component
BQ24735RGRR
Public Made by Adomby adom
Texas Instruments Battery Management, VQFN-20(3.5x3.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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page.json+22−19@@ -53,31 +53,31 @@ "number": "1", "name": "ACN", "type": "input",- "description": "Input current sense resistor negative input; place an optional 0.1\u00b5F ceramic capacitor from ACN to GND for common-mode filtering and a 0.1\u00b5F ceramic capacitor from ACN to ACP for differential-mode filtering; common-mode range 4.5V to 24V."+ "description": "Input current sense resistor negative input; place an optional 0.1µF ceramic capacitor from ACN to GND for common-mode filtering and a 0.1µF ceramic capacitor from ACN to ACP for differential-mode filtering; common-mode range 4.5V to 24V." }, { "number": "2", "name": "ACP", "type": "input",- "description": "Input current sense resistor positive input; place a 0.1\u00b5F ceramic capacitor from ACP to GND for common-mode filtering and a 0.1\u00b5F ceramic capacitor from ACN to ACP for differential-mode filtering; common-mode range 4.5V to 24V."+ "description": "Input current sense resistor positive input; place a 0.1µF ceramic capacitor from ACP to GND for common-mode filtering and a 0.1µF ceramic capacitor from ACN to ACP for differential-mode filtering; common-mode range 4.5V to 24V." }, { "number": "3", "name": "CMSRC", "type": "input",- "description": "ACDRV charge pump source input; connect to the common source of ACFET (Q1) and RBFET (Q2) through a 4k\u03a9 series resistor to limit in-rush current; sets the reference for the 6V ACDRV gate overdrive."+ "description": "ACDRV charge pump source input; connect to the common source of ACFET (Q1) and RBFET (Q2) through a 4kΩ series resistor to limit in-rush current; sets the reference for the 6V ACDRV gate overdrive." }, { "number": "4", "name": "ACDRV", "type": "output",- "description": "Charge pump output driving the adapter NMOS selector (ACFET) and reverse-blocking NMOS (RBFET); outputs VCMSRC + 6V when ACDET is 2.4V-3.15V and VCC is above UVLO; place a 4k\u03a9 series resistor to limit in-rush current; minimum load resistance 500k\u03a9, turn-off resistance 5k\u03a9-7.4k\u03a9."+ "description": "Charge pump output driving the adapter NMOS selector (ACFET) and reverse-blocking NMOS (RBFET); outputs VCMSRC + 6V when ACDET is 2.4V-3.15V and VCC is above UVLO; place a 4kΩ series resistor to limit in-rush current; minimum load resistance 500kΩ, turn-off resistance 5kΩ-7.4kΩ." }, { "number": "5", "name": "ACOK", "type": "tri_state",- "description": "AC adapter detection open-drain output; pulled HIGH by external pull-up when ACDET is 2.4V-3.15V, VCC > UVLO, and VCC is \u2265275mV above SRN; pulled LOW internally otherwise; ACOK rising deglitch 150ms (first insertion) or 1.3s (default subsequent); output saturation voltage \u2264500mV at 5mA."+ "description": "AC adapter detection open-drain output; pulled HIGH by external pull-up when ACDET is 2.4V-3.15V, VCC > UVLO, and VCC is ≥275mV above SRN; pulled LOW internally otherwise; ACOK rising deglitch 150ms (first insertion) or 1.3s (default subsequent); output saturation voltage ≤500mV at 5mA." }, { "number": "6",@@ -89,19 +89,19 @@ "number": "7", "name": "IOUT", "type": "output",- "description": "Buffered current sense amplifier output selectable between adapter current (ACP-ACN) or charge current (SRP-SRN) via SMBus ChargeOption() bit[5]; output equals 20\u00d7 the differential sense voltage; output range 0V-3.3V, max output current 1mA, max load capacitance 100pF."+ "description": "Buffered current sense amplifier output selectable between adapter current (ACP-ACN) or charge current (SRP-SRN) via SMBus ChargeOption() bit[5]; output equals 20× the differential sense voltage; output range 0V-3.3V, max output current 1mA, max load capacitance 100pF." }, { "number": "8", "name": "SDA", "type": "bidirectional",- "description": "SMBus open-drain data I/O; connect to SMBus data line with a 10k\u03a9 pull-up resistor; input low threshold 0.8V, input high threshold 2.1V; output saturation voltage \u2264500mV at 5mA; supports 10kHz-100kHz clock."+ "description": "SMBus open-drain data I/O; connect to SMBus data line with a 10kΩ pull-up resistor; input low threshold 0.8V, input high threshold 2.1V; output saturation voltage ≤500mV at 5mA; supports 10kHz-100kHz clock." }, { "number": "9", "name": "SCL", "type": "input",- "description": "SMBus open-drain clock input; connect to SMBus clock line with a 10k\u03a9 pull-up resistor; input low threshold 0.8V, input high threshold 2.1V; supports 10kHz-100kHz clock frequency."+ "description": "SMBus open-drain clock input; connect to SMBus clock line with a 10kΩ pull-up resistor; input low threshold 0.8V, input high threshold 2.1V; supports 10kHz-100kHz clock frequency." }, { "number": "10",@@ -113,19 +113,19 @@ "number": "11", "name": "BATDRV", "type": "output",- "description": "Charge pump output driving the battery-to-system NMOS (BATFET); outputs VSRN + 6V to turn on BATFET and VSRN to turn off BATFET; charge pump current limit 40\u00b5A-60\u00b5A; place a 4k\u03a9 series resistor to limit in-rush current; minimum load resistance 500k\u03a9."