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BQ25713 Datasheet(PDF) 7 Page - Texas Instruments |
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BQ25713 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 111 page  Table 6-1. Pin Functions (continued) PIN I/O DESCRIPTION NAME NUMBER PSYS 10 O Current mode system power monitor. The output current is proportional to the total power from the adapter and the battery. The gain is selectable through I2C. Place a resistor from PSYS to ground to generate output voltage. This pin can be floating if not in use. Its output voltage is clamped at 3.3 V. Place a capacitor in parallel with the resistor for filtering. REGN 28 PWR 6-V linear regulator output supplied from VBUS or VSYS. The LDO is active when VBUS above VVBUS_CONVEN. Connect a 2.2- or 3.3-μF ceramic capacitor from REGN to power ground. REGN pin output is for power stage gate drive. SCL 13 I I2C clock input. Connect to clock line from the host controller or smart battery. Connect a 10-kΩ pullup resistor according to specifications. SDA 12 I/O I2C open-drain data I/O. Connect to data line from the host controller or smart battery. Connect a 10-kΩ pullup resistor according to I2C specifications. SRN 19 PWR Charge current sense amplifier negative input. SRN pin is for battery voltage sensing as well. Connect a 0.1-μF filter cap cross battery charging sensing resistor and use 10-Ω contact resistor between SRN pin and battery charging sensing resistor. The leakage current on SRP and SRN are matched. SRP 20 PWR Charge current sense amplifier positive input. Connect a 0.1-μF filter cap cross battery charging sensing resistor and use 10-Ω contact resistor between SRP pin and battery charging sensing resistor. The leakage current on SRP and SRN are matched. SW1 32 PWR Buck mode switching node. Connect to the source of the buck half bridge high side n- channel MOSFET. SW2 23 PWR Boost mode switching node. Connect to the source of the boost half bridge high side n-channel MOSFET. VBUS 1 PWR Charger input voltage. An input low pass filter of 1 Ω and 0.47 µF (minimum) is recommended. VDDA 7 PWR Internal reference bias pin. Connect a 10-Ω resistor from REGN to VDDA and a 1-μF ceramic capacitor from VDDA to power ground. VSYS 22 PWR Charger system voltage sensing. The system voltage regulation maximum limit is programmed in ChargeVoltage register plus 150 mV and regulation minimum limit is programmed in VSYS_MIN register. Thermal pad – – Exposed pad beneath the IC. Always solder thermal pad to the board, and have vias on the thermal pad plane connecting to power ground planes. It serves as a thermal pad to dissipate the heat. www.ti.com BQ25730 SLUSE65A – FEBRUARY 2021 – REVISED JANUARY 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 7 Product Folder Links: BQ25730 |
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