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SMB139 Datasheet(PDF) 4 Page - Summit Microelectronics, Inc.

Part # SMB139
Description  Programmable Linear Battery Charger in 1.3 x 2.1 uCSP
PDF  27 Pages
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Manufacturer  SUMMIT [Summit Microelectronics, Inc.]
Direct Link  http://www.summitmicro.com
Logo SUMMIT - Summit Microelectronics, Inc.

SMB139 Datasheet(HTML) 4 Page - Summit Microelectronics, Inc.

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SMB139
Summit Microelectronics, Inc
2121 3.0 6/19/2008
4
Pin/Ball
Number
Pin Name
Pin Type
Pin Description
A1
BATT
Input
Battery Voltage Sense – Connect directly to positive terminal of battery
and bypass with a 2.2uF or greater capacitor.
B1
TRICKLE
Input
Trickle Charge – Connect directly to positive terminal of battery.
C1
SENSE
Input
Charge Current Sense – Connect directly to positive terminal of battery.
D1
NC
NC
No Connect (may be connected to GND for easier routing of Ball D2).
E1
STAT
Output
Status Indicator.
A2
THERM
Input
Battery Thermistor Sense.
B2
VDDCAP
Power
VDD Bypass – Connect to VDD bypass capacitor with 1uF or greater
capacitor.
C2
AGND
Ground
Analog Ground – Connect to isolated PCB ground.
D2
GND
Ground
Ground – Connect to isolated PCB ground.
E2
IN
Input
Voltage Input (+4.35V to +6.5V) – Bypass with a 2.2uF or greater
capacitor.
A3
EN
Input
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).
B3
CHGSET
Input
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).
C3
SDA
Input/Output
I
2C Bus Data.
D3
SCL
Input
I
2C Bus Clock.
E3
OUT
Output
Charge Current Output.
C1
C2
A2
B2
E1
A1
B1
D1
D2
E2
C3
B3
SMB139
lead-free
uCSPTM-15
1.3mm x 2.1mm
A3
E3
D3
PIN DESCRIPTIONS
PACKAGE AND PIN CONFIGURATION
Bottom View
(Balls facing up)



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