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BQ24166YFFR Datasheet(PDF) 9 Page - Texas Instruments |
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BQ24166YFFR Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 35 page  bq24165 bq24166 bq24167 www.ti.com SLUSAP4A – DECEMBER 2011 – REVISED MARCH 2012 PIN FUNCTIONS (continued) PIN NUMBER PIN bq24165 bq24166/7 I/O DESCRIPTION NAME YFF RGE YFF RGE Gate Drive Supply. DRV is the bias supply for the gate drive of the internal MOSFETs. bypass DRV to PGND with a 1 μF ceramic capacitor. DRV may be DRV F7 6 F7 6 O used to drive external loads up to 10mA. DRV is active whenever the input is connected and VSUPPLY > VUVLO and VSUPPLY > (VBAT + VSLP) Battery Connection. Connect to the positive terminal of the battery. BAT G1–G4 11, 12 G1–G4 11, 12 I/O Additionally, bypass BAT to GND with at least a 1 μF capacitor. Battery Pack NTC Monitor. Connect TS to the center tap of a resistor divider from DRV to GND. The NTC is connected from TS to GND. The TS function in the bq24166 provides 2 thresholds for Hot/ Cold shutoff, while the bq24167 TS – – G5 9 I has 2 additional thresholds for JEITA compliance. See the NTC Monitor section for more details on operation and selecting the resistor values. Connect TS to DRV to disable the TS function. Charge Status Open Drain Output. CHG is pulled low when a charge cycle starts and remains low while charging. CHG is high impedance when the CHG G6 8 G6 8 O charging terminates and when no supply exists. CHG does not indicate recharge cycles. Charge Current Programming Input. Connect a resistor from ISET to GND to ISET G7 5 G7 5 I program the fast charge current. The charge current is programmable from 550mA to 2.5A. There is an internal electrical connection between the exposed thermal pad and the PGND pin of the device. The thermal pad must be connected to the Thermal – Pad – Pad – same potential as the PGND pin on the printed circuit board. Do not use the Pad thermal pad as the primary ground input for the device. PGND pin must be connected to ground at all times. Copyright © 2011–2012, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link(s): bq24165 bq24166 bq24167 |
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