NCP5500, NCV5500, NCP5501, NCV5501
NCP5500
NCV5500
Input
C
in
10
mF
Enable
OFF ON
EN*
GND
GND
*Applicable to NCP5500/NCV5500 only.
NC/ADJ*
R
2
*
V
in
NCP5501
NCV5501
V
out
C
out
4.7
mF
Output
R
1
*
R
L
Figure 1. Typical Application Circuit
PIN FUNCTION DESCRIPTIONS
DPAK 3
Pin No.
−
DPAK 5
Pin No.
1
SOIC−8
Pin No.
8
Pin
Name
EN
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 V
in
.
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.
1
2, Tab
3
−
2
3, Tab
4
5
1
2, 3, 6, 7
4
5
V
in
GND
V
out
NC/ADJ
V
in
Current Limit and
Saturation Sense
V
out
Bandgap
Reference
Error
Amplifier
−
+
Thermal
Shutdown
Connection for Fixed Output
EN*
Enable
Block*
Connection for Adjustable Output
NC / ADJ*
*Applicable to NCP5500/NCV5500 only.
GND
Figure 2. Block Diagram
http://onsemi.com
2
ONSEMI [ ON SEMICONDUCTOR ]
