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BQ77904 bảng dữ liệu(PDF) 37 Page - Texas Instruments

tên linh kiện BQ77904
Giải thích chi tiết về linh kiện  BQ77904, BQ77905 3-Series to 20-Series Ultra Low-Power Voltage, Current, Temperature, and Open-Wire Stackable Lithium-Ion Battery Protector
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Trang chủ  http://www.ti.com
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11 Layout
11.1 Layout Guidelines
1. Match SRN and SRP traces.
2. RIN filters, VDD, AVDD filters, and the CVDD capacitor should be placed close to the device pins.
3. Separate the device ground plane (low current ground) from the high current path. Filter capacitors should
reference to the low current ground path or device Vss.
4. In a stack configuration, the RCTRD and RCTRC should be placed closer to the lower device CTRD and CTRC
pins.
5. RGS should be placed near the FETs.
11.2 Layout Example
VDD
AVDD
VC5
:
:
VC1
AVSS
RC
Filters
AVSS
VDD
AVDD
VC5
:
:
VC1
AVSS
CHGU
DSG
DVSS
CTRD
CTRC
DVSS
AVSS
RC
Filters
DVSS
PACK+
PACK-
High current Path
Low current, local
ground for each device
Connect the device ground at
šZ
o}Á Œ
oo
[•
oo
- on each
cell group
Please filters
close to IC pins
Low current, local
device ground.
Separate from high
power path
Please CTRs
resistors close to
the lower device
Connect the bottom
device ground at BAT-.
Using BAT- as the mutual
point to connect high
and low current path
Please filters
close to IC pins
Connect AVSS and DVSS
to device ground plane
Figure 11-1. Layout Example
www.ti.com
BQ77904, BQ77905
SLUSCM3K – APRIL 2020 – REVISED JULY 2020
Copyright © 2020 Texas Instruments Incorporated
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Số phần tương tự - BQ77904_V04

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nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
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