Typical Application Circuit

30118201

Connection Diagram

30118272

Top View

7-Lead TO-PMOD

Ordering Information

Order Number

Supplied As

Package Type

NSC Package Drawing

Package Marking

LMZ10503EXTTZ

250 Units in Tape and Reel

TO-PMOD-7

TZA07A

LMZ10503EXT

LMZ10503EXTTZX

500 Units in Tape and Reel

LMZ10503EXTTZE

45 Units in a Rail

Pin Descriptions

Pin Number

Name

Description

1

VIN

A low ESR input capacitance should be located as close as possible to VIN pin and GND pin.

2

EN

Active high enable input for the device.

3

SS

Soft-start control pin. An internal 2 uA current source charges and external capacitor connected

between this pin and GND (pin 4) to set the output voltage ramp rate during startup. This pin can also

be used to configure the tracking feature.

4

GND

Power ground and signal ground. Connect the bottom feedback resistor between this pin and the

feedback pin.

5

FB

Feedback pin. This is the inverting input of the error amplifier used for sensing the output voltage.

6, 7

VOUT

This is the output of the internal inductor. Connect an external resistor voltage divider from VOUT to

FB to ground.

EP

Exposed

Pad

Exposed pad thermal connection. Connect this pad to the PC board ground plane in order to reduce

thermal resistance value. It also provides an electrical connection to the input and output capacitors

ground terminals.

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