NCP5500, NCV5500,
NCP5501, NCV5501
500 mA LDO Voltage
Regulator
These linear low drop voltage regulators provide up to 500 mA over
NCP5500, NCV5500, NCP5501, NCV5501
NCP5500 NCP5501
NCV5500 NCV5501
V
V
out
in Output
Input
C
in
C
out
10 F
R *
1
4.7 F
Enable
EN* NC/ADJ*
R
L
GND
OFF ON
R *
2
GND
*Applicable to NCP5500/NCV5500 only.
Figure 1. Typical Application Circuit
PIN FUNCTION DESCRIPTIONS
DPAK 3 DPAK 5 SOIC8
Pin
Pin No. Pin No. Pin No. Name
Description
1 8 EN 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
1 2 1 V Positive power supply input voltage.
in
2, Tab 3, Tab 2, 3, 6, 7 GND Ground. This pin is internally connected to the Tab heat sink.
3 4 4 V Regulated output voltage.
out
5 5 NC/ADJ No connection (Fixed output versions).
Voltageadjust 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.
V V
in out
Current Limit and
Error
Saturation Sense
Amplifier
Bandgap
Reference
+
Thermal
Shutdown
Connection for Fixed Output
Enable
EN*
Block*
GND
Connection for Adjustable Output
NC / ADJ*
*Applicable to NCP5500/NCV5500 only.
Figure 2. Block Diagram