BQ29209-Q1 Datasheet, PDF (14/23 Pages) Texas Instruments – Voltage Protection with Automatic Cell Balance

bq29209-Q1
SLUSC62A – JUNE 2015 – REVISED MARCH 2016
11 Layout
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11.1 Layout Guidelines
The following are the recommended layout guidelines:
1. Ensure the input filters to the VC1 and VC2 pins are as close to the IC as possible to improve noise
immunity.
2. If the OUT pin is used to control a high current path, for example: to blow a chemical fuse, then care should
be taken to ensure the high current path creates minimal interference of the bq29209-Q1 voltage sense
inputs.
3. The input RC filter on the VDD pin should be close to the terminal of the IC.
11.2 Layout Example
1 ^{Additional circuitry required based on usage of the OUT pin}
Via connects between two layers
PACK +
PACK -
1 ^VC2
OUT 8 ₁
PWRPAD
2 VC1
VDD 7
3 VC1_CB ^{CB_EN 6}
4 CD
GND 5
14
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