 6 |
| USB/Adaptor low input voltage protection, USB mode | VIN-DPM | 4.34 | 4.4 | 4.46 | V | Feature active in USB mode; Limit Input Source Current to 50mA; VOUT = 3.5V; RISET = 825Ω | 6 |
| USB/Adaptor low input voltage protection, Adaptor mode | VIN-DPM | 4.24 | 4.3 | 4.36 | V | Feature active in Adaptor mode; Limit Input Source Current to 50mA; VOUT = 3.5V; RISET = 825Ω | 6 |
| USB input I-Limit 100 mA | IIN-USB-CL | 85 | 92 | 100 | mA | ISET2 = Float; RISET = 825Ω | 6 |
| USB input I-Limit 500 mA | IIN-USB-CL | 430 | 462 | 500 | mA | ISET2 = High; RISET = 825Ω | 6 |
| Highest resistor value considered a fault (short) | RISET_SHORT | 280 | 500 | Ω | Riset: 600Ω → 250Ω, Iout latches off. Cycle power to Reset. USB100 mode. Monitored for Iout>90mA | 6 | |
| OUT pin short-circuit detection threshold / precharge threshold | VOUT(SC) | 0.75 | 0.8 | 0.85 | V | VOUT: 3V → 0.5V, no deglitch | 6 |
| Source current to OUT pin during short-circuit detection | IOUT(SC) | 10 | 15 | 20 | mA | 6 | |
| Battery regulation voltage | VOUT(REG) | 4.16 | 4.2 | 4.23 | V | VIN = 5.5V, IOUT = 25mA, VTS-45°C ≤ VTS ≤ VTS-0°C | 6 |
| Battery hot regulation voltage | VO_HT(REG) | 4.02 | 4.06 | 4.1 | V | VIN = 5.5V, IOUT = 25mA, VTS-60°C ≤ VTS ≤ VTS-45°C | 6 |
| Fast charge current factor KISET, 50 < IOUT < 1 A | KISET | 510 | 540 | 570 | AΩ | RISET = KISET /IOUT 50 < IOUT < 1 A | 7 |
| Fast charge current factor KISET, 25 < IOUT < 50 mA | KISET | 480 | 527 | 600 | AΩ | RISET = KISET /IOUT 25 < IOUT < 50 mA | 7 |
| Fast charge current factor KISET, 10 < IOUT < 25 mA | KISET | 350 | 520 | 680 | AΩ | RISET = KISET /IOUT 10 < IOUT < 25 mA | 7 |
| Precharge to fast-charge transition threshold | VLOWV | 2.4 | 2.5 | 2.6 | V | 7 | |
| Precharge current level, default setting | %PRECHG | 18 | 20 | 22 | %IOUT-CC | VOUT < VLOWV; RPRE-TERM = High Z (≥13kΩ); RISET = 1k | 7 |
| Precharge factor KPRE-CHG, 2k to 10kΩ | KPRE-CHG | 90 | 100 | 110 | Ω/% | VOUT < VLOWV, VIN = 5V, RPRE-TERM = 2k to 10kΩ; RISET = 1080Ω, RPRE-TERM = KPRE-CHG × %IFAST-CHG, where %IFAST-CHG is 20 to 100% | 7 |
| Precharge factor KPRE-CHG, 1k to 2kΩ | KPRE-CHG | 84 | 100 | 117 | Ω/% | VOUT < VLOWV, VIN = 5V, RPRE-TERM = 1k to 2kΩ; RISET = 1080Ω, RPRE-TERM = KPRE-CHG × %IFAST-CHG, where %IFAST-CHG is 10% to 20% | 7 |
| Termination current threshold, default setting | %TERM | 9 | 10 | 11 | %IOUT-CC | VOUT > VRCH; RPRE-TERM = High Z (≥13kΩ); RISET = 1k | 7 |
| Termination factor KTERM, 2k to 10kΩ | KTERM | 182 | 200 | 216 | Ω/% | VOUT > VRCH, VIN = 5V, RPRE-TERM = 2k to 10kΩ; RISET = 750Ω; KTERM × %IFAST-CHG, where %IFAST-CHG is 10 to 50% | 7 |
| Termination factor KTERM, 1k to 2kΩ | KTERM | 174 | 199 | 224 | Ω/% | VOUT > VRCH, VIN = 5V, RPRE-TERM = 1k to 2kΩ; RISET = 750Ω; KTERM × %IFAST-CHG, where %IFAST-CHG is 5 to 10% | 7 |
| Current for programming the term. and precharge with resistor | IPRE-TERM | 71 | 75 | 81 | μA | RPRE-TERM = 2k, VOUT = 4.15V | 7 |
| Elevated PRE-TERM current during start of charge (ITerm-Start) | ITerm-Start | 80 | 85 | 92 | μA | Elevated PRE-TERM current for tTerm-Start, during start of charge to prevent recharge of full battery | 7 |
