Pin Description
Pin No.
Symbol
1
IN
LV4991M
Pin voltage
VCC = 3.6V
1.81
Description
Input pin
2
STBY
Standby pin
•Standby mode at 0 to 0.3V
•Operation mode at 1.9 to VCC
Equivalent circuit
VCC
1
3kΩ
-
+
VCC
3
VREF
4
CNT
21kΩ
2
1.81
Ripple filter pin
(For connection of capacitor for filter)
VCC
3
450kΩ
Second amplifier stop control pin
•Second amplifier stopped at 0 to
0.3V
GND
VCC
GND
VCC
5
OUT2
8
OUT1
6
GND
7
VCC
1.81
Power amplifier output pin
Ground pin
Power pin
11kΩ
4
VCC
-
+
10kΩ
GND
5
8
No.A1492-5/11