SMB239
ENGINEERING PACKAGE AND PIN DESCRIPTIONS
Pin Number
Pin Name
Pin Type
Pin Description
Battery Voltage Sense – Connect directly to positive terminal of
battery and bypass with a 4.7uF or greater capacitor.
1
BATT
Input
3, 8, 18, 20,
22, 30, 32, 33
10
GND
STAT
IN
Ground
Output
Input
Ground – Connect to isolated PCB ground.
Status Indicator.
Voltage Input (+4.35V to +6.5V) – Bypass with a 4.7uF or greater
12
capacitor.
29
21
19
14
THERM
SDA
Input
Input/Output
Input
Battery Thermistor Sense.
I2C Bus Data.
SCL
I2C Bus Clock.
OUT
Output
Charge Current Output.
32
31
30
29
28
27
26
25
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
SMB239
5mm x 5mm QFN-32
FOR ENGINEERING
SAMPLES ONLY
9
10
11
12
13
14
15
16
Summit Microelectronics, Inc
2129 3.0 2/23/2009
5
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