| Recharge detection threshold, normal temp (offset from VO(REG)) | VRCH | -0.12 | -0.095 | -0.07 | V | VIN = 5V, VTS = 0.5V, VOUT: 4.25V → VRCH | 7 |
| Recharge detection threshold, hot temp (offset from VO_HT(REG)) | VRCH | -0.13 | -0.105 | -0.08 | V | VIN = 5V, VTS = 0.2V, VOUT: 4.15V → VRCH | 7 |
| VOUT reduced regulation during battery detect (offset from VO(REG)) | VREG-BD | -0.45 | -0.4 | -0.35 | V | VIN = 5V, VTS = 0.5V, Battery Absent | 7 |
| High battery detection threshold (offset from VO(REG)) | VBD-HI | -0.15 | -0.1 | -0.05 | V | VIN = 5V, VTS = 0.5V, Battery Absent | 7 |
| Low battery detection threshold (offset from VREG-BD) | VBD-LO | 0.05 | 0.1 | 0.15 | V | VIN = 5V, VTS = 0.5V, Battery Absent | 7 |
| NTC bias current, 100k NTC thermistor (BQ24052) | INTC-100k | 4.8 | 5 | 5.2 | μA | VTS = 0.3V | 8 |
| BQ24052 bias current when charging is disabled | INTC-DIS-100k | 4.4 | 5 | 5.8 | μA | VTS = 0V | 8 |
| INTC reduced prior to TTDM, BQ24052 | INTC-FLDBK-100k | 1.1 | 1.5 | 1.9 | μA | VTS: Set to 1.525V | 8 |
| Termination and timer disable mode threshold, enter | VTTDM(TS) | 1550 | 1600 | 1650 | mV | VTS: 0.5V → 1.7V; Timer Held in Reset | 8 |
| TS maximum voltage clamp | VCLAMP(TS) | 1800 | 1950 | 2000 | mV | VTS= Open (Float) | 8 |
| Low temperature CHG pending threshold | VTS-0°C | 1205 | 1230 | 1255 | mV | Low Temp Charging to Pending; VTS: 1V → 1.5V | 8 |
| Low temperature half charge threshold | VTS-10°C | 765 | 790 | 815 | mV | Normal charging to low temp charging; VTS: 0.5V → 1V | 8 |
| High temperature at 4.1V threshold | VTS-45°C | 263 | 278 | 293 | mV | Normal charging to high temp CHG; VTS: 0.5V → 0.2V | 8 |
| High temperature disable threshold | VTS-60°C | 170 | 178 | 186 | mV | Disable High temp charge to pending; VTS: 0.2V → 0.1V | 8 |
| Charge enable threshold, 100k NTC | VTS-EN-100k | 140 | 150 | 160 | mV | VTS: 0V → 0.175V | 8 |
| Temperature regulation limit | TJ(REG) | 125 | °C | 8 | |||
| Thermal shutdown temperature | TJ(OFF) | 155 | °C | 8 | |||
| Thermal shutdown hysteresis | TJ(OFF-HYS) | 20 | °C | 8 | |||
| Logic LOW input voltage on ISET2 | VIL | 0.4 | V | Sink more than 8μA | 8 | ||
| Logic HIGH input voltage on ISET2 | VIH | 1.4 | V | Source more than 8μA | 8 | ||
| ISET2 float voltage | VFLT | 650 | 900 | 1200 | mV | 8 | |
| Bias at D+ during detection routine | VD+ | 0.475 | 0.6 | 0.7 | V | Can source at least 200μA | 9 |
| Current sink at D- pin during detection routine | ID- | 50 | 100 | 150 | μA | VD- = 0.5V | 9 |
| Current limit at D+ pin during detection routine | ID+ | 1.5 | mA | VD+ = 0V | 9 | ||
| D+ leakage when not in detection mode | ID+_LEAK | 1 | μA | VD+ = 5V | 9 | ||
| D- leakage when not in detection mode | ID-_LEAK | 1 | μA | VD- = 5V | 9 | ||
| Output LOW voltage on CHG | VOL | 0.4 | V | ISINK = 5mA | 9 | ||
| Leakage current into IC on CHG | Ilkg | 1 | μA | V CHG = 5V | 9 | ||
| Deglitch time, fast-charge to precharge transition | tDGL2(LOWV) | 32 | ms | 10 | |||
| Deglitch time, termination detected | tDGL(TERM) | 29 | ms | 10 | |||
