CAT37

Doc. No. MD-5005 Rev. T

2

Characteristics subject to change without notice

ORDERING INFORMATION

Part Number

Package

Quantity per Reel

Package Marking

CAT37TDI-T3

TSOT-23 5-lead

(1)

3,000

LM

CAT37TDI-GT3

TSOT-23 5-lead

(2)

3,000

UL

PIN CONFIGURATION

TSOT-23 5-Lead

Top View

1mm maximum height

PIN DESCRIPTION

Pin Number

Name

Function

1

SW

Switch pin. This is the drain of the internal power switch. For minimum EMI,

minimize the trace area connected to this pin.

2

GND

Ground pin. Connect pin 2 to ground.

3

FB

LED (cathode) connection pin.

4

SHDN

5

VIN

Input supply pin. This pin should be bypassed with a capacitor to ground. A 1µF

capacitor mounted close to the pin is recommended.

Notes:

(1) Matte-Tin Plated Finish (RoHS-compliant).

(2) NiPdAu Plated Finish (RoHS-compliant).

SHDN

VIN

FB

2

3

15

4

SW

GND