SMB139 SUMMIT Microelectronics, Inc:, SMB139 Datasheet - Page 4

• Manufacturer Part Number: SMB139
• Description: ? Summit Microelectronics, Inc. 2005 ? 757 N. Mary Avenue ? Sunnyvale Ca 94085 ? Phone [phone] ? Fax [phone] Http //www.summitmicro.com/ 2121 3.0 6/19/2008 1 Programmable Linear Battery Charger
• Manufacturer: SUMMIT Microelectronics, Inc:

Summit Microelectronics, Inc
PIN DESCRIPTIONS
PACKAGE AND PIN CONFIGURATION
Number
Pin/Ball
C1
D1
C2
D2
C3
D3
A1
B1
E1
A2
B2
E2
A3
B3
E3
Pin Name
TRICKLE
VDDCAP
CHGSET
THERM
SENSE
AGND
BATT
STAT
GND
SDA
OUT
SCL
NC
EN
IN
Input/Output
Pin Type
Ground
Ground
Output
Output
Power
Input
Input
Input
Input
Input
Input
Input
Input
NC
Pin Description
Battery Voltage Sense – Connect directly to positive terminal of battery
and bypass with a 2.2uF or greater capacitor.
Trickle Charge – Connect directly to positive terminal of battery.
Charge Current Sense – Connect directly to positive terminal of battery.
No Connect (may be connected to GND for easier routing of Ball D2).
Status Indicator.
Battery Thermistor Sense.
VDD Bypass – Connect to VDD bypass capacitor with 1uF or greater
capacitor.
Analog Ground – Connect to isolated PCB ground.
Ground – Connect to isolated PCB ground.
Voltage Input (+4.35V to +6.5V) – Bypass with a 2.2uF or greater
capacitor.
Enable Input – Apply a logic-high voltage to enable and/or resume
charging. After assertion of the EN signal, the safety timers start
counting from the beginning. When unused, this pin should be tied to
GND (do not leave floating).
Two-level charge current adjustment. Connect to VDDCAP for full
charge current. Connect to GND for 40mA. When unused, this
pin should be tied to VDDCAP (do not leave floating).
I
I
Charge Current Output.
2
2
C Bus Data.
C Bus Clock.
1.3mm x 2.1mm
C1
D1
A1
B1
E1
2121 3.0 6/19/2008
uCSP
(Balls facing up)
Bottom View
lead-free
SMB139
A2
B2
C2
D2
E2
TM
-15
A3
B3
C3
D3
E3
SMB139
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