component
BQ24072TRGTR
Public Unreviewedby Ray
Texas Instruments Battery Management, QFN-16-EP(3x3). Datasheet-verified pinout, KiCad symbol/footprint/3D.
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Symbol & Footprint
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README
markdownBQ24072TRGTR
Texas Instruments · Battery Management · QFN-16-EP(3x3)
BQ24072TRGTR from Texas Instruments, in a QFN-16-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | TS | bidirectional | External NTC thermistor input. Connect to the center tap of a resistor divider from VIN to GND with the NTC in parallel with the bottom resistor to monitor battery pack temperature. Set the divider to a 20% ratio if the TS function is not used. |
| 2 | BAT | power_out | Charger power stage output and battery voltage sense input. Connect to the positive terminal of the battery. Bypass BAT to VSS with a 4.7 uF to 47 uF ceramic capacitor. |
| 3 | BAT | power_out | Charger power stage output and battery voltage sense input. Connect to the positive terminal of the battery. Bypass BAT to VSS with a 4.7 uF to 47 uF ceramic capacitor. |
| 4 | /CE | input | Charge Enable, active-low input. Drive high to place the charger in standby mode (OUT active, battery supplement mode available). Drive low to enable charging. Internally pulled down with ~285 kOhm; do not leave unconnected. |
| 5 | EN2 | input | Input current limit configuration input. Combined with EN1, selects between 100 mA (USB100), 500 mA (USB500), external ILIM resistor, or standby (USB suspend) modes per Table 1. Internally pulled down with ~285 kOhm; do not leave unconnected. |
| 6 | EN1 | input | Input current limit configuration input. Combined with EN2, selects the maximum input current and USB compliance mode per Table 1. Internally pulled down with ~285 kOhm; do not leave unconnected. |
| 7 | /PGOOD | output | Open-drain Power Good status indication output. Pulls low to VSS when a valid input source is detected; high-impedance when input power is out of range. Connect to a logic rail through a 1 kOhm to 100 kOhm resistor, or use with an LED for visual indication. |
| 8 | VSS | power_in | Ground return. Connect to the thermal pad and to the ground rail of the circuit. |
| 9 | /CHG | output | Open-drain charging status indication output. Pulls low to VSS while the battery is charging; high-impedance when charging is complete or the charger is disabled. Flashes to indicate a timer fault. Connect to a logic rail through a 1 kOhm to 100 kOhm resistor, or use with an LED. |
| 10 | OUT | power_out | System supply output. Provides a regulated output when the input is below the OVP threshold and above the regulation voltage. When the input is out of range, OUT is connected to VBAT (except when SYSOFF is high on BQ24075T/BQ24079T). Bypass OUT to VSS with a 4.7 uF to 47 uF ceramic capacitor. |
| 11 | OUT | power_out | System supply output. Provides a regulated output when the input is below the OVP threshold and above the regulation voltage. When the input is out of range, OUT is connected to VBAT (except when SYSOFF is high on BQ24075T/BQ24079T). Bypass OUT to VSS with a 4.7 uF to 47 uF ceramic capacitor. |
| 12 | ILIM | input | Adjustable input current limit programming input. Connect a 1.07 kOhm to 7.5 kOhm resistor from ILIM to VSS to set the maximum input current (when EN2=1, EN1=0). Leaving ILIM unconnected disables all charging. |
| 13 | IN | power_in | Input power connection to the external DC supply (AC adapter or USB port). Operating range 4.35 V to 6.6 V; tolerates up to 26 V without damage (operation suspended above OVP). Bypass IN to VSS with a 1 uF to 10 uF ceramic capacitor. |
| 14 | TMR | input | Timer programming input. Controls the pre-charge and fast-charge safety timers. Connect TMR to VSS to disable all safety timers; connect an 18 kOhm to 72 kOhm resistor from TMR to VSS to program the timer length. Leave unconnected for default timer values. |
| 15 | TD | input | Termination Disable input (BQ24072T only). Drive TD high to disable charger termination; drive low to enable termination. TD is checked at startup only and cannot be changed during operation. Internally pulled down with ~285 kOhm; do not leave unconnected. |
| 16 | ISET | bidirectional | Fast-charge current programming input and monitor. Connect a 590 Ohm to 3 kOhm resistor from ISET to VSS to set the fast-charge current level; charging is disabled if left open. While charging, the ISET voltage reflects the actual charge current and can be used to monitor charge current. |
| 17 | PAD | power_in | Exposed thermal pad on the underside of the package. Must be connected to the same potential as VSS on the PCB for thermal performance. Do not use the thermal pad as the primary ground input; VSS pin 8 must be tied to ground at all times. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | QFN-16-EP(3x3) |
| Category | PMIC |
| Pins | 17 |
Ordering variants
Same part, different packaging or reel option.
BQ24072TRGTRBQ24072TRGTRRGTTBQ24075TRGTRBQ24075TRGTTBQ24079TRGTRBQ24079TRGTT
CAD (KiCad official)
- Symbol:
BQ24072TRGTR - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
6f09e139e13a7bca, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).