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BQ24271RGET Datasheet(PDF) 10 Page - Texas Instruments

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Part # BQ24271RGET
Description  1.5A, Singe Input, Single Cell Switchmode Li-Ion Battery Charger with Power Path
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ24271RGET Datasheet(HTML) 10 Page - Texas Instruments

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SW
SYS
BAT
BGATE
TS
DRV
PGND
PMID
USB
SDA
INT
BOOT
VSYS
(1.8V)
1uF
4.7uF
System
Load
STAT
10uF
1uF
1uF
D+
VBUS
D+
D-
GND
SCL
HOST
SCL
SDA
GPIO1
0.01uF
TEMP
PACK+
PACK-
VDRV
bq24270
D-
BYP
0.1uF
AGND
bq24270
bq24271
SLUSB10 – JUNE 2012
www.ti.com
PIN FUNCTIONS (continued)
PIN NO.
PIN NO.
bq24270
bq24271
PIN NAME
I/O
DESCRIPTION
YFF
RGE
YFF
RGE
Status Output. STAT is an open-drain output that signals charging
status and fault interrupts. STAT pulls low during charging. STAT is
high impedance when charging is complete or the charger is disabled.
STAT
G6
8
G6
8
O
When a fault occurs, a 128
μs pulse is sent out as an interrupt for the
host. STAT is enabled /disabled using the EN_STAT bit in the control
register. Connect STAT to a logic rail using an LED for visual indication
or through a 10 k
Ω resistor to communicate with the host processor.
There is an internal electrical connection between the exposed thermal
pad and the VSS pin of the device. The thermal pad must be
Thermal
—
Pad
—
Pad
-
connected to the same potential as the VSS pin on the printed circuit
PAD
board. Do not use the thermal pad as the primary ground input for the
device.
TYPICAL APPLICATION CIRCUIT
Figure 1. Typical Application Circuit– bq24270, Shown with No External Discharge FET
10
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Copyright © 2012, Texas Instruments Incorporated
Product Folder Link(s): bq24270 bq24271


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