Simplified Application Schematic

30114601

Connection Diagram

30114602

Top View

7-Lead TO-PMOD

Ordering Information

Order Number

Package Type

NSC Package Drawing

Supplied As

LMZ14201TZ-ADJ

TO-PMOD-7

TZA07A

250 Units in Tape and Reel

LMZ14201TZX-ADJ

TO-PMOD-7

TZA07A

500 Units in Tape and Reel

LMZ14201TZE-ADJ

TO-PMOD-7

TXA07A

45 Units in a Rail

Pin Descriptions

Pin

Name

Description

1

VIN

Supply input — Nominal operating range is 6V to 42V . 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.

www.national.com

2