LMZ14201EXTTZX

1A SIMPLE SWITCHER® Power Module with 42V Maximum Input Voltage for Military and Rugged Applications

Power Module

The LMZ14201EXTTZX is a power module from Texas Instruments. 1A SIMPLE SWITCHER® Power Module with 42V Maximum Input Voltage for Military and Rugged Applications. View the full LMZ14201EXTTZX datasheet below including electrical characteristics, absolute maximum ratings.

Manufacturer

Texas Instruments

Overview

Part: LMZ14201EXT, Texas Instruments

Type: Synchronous Buck Converter Power Module

Description: A 6–42 V input, 1 A output synchronous buck converter power module with an adjustable 0.8–6 V output voltage range and up to 92% peak efficiency.

Operating Conditions:

Supply voltage: 6V to 42V
Operating temperature: -55 to 125 °C (Junction Temperature)
Output voltage range: 0.8V to 6V
Max output current: 1A

Absolute Maximum Ratings:

Max supply voltage: 43.5V (VIN, RON to GND)
Max continuous current: 1A (Output current)
Max junction/storage temperature: 150 °C

Key Specs:

EN threshold trip point (VEN rising): 1.10 V min, 1.18 V typ, 1.26 V max
SS source current (ISS): 4.9 μA min, 8 μA typ, 11 μA max (VSS = 0V)
Current limit threshold (ICL): 1.4 A min, 1.95 A typ, 3.

Features

-55°C to 125°C junction temperature range
Integrated shielded inductor
Simple PCB layout
Flexible startup sequencing using external soft-start and precision enable
Protection against inrush currents and faults such as input UVLO and output short circuit
Single exposed pad and standard pinout for easy mounting and manufacturing
Fast transient response for powering FPGAs and ASICs
Low output voltage ripple
Pin-to-pin compatible family: LMZ14203EXT/2EXT/1EXT (42V max 3A, 2A, 1A) LMZ14203/2/1 (42V max 3A, 2A, 1A) LMZ12003/2/1 (20V max 3A, 2A, 1A)
Fully enabled for Webench® Power Designer

Applications

Easy To Use 7 Pin Package

30117686

TO-PMOD 7 Pin Package 10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in) θJA = 20°C/W, θJC = 1.9°C/W RoHS Compliant

Electrical Specifications

6W maximum total output power
Up to 1A output current
Input voltage range 6V to 42V
Output voltage range 0.8V to 6V
Efficiency up to 90%

Key Features

-55°C to 125°C junction temperature range
Integrated shielded inductor
Simple PCB layout
Flexible startup sequencing using external soft-start and precision enable
Protection against inrush currents and faults such as input UVLO and output short circuit
Single exposed pad and standard pinout for easy mounting and manufacturing
Fast transient response for powering FPGAs and ASICs
Low output voltage ripple
Pin-to-pin compatible family: LMZ14203EXT/2EXT/1EXT (42V max 3A, 2A, 1A) LMZ14203/2/1 (42V max 3A, 2A, 1A) LMZ12003/2/1 (20V max 3A, 2A, 1A)
Fully enabled for Webench® Power Designer

Pin Configuration

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 VIN to this pin sets the on-time of the application. Typical values range 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.
6	FB	Feedback — Internally connected to the regulation, over-voltage, and short-circuit comparators. The regulation reference point is 0.8V at this input pin. Connected the feedback resistor divider between the output and ground to set the output voltage.
7	VOUT	Output Voltage — Output from the internal inductor. Connect the output capacitor between this pin and exposed pad.
EP	EP	Exposed Pad — Internally connected to pin 4. Used to dissipate heat from the package during operation. Must be electrically connected to pin 4 external to the package.

Simplified Application Schematic

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications.

VIN, RON to GND -0.3V to 43.5V EN, FB, SS to GND -0.3V to 7V Junction Temperature 150°C Storage Temperature Range -65°C to 150°C ESD Susceptibility(Note 2) ± 2 kV Peak Reflow Case Temperature (30 sec) 245°C

For soldering specifications, refer to the following document: www.ti.com/lit/snoa549c

Electrical Characteristics

6W maximum total output power
Up to 1A output current
Input voltage range 6V to 42V
Output voltage range 0.8V to 6V
Efficiency up to 90%

Absolute Maximum Ratings

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications.

VIN, RON to GND -0.3V to 43.5V EN, FB, SS to GND -0.3V to 7V Junction Temperature 150°C Storage Temperature Range -65°C to 150°C ESD Susceptibility(Note 2) ± 2 kV Peak Reflow Case Temperature (30 sec) 245°C

For soldering specifications, refer to the following document: www.ti.com/lit/snoa549c

Thermal Information

Typical Application

Related Variants

The following components are covered by the same datasheet.

Part Number	Manufacturer	Package
LMZ14201	Texas Instruments	TO-PMOD
LMZ14201EXT	Texas Instruments	—
LMZ14201EXTTZ	Texas Instruments	—
LMZ14201EXTTZE	Texas Instruments	—

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