Pin Description
Pin No.
Name
Function
1V
IN
Power supply input voltage.
2
GND
Power supply ground.
3V
NEG
Negative output voltage created by inverting V
05.
4V
NSW
V
NEG output connected through a series switch, NSW.
5
CE
Chip enable input. This pin is high for normal operation and low for shutdown. (See
Shutdown and Load Disconnect section in the Detailed Device Description division).
6
SDP
Positive side shutdown input. This pin is low for normal operation and high for positive
side shutdown and V
PSW load disconnect. (See Shutdown and Load Disconnect section in
the Detailed Device Description division).
7
SDN
Negative side shutdown input. This pin is low for normal operation and high for negative
side shutdown and V
NSW load disconnect. (See Shutdown and Load Disconnect section in
the Detailed Device Description division).
8C
2
The negative terminal of inverting charge-pump capacitor, C2.
9C
2
+
The positive terminal of inverting charge-pump capacitor, C2.
10
V
05
Regulated +5V output.
11
V
PSW
V
05 output connected through a series switch, PSW.
12
V
DBL
Voltage Doubler Output. (2.85V
≤ V
IN
≤ 5.4V. See Voltage Doubler section).
13
C
1
+
The positive terminal of doubling charge-pump capacitor, C1.
14
C
1
The negative terminal of doubling charge-pump capacitor, C1.
LM2685
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