Simplified Application Schematic

30109001

Connection Diagram

30109009

Top View

7-Lead TO-PMOD

Ordering Information

Order Number

Package Type

NSC Package Drawing

Supplied As

LMZ12003TZ-ADJ

TO-PMOD-7

TZA07A

250 Units on Tape and Reel

LMZ12003TZX-ADJ

TO-PMOD-7

TZA07A

500 Units on Tape and Reel

LMZ12003TZE-ADJ

TO-PMOD-7

TZA07A

45 Units in a Rail

Pin Descriptions

Pin

Name

Description

1

VIN

Supply input — Nominal operating range is 4.5V to 20V . A small amount of internal capacitance is contained within

the package assembly. Additional external input capacitance is required between this pin and exposed pad.

2

RON

On Time Resistor — An external resistor from V

from 25k to 124k ohms.

3

EN

Enable — Input to the precision enable comparator. Rising threshold is 1.18V nominal; 90 mV hysteresis nominal.

Maximum recommended input level is 6.5V.

4

GND

Ground — Reference point for all stated voltages. Must be externally connected to EP.

5

SS

Soft-Start — An internal 8 µA current source charges an external capacitor to produce the soft-start function. This node

is discharged at 200 µA during disable, over-current, thermal shutdown and internal UVLO conditions.

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