+ "description": "Charge pump output driving the battery-to-system NMOS (BATFET); outputs VSRN + 6V to turn on BATFET and VSRN to turn off BATFET; charge pump current limit 40µA-60µA; place a 4kΩ series resistor to limit in-rush current; minimum load resistance 500kΩ." }, { "number": "12", "name": "SRN", "type": "input",- "description": "Charge current sense resistor negative input and battery voltage sense; connect through a 7.5\u03a9 series resistor then to GND via 0.1\u00b5F for common-mode filtering and across sense resistor via 0.1\u00b5F for differential filtering; output common-mode range 0V-19.2V."+ "description": "Charge current sense resistor negative input and battery voltage sense; connect through a 7.5Ω series resistor then to GND via 0.1µF for common-mode filtering and across sense resistor via 0.1µF for differential filtering; output common-mode range 0V-19.2V." }, { "number": "13", "name": "SRP", "type": "input",- "description": "Charge current sense resistor positive input; connect through a 10\u03a9 series resistor to the sense resistor; place a 0.1\u00b5F capacitor between SRP and SRN for differential filtering; SRP capacitance must not exceed 0.1\u00b5F for correct cycle-by-cycle OCP detection."+ "description": "Charge current sense resistor positive input; connect through a 10Ω series resistor to the sense resistor; place a 0.1µF capacitor between SRP and SRN for differential filtering; SRP capacitance must not exceed 0.1µF for correct cycle-by-cycle OCP detection." }, { "number": "14",@@ -137,43 +137,43 @@ "number": "15", "name": "LODRV", "type": "output",- "description": "Low-side synchronous power MOSFET gate driver output; connect to low-side n-channel MOSFET gate; turn-on resistance 7.5\u03a9 typ / 12\u03a9 max at VREGN = 6V, 10mA; turn-off resistance 0.9\u03a9 typ / 1.4\u03a9 max; dead time from high side to low side 20ns."+ "description": "Low-side synchronous power MOSFET gate driver output; connect to low-side n-channel MOSFET gate; turn-on resistance 7.5Ω typ / 12Ω max at VREGN = 6V, 10mA; turn-off resistance 0.9Ω typ / 1.4Ω max; dead time from high side to low side 20ns." }, { "number": "16", "name": "REGN", "type": "power_out",- "description": "Internal 6V linear regulator output supplied from VCC; regulates to 5.5V-6.5V when VCC > 6.5V and ACDET > 0.6V; current limit 50mA typ (75mA max) during charge; connect a 1\u00b5F ceramic capacitor to GND for stability."+ "description": "Internal 6V linear regulator output supplied from VCC; regulates to 5.5V-6.5V when VCC > 6.5V and ACDET > 0.6V; current limit 50mA typ (75mA max) during charge; connect a 1µF ceramic capacitor to GND for stability." }, { "number": "17", "name": "BTST", "type": "passive",- "description": "High-side MOSFET gate driver bootstrap supply; connect a 0.047\u00b5F ceramic capacitor from BTST to PHASE and an external Schottky bootstrap diode from REGN to BTST; a low-side refresh pulse is triggered when VBTST-VPHASE falls below 4.3V typ."+ "description": "High-side MOSFET gate driver bootstrap supply; connect a 0.047µF ceramic capacitor from BTST to PHASE and an external Schottky bootstrap diode from REGN to BTST; a low-side refresh pulse is triggered when VBTST-VPHASE falls below 4.3V typ." }, { "number": "18", "name": "HIDRV", "type": "output",- "description": "High-side synchronous power MOSFET gate driver output; connect to high-side n-channel MOSFET gate; turn-on resistance 6\u03a9 typ / 10\u03a9 max at VBTST-VPHASE = 5.5V, 10mA; turn-off resistance 0.65\u03a9 typ / 1.3\u03a9 max; dead time from low side to high side 20ns."+ "description": "High-side synchronous power MOSFET gate driver output; connect to high-side n-channel MOSFET gate; turn-on resistance 6Ω typ / 10Ω max at VBTST-VPHASE = 5.5V, 10mA; turn-off resistance 0.65Ω typ / 1.3Ω max; dead time from low side to high side 20ns." }, { "number": "19", "name": "PHASE", "type": "passive",- "description": "High-side MOSFET driver source and PWM switching node; connect to the source of the high-side n-channel MOSFET; voltage range \u22122V to 24V (recommended operating); low-side short-circuit protection monitored between PHASE and GND."+ "description": "High-side MOSFET driver source and PWM switching node; connect to the source of the high-side n-channel MOSFET; voltage range −2V to 24V (recommended operating); low-side short-circuit protection monitored between PHASE and GND." }, { "number": "20", "name": "VCC", "type": "power_in",- "description": "Input supply pin; diode-OR connection from AC adapter or battery; operating range 4.5V to 24V; UVLO rising threshold 3.5V-4V, falling hysteresis 340mV; use a 10\u03a9 resistor and 1\u00b5F capacitor to GND as a low-pass filter to limit inrush current."+ "description": "Input supply pin; diode-OR connection from AC adapter or battery; operating range 4.5V to 24V; UVLO rising threshold 3.5V-4V, falling hysteresis 340mV; use a 10Ω resistor and 1µF capacitor to GND as a low-pass filter to limit inrush current." }, { "number": "21", "name": "PowerPAD", "type": "power_in",- "description": "Exposed thermal and ground pad beneath the IC; analog ground and power ground are star-connected at this pad; must always be soldered to the PCB with thermal vias to analog and power ground planes; \u03b8JCbot = 4.4\u00b0C/W."+ "description": "Exposed thermal and ground pad beneath the IC; analog ground and power ground are star-connected at this pad; must always be soldered to the PCB with thermal vias to analog and power ground planes; θJCbot = 4.4°C/W." } ], "provenance": {@@ -253,5 +253,8 @@ "docs/bq24735rgrr-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ]+ ],+ "visibility": {+ "public": true+ } }