| Elevated termination threshold initially active | tTerm-Start | 1.25 | min | 10 | |||
| Precharge safety timer value | tPRECHG | 1700 | 1940 | 2250 | s | Restarts when entering precharge; Always enabled when in precharge | 10 |
| Charge safety timer value | tMAXCH | 34000 | 38800 | 45000 | s | Clears fault or resets at UVLO, TS (CE) disable, OUT Short, exiting LOWV and Refresh | 10 |
| Input overvoltage blanking time | tDGL(OVP-SET) | 113 | μs | VIN: 5V → 12V | 10 |
CAD (KiCad official)
- Symbol:
BQ24052DSQT - Footprint:
Package_DFN_QFN:Texas_DSQ0010A_WSON-10-1EP_2x2mm_P0.4mm_EP0.9x1.5mm - 3D model: WSON-10-EP(2x2) (KiCad packages3D, STEP)
- 3D model files:
bq24052dsqt-etched.step/bq24052dsqt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bq24052dsqt.step/bq24052dsqt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (39 pp, sha256
f6c87b271cd20230, retrieved 2026-11-06, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# BQ24052DSQT
**Texas Instruments** · Battery Management · WSON-10-EP(2x2)
BQ24052DSQT from Texas Instruments, in a WSON-10-EP(2x2). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | IN | power_in | Input power connected to the external DC supply (AC adapter or USB port), recommended IN voltage range 3.5 V to 28 V with a 1 µF to 10 µF bypass capacitor from IN to VSS. |
| 2 | ISET | input | Programs the fast-charge current; an external resistor from ISET to VSS sets the value, with range 52.3 kΩ (10 mA) to 540 Ω (1 A). |
| 3 | VSS | power_in | Ground terminal; must be connected to ground at all times and to the same potential as the thermal pad. |
| 4 | PRE-TERM | input | Programs the current termination threshold (5% to 50% of IOUT) and sets the precharge current to twice the termination current, using a programming resistor of 1 kΩ to 10 kΩ. |
| 5 | D+ | input | USB port D+ input connection used for automatic input source detection. |
| 6 | D- | input | USB port D- input connection used for automatic input source detection. |
| 7 | ISET2 | input | Programs the input/output current limit for USB or adaptor: High = 500 mA max, Low = ISET, Float = 100 mA max. |
| 8 | CHG | output | Open-drain charge status output: low (FET on) indicates charging, high impedance indicates no charge or charge complete, with sink current limited to 15 mA. |
| 9 | TS | input | Temperature sense input for the battery-pack NTC thermistor; floating or pulled high enters TTDM and disables TS monitoring, while pulling it low disables the IC. |
| 10 | OUT | power_out | Battery connection and charge output with continuous current up to 1.25 A absolute maximum; the average system load should not prevent full charging within the 10-hour safety timer, with a 1 µF to 10 µF bypass capacitor. |
| 11 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-10-EP(2x2) |
| Category | Power Management (PMIC) |
| Pins | 11 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage range, IN | VIN | 3.5 | | 28 | V | IN voltage range | 5 |
| Input voltage, IN (absolute max) | VIN | -0.3 | | 30 | V | with respect to VSS | 5 |
| Output voltage, OUT (absolute max) | VOUT | -0.3 | | 7 | V | with respect to VSS | 5 |
