NCP5500, NCV5500, NCP5501, NCV5501

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2

Figure 1. Typical Application Circuit

Input

OFF ON

Output

GND

NCP5500

EN*

NC/ADJ*

GND

4.7 mF

NCV5500

Enable

NCP5501

NCV5501

10 mF

*Applicable to NCP5500/NCV5500 only.

PIN FUNCTION DESCRIPTIONS

DPAK 3

DPAK 5

SOIC−8

Pin

Name

Description

Pin No.

Pin No.

Pin No.

−

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-

1

2

1

Positive power supply input voltage.

2, Tab

3, Tab

2, 3, 6, 7

GND

Ground. This pin is internally connected to the Tab heat sink.

3

4

4

Regulated output voltage.

−

5

5

NC/ADJ

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.

Figure 2. Block Diagram

−

+

NC / ADJ*

EN*

GND

Connection for Adjustable Output

Connection for Fixed Output

Error

Amplifier

Current Limit and

Saturation Sense

Bandgap

Reference

Thermal

Shutdown

*Applicable to NCP5500/NCV5500 only.

Enable

Block*