NCP5666
PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
Description
1
2
3, Tab
Vin
EN
GND
Positive Power Supply Input Voltage
Enable. This pin allows for on/off control of the regulator. To disable the device, connect to GND. If
this function is not in use, connect to Vin.
Power Supply Ground
4
NC
Not Connected. PCB runs allowable.
5
Vout
Regulated Output Voltage
Vin
Voltage
Reference
Block
Vref = 0.9 V
R3
Output
Stage
R4
Enable
EN
Block
Vout
Cc
R1
R2
GND
Figure 2. Block Diagram
http://onsemi.com
2