| PRE-TERM, ISET, ISET2, TS, CHG, D+, D- voltage (absolute max) | | -0.3 | | 7 | V | with respect to VSS | 5 |
| Input current IN (absolute max) | IIN | | | 1.25 | A | | 5 |
| Output current continuous OUT (absolute max) | IOUT | | | 1.25 | A | Continuous | 5 |
| Output sink current CHG (absolute max) | | | | 15 | mA | | 5 |
| Junction temperature (absolute max) | TJ | -40 | | 150 | °C | | 5 |
| Storage temperature range | Tstg | -65 | | 150 | °C | | 5 |
| Junction temperature, operating | TJ | 0 | | 125 | °C | | 5 |
| IN operating voltage range (restricted by VDPM and VOVP) | | 4.45 | | 6.45 | V | | 5 |
| RPRE-TERM precharge and termination programming resistor | RPRE-TERM | 1 | | 10 | kΩ | Programs precharge and termination current thresholds | 5 |
| RISET fast-charge programming resistor | RISET | 0.54 | | 52.3 | kΩ | Fast-charge current programming resistor | 5 |
| RTS 100k NTC thermistor range without entering TTDM (BQ24052) | RTS | 24 | | 885 | kΩ | 100k NTC thermistor range without entering TTDM, BQ24052 | 5 |
| Junction-to-ambient thermal resistance | RθJA | | 63.5 | | °C/W | DSQ (WSON) 10 pins | 6 |
| Junction-to-case (top) thermal resistance | RθJC(top) | | 79.5 | | °C/W | DSQ (WSON) 10 pins | 6 |
| Junction-to-board thermal resistance | RθJB | | 33.9 | | °C/W | DSQ (WSON) 10 pins | 6 |
| Junction-to-top characterization parameter | ψJT | | 7.8 | | °C/W | DSQ (WSON) 10 pins | 6 |
| Junction-to-board characterization parameter | ψJB | | 34.3 | | °C/W | DSQ (WSON) 10 pins | 6 |
| Junction-to-case (bottom) thermal resistance | RθJC(bot) | | 7.5 | | °C/W | DSQ (WSON) 10 pins | 6 |
| Undervoltage lock-out | UVLO | 3.15 | 3.3 | 3.45 | V | Exit VIN: 0V → 4V; Update based on sim/char | 6 |
| Hysteresis on UVLO | VHYS_UVLO | 175 | 230 | 280 | mV | VIN: 4V→0V, VUVLO_FALL = VUVLO_RISE -VHYS-UVLO | 6 |
| Input power good detection threshold | VIN-DT | 30 | 80 | 145 | mV | Input power good if VIN > VOUT + VIN-DT; VOUT = 3.6V, VIN: 3.5V → 4V | 6 |
| Input overvoltage protection threshold | VOVP | 6.5 | 6.65 | 6.8 | V | VIN: 5V → 7V (50/52) | 6 |
| USB/Adaptor low input voltage protection, USB mode | VIN-DPM | 4.34 | 4.4 | 4.46 | V | Feature active in USB mode; Limit Input Source Current to 50mA; VOUT = 3.5V; RISET = 825Ω | 6 |
| USB/Adaptor low input voltage protection, Adaptor mode | VIN-DPM | 4.24 | 4.3 | 4.36 | V | Feature active in Adaptor mode; Limit Input Source Current to 50mA; VOUT = 3.5V; RISET = 825Ω | 6 |
| USB input I-Limit 100 mA | IIN-USB-CL | 85 | 92 | 100 | mA | ISET2 = Float; RISET = 825Ω | 6 |
| USB input I-Limit 500 mA | IIN-USB-CL | 430 | 462 | 500 | mA | ISET2 = High; RISET = 825Ω | 6 |
| Highest resistor value considered a fault (short) | RISET_SHORT | 280 | | 500 | Ω | Riset: 600Ω → 250Ω, Iout latches off. Cycle power to Reset. USB100 mode. Monitored for Iout>90mA | 6 |
| OUT pin short-circuit detection threshold / precharge threshold | VOUT(SC) | 0.75 | 0.8 | 0.85 | V | VOUT: 3V → 0.5V, no deglitch | 6 |
| Source current to OUT pin during short-circuit detection | IOUT(SC) | 10 | 15 | 20 | mA | | 6 |
