LMZ14203DEMO/NOPB National Semiconductor, LMZ14203DEMO/NOPB Datasheet - Page 2
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LMZ14203DEMO/NOPB
Manufacturer Part Number
LMZ14203DEMO/NOPB
Description
BOARD DEV PWR MODULE LMZ14203
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Specifications of LMZ14203DEMO/NOPB
Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
3.3V
Current - Output
3A
Voltage - Input
6 ~ 42 V
Regulator Topology
Buck
Frequency - Switching
Up to 1MHz
Board Type
Fully Populated
Utilized Ic / Part
LMZ14203
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Other names
LMZ14203DEMO
www.national.com
Pin
Simplified Application Schematic
Connection Diagram
Ordering Information
Pin Descriptions
1
2
3
4
5
LMZ14203TZX-ADJ
LMZ14203TZE-ADJ
LMZ14203TZ-ADJ
Name Description
Order Number
RON
GND
VIN
EN
SS
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.
On Time Resistor — An external resistor from V
from 25k to 124k ohms.
Enable — Input to the precision enable comparator. Rising threshold is 1.18V nominal; 90 mV hysteresis nominal.
Maximum recommended input level is 6.5V.
Ground — Reference point for all stated voltages. Must be externally connected to EP.
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.
Package Type
TO-PMOD-7
TO-PMOD-7
TO-PMOD-7
7-Lead TO-PMOD
Top View
IN
2
to this pin sets the on-time of the application. Typical values range
NSC Package Drawing
TZA07A
TZA07A
TZA07A
30107002
250 Units on Tape and Reel
500 Units on Tape and Reel
45 Units in a Rail
Supplied As
30107001