BQ24180_1 Datasheet, PDF (35/41 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and Accessory Power Connection

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To Inductor
Charge Current Direction
R _SNS
bq24180
SLUSA02 A – FEBRUARY 2010 – REVISED FEBRUARY 2010
To Capacitor and battery
Current Sensing Direction
CSOUT must be as large as
possible to avoid error when
using DCOUT
To CSIN and CSOUT pin
Figure 40. Sensing Resistor PCB Layout
Vin+
Vin-
1uF
4.7uF
VBUS
PMID
SW
PGND
Figure 41. Input Capacitor Position and PCB Layout Example
WCSP PACKAGE
(Top View)
VBUS
VBUS
BOOT
SCL
SDA
PMID
PMID
PMID
INT
CD
SW
SW
SW
PSEL
STAT
PGND
PGND
PGND
DCOUT DCOUT
CSIN
TS
DRV
CSOUT CSOUT
E
PACKAGE SUMMARY
CHIP SCALE PACKAGE
(Top Side Symbol For bq24180)
D
TI YMLLLLS
bq24180
0-Pin A1 Marker, TI-TI Letters, YM- Year Month Date Code, LLLL-Lot Trace Code, S-Assembly Site Code
CHIP SCALE PACKAGING DIMENSIONS
The bq24180 devices are available in a 20-bump chip scale package (YFF, NanoFree^TM). The package dimensions are:
· D = 2.2 ± 0.05 mm
· E = 2.4 ± 0.05 mm
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): bq24180
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