| Battery regulation voltage | VOUT(REG) | 4.16 | 4.2 | 4.23 | V | VIN = 5.5V, IOUT = 25mA, VTS-45°C ≤ VTS ≤ VTS-0°C | 6 |
| Battery hot regulation voltage | VO_HT(REG) | 4.02 | 4.06 | 4.1 | V | VIN = 5.5V, IOUT = 25mA, VTS-60°C ≤ VTS ≤ VTS-45°C | 6 |
| Fast charge current factor KISET, 50 < IOUT < 1 A | KISET | 510 | 540 | 570 | AΩ | RISET = KISET /IOUT 50 < IOUT < 1 A | 7 |
| Fast charge current factor KISET, 25 < IOUT < 50 mA | KISET | 480 | 527 | 600 | AΩ | RISET = KISET /IOUT 25 < IOUT < 50 mA | 7 |
| Fast charge current factor KISET, 10 < IOUT < 25 mA | KISET | 350 | 520 | 680 | AΩ | RISET = KISET /IOUT 10 < IOUT < 25 mA | 7 |
| Precharge to fast-charge transition threshold | VLOWV | 2.4 | 2.5 | 2.6 | V | | 7 |
| Precharge current level, default setting | %PRECHG | 18 | 20 | 22 | %IOUT-CC | VOUT < VLOWV; RPRE-TERM = High Z (≥13kΩ); RISET = 1k | 7 |
| Precharge factor KPRE-CHG, 2k to 10kΩ | KPRE-CHG | 90 | 100 | 110 | Ω/% | VOUT < VLOWV, VIN = 5V, RPRE-TERM = 2k to 10kΩ; RISET = 1080Ω, RPRE-TERM = KPRE-CHG × %IFAST-CHG, where %IFAST-CHG is 20 to 100% | 7 |
| Precharge factor KPRE-CHG, 1k to 2kΩ | KPRE-CHG | 84 | 100 | 117 | Ω/% | VOUT < VLOWV, VIN = 5V, RPRE-TERM = 1k to 2kΩ; RISET = 1080Ω, RPRE-TERM = KPRE-CHG × %IFAST-CHG, where %IFAST-CHG is 10% to 20% | 7 |
| Termination current threshold, default setting | %TERM | 9 | 10 | 11 | %IOUT-CC | VOUT > VRCH; RPRE-TERM = High Z (≥13kΩ); RISET = 1k | 7 |
| Termination factor KTERM, 2k to 10kΩ | KTERM | 182 | 200 | 216 | Ω/% | VOUT > VRCH, VIN = 5V, RPRE-TERM = 2k to 10kΩ; RISET = 750Ω; KTERM × %IFAST-CHG, where %IFAST-CHG is 10 to 50% | 7 |
| Termination factor KTERM, 1k to 2kΩ | KTERM | 174 | 199 | 224 | Ω/% | VOUT > VRCH, VIN = 5V, RPRE-TERM = 1k to 2kΩ; RISET = 750Ω; KTERM × %IFAST-CHG, where %IFAST-CHG is 5 to 10% | 7 |
| Current for programming the term. and precharge with resistor | IPRE-TERM | 71 | 75 | 81 | μA | RPRE-TERM = 2k, VOUT = 4.15V | 7 |
| Elevated PRE-TERM current during start of charge (ITerm-Start) | ITerm-Start | 80 | 85 | 92 | μA | Elevated PRE-TERM current for tTerm-Start, during start of charge to prevent recharge of full battery | 7 |
| Recharge detection threshold, normal temp (offset from VO(REG)) | VRCH | -0.12 | -0.095 | -0.07 | V | VIN = 5V, VTS = 0.5V, VOUT: 4.25V → VRCH | 7 |
| Recharge detection threshold, hot temp (offset from VO_HT(REG)) | VRCH | -0.13 | -0.105 | -0.08 | V | VIN = 5V, VTS = 0.2V, VOUT: 4.15V → VRCH | 7 |
| VOUT reduced regulation during battery detect (offset from VO(REG)) | VREG-BD | -0.45 | -0.4 | -0.35 | V | VIN = 5V, VTS = 0.5V, Battery Absent | 7 |
| High battery detection threshold (offset from VO(REG)) | VBD-HI | -0.15 | -0.1 | -0.05 | V | VIN = 5V, VTS = 0.5V, Battery Absent | 7 |
| Low battery detection threshold (offset from VREG-BD) | VBD-LO | 0.05 | 0.1 | 0.15 | V | VIN = 5V, VTS = 0.5V, Battery Absent | 7 |
| NTC bias current, 100k NTC thermistor (BQ24052) | INTC-100k | 4.8 | 5 | 5.2 | μA | VTS = 0.3V | 8 |
| BQ24052 bias current when charging is disabled | INTC-DIS-100k | 4.4 | 5 | 5.8 | μA | VTS = 0V | 8 |
