Pin Configuration and Functions

TPL720

SOT23-3 Package

Top View

TPL720

SOT89-3 Package

Top View

GND

OUT

Part Number

1

2

3

IN

OUT

IN

GND

IN

1

2

3

TPL720

SOT23-5 Package

Top View

IN

GND

EN

NC

Part Number

OUT

1

2

3

4

5

Table 1. Pin Functions: TPL720

Pin

Name

I/O

Description

SOT23-3

SOT23-5

SOT89-3

−

3

−

EN

I

Regulator enable pin. Drive EN high to turn on the

regulator; drive EN low to turn off the regulator. For

automatic startup, connect EN to IN directly.

1

2

1

GND

−

Ground reference pin. Connect the GND pin to the PCB

ground plane directly.

3

1

2

IN

I

Input voltage pin. Bypass IN to GND with a 1 μF or greater

capacitor.

−

4

−

NC

−

No connection.

2

5

3

OUT

O

Regulated output voltage pin. Bypass OUT to GND with a

2.2 μF or greater capacitor.

(1) Thermal pad must be connected to the PCB ground plane to maximize the thermal performance.

TPL720 Series

400-mA Output,1-µA Ultra-Low Quiescent Current LDO

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DA20241201A4