APL3512
Pin Description
PIN
NO.
FUNCTION
NAME
SOT-23-5 SOP-8 TDFN2x2-6
Output Voltage Pin. The output voltage follows the input voltage. When ENB is
high or EN is low the output voltage is discharged by an internal resistor.
1
2
8
3
6
3
VOUT
GND
Ground
EN
(APL3512A)
Enable Input. Pull this pin to high to enable the device and pull this pin to low to
disable device. The EN pin cannot be left floating.
3
6
2
4
ENB
(APL3512B)
Enable Input. Pull this pin to high to disable the device and pull this pin to low to
enable device. The ENB pin cannot be left floating.
Soft-Start Control Pin. Connect a capacitor to GND to control the soft-tart rate. If
the SS pin is left floating or tied to VIN the soft-tart time is 2ms when VIN=5V.
4
2
SS
5
-
1
1
5
VIN
NC
Power Supply Input. Connect this pin to external DC supply.
Internally not connected.
4, 5, 7
Block Diagram
VIN
VOUT
Charge
Pump
UVLO
Current
-Limit
Gate Driver and
Control Logic
Soft-Start
SS
EN/
ENB
OTP
GND
Copyright ã ANPEC Electronics Corp.
10
www.anpec.com.tw
Rev. A.6 - Aug., 2012
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