| INTC reduced prior to TTDM, BQ24052 | INTC-FLDBK-100k | 1.1 | 1.5 | 1.9 | μA | VTS: Set to 1.525V | 8 |
| Termination and timer disable mode threshold, enter | VTTDM(TS) | 1550 | 1600 | 1650 | mV | VTS: 0.5V → 1.7V; Timer Held in Reset | 8 |
| TS maximum voltage clamp | VCLAMP(TS) | 1800 | 1950 | 2000 | mV | VTS= Open (Float) | 8 |
| Low temperature CHG pending threshold | VTS-0°C | 1205 | 1230 | 1255 | mV | Low Temp Charging to Pending; VTS: 1V → 1.5V | 8 |
| Low temperature half charge threshold | VTS-10°C | 765 | 790 | 815 | mV | Normal charging to low temp charging; VTS: 0.5V → 1V | 8 |
| High temperature at 4.1V threshold | VTS-45°C | 263 | 278 | 293 | mV | Normal charging to high temp CHG; VTS: 0.5V → 0.2V | 8 |
| High temperature disable threshold | VTS-60°C | 170 | 178 | 186 | mV | Disable High temp charge to pending; VTS: 0.2V → 0.1V | 8 |
| Charge enable threshold, 100k NTC | VTS-EN-100k | 140 | 150 | 160 | mV | VTS: 0V → 0.175V | 8 |
| Temperature regulation limit | TJ(REG) | | 125 | | °C | | 8 |
| Thermal shutdown temperature | TJ(OFF) | | 155 | | °C | | 8 |
| Thermal shutdown hysteresis | TJ(OFF-HYS) | | 20 | | °C | | 8 |
| Logic LOW input voltage on ISET2 | VIL | | | 0.4 | V | Sink more than 8μA | 8 |
| Logic HIGH input voltage on ISET2 | VIH | 1.4 | | | V | Source more than 8μA | 8 |
| ISET2 float voltage | VFLT | 650 | 900 | 1200 | mV | | 8 |
| Bias at D+ during detection routine | VD+ | 0.475 | 0.6 | 0.7 | V | Can source at least 200μA | 9 |
| Current sink at D- pin during detection routine | ID- | 50 | 100 | 150 | μA | VD- = 0.5V | 9 |
| Current limit at D+ pin during detection routine | ID+ | | | 1.5 | mA | VD+ = 0V | 9 |
| D+ leakage when not in detection mode | ID+_LEAK | | | 1 | μA | VD+ = 5V | 9 |
| D- leakage when not in detection mode | ID-_LEAK | | | 1 | μA | VD- = 5V | 9 |
| Output LOW voltage on CHG | VOL | | | 0.4 | V | ISINK = 5mA | 9 |
| Leakage current into IC on CHG | Ilkg | | | 1 | μA | V CHG = 5V | 9 |
| Deglitch time, fast-charge to precharge transition | tDGL2(LOWV) | | | 32 | ms | | 10 |
| Deglitch time, termination detected | tDGL(TERM) | | | 29 | ms | | 10 |
| Elevated termination threshold initially active | tTerm-Start | | | 1.25 | min | | 10 |
| Precharge safety timer value | tPRECHG | 1700 | 1940 | 2250 | s | Restarts when entering precharge; Always enabled when in precharge | 10 |
| Charge safety timer value | tMAXCH | 34000 | 38800 | 45000 | s | Clears fault or resets at UVLO, TS (CE) disable, OUT Short, exiting LOWV and Refresh | 10 |
| Input overvoltage blanking time | tDGL(OVP-SET) | | | 113 | μs | VIN: 5V → 12V | 10 |
## CAD (KiCad official)
- Symbol: `BQ24052DSQT`
- Footprint: `Package_DFN_QFN:Texas_DSQ0010A_WSON-10-1EP_2x2mm_P0.4mm_EP0.9x1.5mm`
- 3D model: WSON-10-EP(2x2) (KiCad packages3D, STEP)
- 3D model files: `bq24052dsqt-etched.step` / `bq24052dsqt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq24052dsqt.step` / `bq24052dsqt.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/bq24052.pdf) (39 pp, sha256 `f6c87b271cd20230`, retrieved 2026-11-06, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/bq24052dsqt-datasheet.pdf)