NCP5500, NCV5500, NCP5501, NCV5501
Input
Enable
OFF ON
Cin
10 mF
NCP5500
NCV5500
Vin
NCP5501
NCV5501
Vout
EN*
NC/ADJ*
GND
GND
Output
Cout
4.7 mF
R1*
RL
R2*
*Applicable to NCP5500/NCV5500 only.
Figure 1. Typical Application Circuit
PIN FUNCTION DESCRIPTIONS
DPAK 3 DPAK 5 SOIC−8
Pin No. Pin No. Pin No.
−
1
8
Pin
Name
EN
1
2, Tab
3
−
2
3, Tab
4
5
1
2, 3, 6, 7
4
5
Vin
GND
Vout
NC/ADJ
Description
Enable. This pin allows for on/off control of the regulator. High level turns on the
output. To disable the device, connect to ground. If this function is not in use, con-
nect to Vin.
Positive power supply input voltage.
Ground. This pin is internally connected to the Tab heat sink.
Regulated output voltage.
No connection (Fixed output versions).
Voltage−adjust input (Adjustable output version). Use an external voltage divider
to set the output voltage over a range of 1.25 V to 5.0 V.
Vin
Vout
Bandgap
Reference
Error
Amplifier
−
+
Current Limit and
Saturation Sense
Thermal
Shutdown
Enable
EN*
Block*
Connection for Fixed Output
GND
Connection for Adjustable Output
NC / ADJ*
*Applicable to NCP5500/NCV5500 only.
Figure 2. Block Diagram
http://onsemi.com
2