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BQ25120 Datasheet(PDF) 4 Page - Texas Instruments |
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BQ25120 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 68 page  GND RESET INT /MR IPRETE RM ISET BAT BAT TS ILIM /PG VINLS VINLS PGND SW PMID A B C D 1 2 3 4 SDA LSCTRL /CD SCL E IN LS/LDO SYS PMID GND 5 4 BQ25120, BQ25121 SLUSBZ9B – AUGUST 2015 – REVISED MAY 2016 www.ti.com Product Folder Links: BQ25120 BQ25121 Submit Documentation Feedback Copyright © 2015–2016, Texas Instruments Incorporated 7 Pin Configuration and Functions YFP Package 25-Pin (DSBGA) Top View Pin Functions PIN I/O DESCRIPTION NAME NO. IN A2 I DC Input Power Supply. IN is connected to the external DC supply. Bypass IN to GND with at least 1 µF of capacitance using a ceramic capacitor. PMID A3, B3 I/O High Side Bypass Connection. Connect at least 10-µF ceramic capacitor (at least 3µF of ceramic capacitance with DC bias derating) from PMID to GND as close to the PMID and GND pins as possible. GND A1, D5 Ground connection. Connect to the ground plane of the circuit. PGND A5 Power ground connection. Connect to the ground plane of the circuit. Connect the output filter cap from the buck converter to this ground as shown in the layout example. CD E2 I Chip Enable. Drive CD low to place the part in High-Z mode with battery only present, or enable charging when VIN is valid. Drive CD high for Active Battery mode when battery only is present, and disable charge when VIN is present. CD is pulled low internally with 900 kΩ. SDA E4 I/O I2C Interface Data. Connect SDA to the logic rail through a 10-k Ω resistor. SCL E5 I I2C Interface Clock. Connect SCL to the logic rail through a 10-k Ω resistor. ILIM C2 I Adjustable Input Current Limit Programming. Connect a resistor from ILIM to GND to program the input current limit. The input current includes the system load and the battery charge current. Connect ILIM to GND to set the input current limit to the internal default threshold. ILIM can also be updated through I2C. LSCTRL E3 I Load Switch and LDO Control Input. Pull high to enable the LS/LDO output, pull low to disable the LS/LDO output. ISET C1 I Fast-Charge Current Programming Input. Connect a resistor from ISET to GND to program the fast-charge current level. Connect a resistor from ISET to GND to set the charge current to the internal default. ISET can also be updated through I2C. While charging, the voltage at ISET reflects the actual charging current and can be used to monitor charge current if an ISET resistor is present. |
Similar Part No. - BQ25120_16 |
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Similar Description - BQ25120_16 |
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