SMB239
PRODUCTION PACKAGE AND PIN DESCRIPTIONS
Pin/Ball
Number
A1
B1
C1
D1
A2
B2
C2
D2
Pin Name
BATT
GND
STAT
IN
THERM
SDA
SCL
OUT
Pin Type
Input
Ground
Output
Input
Input
Input/Output
Input
Output
Pin Description
Battery Voltage Sense – Connect directly to positive terminal of battery
and bypass with a 4.7uF or greater capacitor.
Ground – Connect to isolated PCB ground.
Status Indicator.
Voltage Input (+4.35V to +6.5V) – Bypass with a 4.7uF or greater
capacitor.
Battery Thermistor Sense.
I
2
C Bus Data.
I
2
C Bus Clock.
Charge Current Output.
A1
A2
SMB239
B1
B2
lead-free CSP-8
C1
C2
1.3mm x 2.1mm
D1
D2
0.5mm pitch
Bottom View
(Balls facing up)
Summit Microelectronics, Inc
2129 3.0 2/23/2009
4