BQ24296MRGER

@@ -0,0 +1,66 @@+# BQ24296MRGER++**Texas Instruments** · Battery Management · VQFN-24-EP(4x4)++BQ24296MRGER from Texas Instruments, in a VQFN-24-EP(4x4). 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 | VBUS | power_in | Charger input voltage. Internal n-channel reverse block MOSFET (RBFET) is connected between VBUS and PMID with VBUS on source. Place a 1-uF ceramic capacitor from VBUS to PGND close to IC. VBUS operating range 3.9-6.2 V (abs max 15 V). |+| 2 | PSEL | input | Power source selection input. High indicates a USB host source, Low indicates an adapter source. |+| 3 | PG | output | Open-drain active-low power good indicator. Connect to the pull-up rail via a 10-kOhm resistor. LOW indicates a good input source if the input voltage is between UVLO and ACOV, above SLEEP mode threshold, and current limit is above 30 mA. |+| 4 | STAT | output | Open-drain charge status output to indicate various charger operations. Connect to the pull-up rail via a 10-kOhm resistor. LOW = charge in progress, HIGH = charge complete or charge disabled. Blinks at 1 Hz on fault. |+| 5 | SCL | input | I2C interface clock. Connect SCL to the logic rail through a 10-kOhm pull-up resistor. |+| 6 | SDA | bidirectional | I2C interface data. Connect SDA to the logic rail through a 10-kOhm pull-up resistor. |+| 7 | INT | output | Open-drain interrupt output. Connect INT to a logic rail via a 10-kOhm resistor. Sends active-low 256-us pulse to host to report charger device status and fault. |+| 8 | OTG | input | USB current limit selection pin in buck mode, and active-high enable pin during boost (OTG) mode. In buck mode with USB host (PSEL=High): OTG=High -> IIN limit 500 mA; OTG=Low -> IIN limit 100 mA. Boost mode activated when REG01[5]=1. |+| 9 | CE | input | Active-low Charge Enable pin. Battery charging is enabled when REG01[5:4] = 01 and CE = Low. CE pin must be pulled high or low. |+| 10 | ILIM | input | ILIM sets the maximum input current limit by regulating the ILIM voltage at 1 V. A resistor connected from ILIM to GND sets IINMAX = (1V/RILIM) x KILIM. Actual input current limit is the lower of ILIM and REG00[2:0]. Minimum programmed limit is 500 mA. |+| 11 | TS | input | Temperature qualification voltage input. Connect an NTC thermistor via resistor divider from REGN to TS to GND. Charge suspends or boost disables when TS is out of range. 103AT-2 thermistor recommended. |+| 12 | QON | input | BATFET enable control in shipping mode. Low-to-high transition (min 2 ms high level) turns on BATFET to exit shipping mode. Internal 1-MOhm pull-down. If not used, may be NC or tied to TS pin (10k NTC thermistor only). |+| 13 | BAT | power_in | Battery connection point to the positive pin of the battery pack. The internal BATFET is connected between BAT and SYS. Connect a 10-uF capacitor close to the BAT pin. |+| 14 | BAT | power_in | Battery connection point (parallel with pin 13) to the positive pin of the battery pack. The internal BATFET is connected between BAT and SYS. |+| 15 | SYS | power_out | System connection point. The internal BATFET is connected between BAT and SYS. When the battery falls below the minimum system voltage, the switch-mode converter keeps SYS above the minimum system voltage. Max ~4.43 V, min programmable 3.5 V. |+| 16 | SYS | power_out | System connection point (parallel with pin 15). Switch-mode converter output; feeds system rail. |+| 17 | PGND | power_in | Power ground connection for high-current power converter node. Internally connected to the source of the n-channel LSFET. Connect directly to ground connection of input and output capacitors. Star-connect PGND to analog GND near IC. |+| 18 | PGND | power_in | Power ground connection (parallel with pin 17). Source of internal n-channel LSFET. |+| 19 | SW | output | Switching node connecting to output inductor. Internally SW is connected to the source of the n-channel HSFET and the drain of the n-channel LSFET. Connect a 0.047-uF bootstrap capacitor from SW to BTST. |+| 20 | SW | output | Switching node (parallel with pin 19) connecting to output inductor. |+| 21 | BTST | passive | PWM high-side driver positive supply (bootstrap). Internally BTST is connected to the anode of the boot-strap diode. Connect a 0.047-uF bootstrap capacitor from SW to BTST. |+| 22 | REGN | power_out | PWM low-side driver positive supply output (internal LDO). Internally REGN is connected to the cathode of the boot-strap diode. Connect a 4.7-uF (10-V) ceramic capacitor from REGN to analog GND. Also serves as bias rail of TS pin. |+| 23 | PMID | power_out | Connected to the drain of the reverse blocking MOSFET (RBFET) and the drain of HSFET. Connect a 1-uF capacitor on VBUS to PGND and 8.2-uF or more on PMID to PGND. |+| 24 | VBUS | power_in | Charger input voltage (parallel with pin 1). Internal RBFET connected between VBUS and PMID. |+| PAD | Thermal Pad | power_in | Exposed thermal pad beneath the IC for heat dissipation. Always solder thermal pad to the board, and have vias on the thermal pad plane star-connecting to PGND and ground plane for high-current power converter. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VQFN-24-EP(4x4) |+| Category | PMIC |+| Pins | 25 |++## Ordering variants++- `BQ24296MRGER`+- `BQ24296MRGERRGET`++## CAD (KiCad official)++- Symbol: `BQ24296MRGER`+- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm`+- 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/bq24296mrger.pdf) (52 pp, sha256 `8fd83e8f2362be7c`, retrieved 2026-08-17, tier: manufacturer)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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).++[Datasheet PDF](docs/bq24296mrger-datasheet.pdf)

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