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LMZ34202

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4.5V to 42V, 2A Step-Down Power Module in QFN Package

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Data sheet

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TPSM63603 ACTIVE High-density, 3-V to 36-V input, 1-V to 16-V output, 3-A power module Significantly smaller footprint, lower EMI, higher efficiency, and optional spread spectrum.

LMZ34202

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 105 Topology Buck, Inverting Buck-Boost, Synchronous Buck Type Module Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (min) (V) 2.5 Vout (max) (V) 7.5 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Features EMI Tested, Enable, Frequency synchronization, Light Load Efficiency, Power good, Remote Sense Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 105 Topology Buck, Inverting Buck-Boost, Synchronous Buck Type Module Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (min) (V) 2.5 Vout (max) (V) 7.5 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Features EMI Tested, Enable, Frequency synchronization, Light Load Efficiency, Power good, Remote Sense Duty cycle (max) (%) 90
B3QFN (RVQ) 43 100 mm² 10 x 10
  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • 10 mm × 10 mm × 4.3 mm Package
  • Wide-Output Voltage Adjust (2.5 V to 7.5 V)
  • Adjustable Switching Frequency
    (200 kHz to 1 MHz)
  • Synchronizes to an External Clock
  • Automatic PFM Mode for Light Load Efficiency
  • Adjustable Soft-Start Time
  • Output Voltage Sequencing / Tracking
  • Power Good Output
  • Programmable Undervoltage Lockout (UVLO)
  • Over-Temperature Thermal Shutdown Protection
  • Over-Current Protection (Hiccup Mode)
  • Pre-Bias Output Start-Up
  • Operating Temperature Range: –40°C to 105°C
  • Enhanced Thermal Performance: 14°C/W
  • Meets EN55022 Class B Emissions
    – Integrated Shielded Inductor
  • Create a Custom Design using the LMZ34202 with the WEBENCH® Power Designer
  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • 10 mm × 10 mm × 4.3 mm Package
  • Wide-Output Voltage Adjust (2.5 V to 7.5 V)
  • Adjustable Switching Frequency
    (200 kHz to 1 MHz)
  • Synchronizes to an External Clock
  • Automatic PFM Mode for Light Load Efficiency
  • Adjustable Soft-Start Time
  • Output Voltage Sequencing / Tracking
  • Power Good Output
  • Programmable Undervoltage Lockout (UVLO)
  • Over-Temperature Thermal Shutdown Protection
  • Over-Current Protection (Hiccup Mode)
  • Pre-Bias Output Start-Up
  • Operating Temperature Range: –40°C to 105°C
  • Enhanced Thermal Performance: 14°C/W
  • Meets EN55022 Class B Emissions
    – Integrated Shielded Inductor
  • Create a Custom Design using the LMZ34202 with the WEBENCH® Power Designer

The LMZ34202 power module is an easy-to-use integrated power supply that combines a 2-A DC-DC converter with a shielded inductor and passives into a low profile, QFN package. This total power solution allows as few as three external components while maintaining an ability to adjust key parameters to meet specific design requirements.

The QFN package is easy to solder to a printed circuit board, allows reflow profiles up to 245°C, and has excellent power dissipation capability. The LMZ34202 offers flexibilty with many features and is ideal for powering a wide range of devices and systems.

The LMZ34202 power module is an easy-to-use integrated power supply that combines a 2-A DC-DC converter with a shielded inductor and passives into a low profile, QFN package. This total power solution allows as few as three external components while maintaining an ability to adjust key parameters to meet specific design requirements.

The QFN package is easy to solder to a printed circuit board, allows reflow profiles up to 245°C, and has excellent power dissipation capability. The LMZ34202 offers flexibilty with many features and is ideal for powering a wide range of devices and systems.

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Technical documentation

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* Data sheet LMZ34202 4.5-V to 42-V Input, 2-A Power Module datasheet (Rev. C) PDF | HTML 20 Jun 2018
Application note Soldering Considerations for Power Modules (Rev. C) PDF | HTML 14 Mar 2024
Technical article Powering medical imaging applications with DC/DC buck converters PDF | HTML 24 Nov 2020
White paper Simplify low EMI design with power modules 20 Nov 2017
White paper Benefits and trade-offs of various power-module package options 02 Aug 2017
User guide LMZ34202 Simple Switcher® Power Module Evaluation Module 04 Feb 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LMZ34202EVM — 4.5V to 42V, 2A Step-Down Power Module Evaluation Board

The LMZ34202 evaluation board is configured to evaluate the operation of the LMZ34202 power module. The input voltage range is 4.5V to 42V. The output voltage can be selected from 5 popular voltages (2.5V, 3.3V, 5.0V, 6.0, & 7.5V) using a single jumper. The switching frequency can also be (...)
User guide: PDF
Not available on TI.com
Simulation model

LMZ34202 Non Inverting and Inverting PSpice Transient Model

SNVMAM6.ZIP (149 KB) - PSpice Model
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Reference designs

TIDA-00783 — Space Optimized Wide Vin Triple-Output Power Module Reference Design

The TIDA-00783.1 reference design is a triple output wide Vin power module design. It provides 3.3V, 1.8V and 1.2V output, at 6W total power. The layout is optimized for space constrained applications.
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01352 — 400-W Continuous, Scalable, ±2.5- to ±150-V, Programmable Ultrasound Power Supply Reference Design

The TIDA-01352 enables modular and efficient power scaling capability by providing a solution for digitally programmable power supply for powering ultrasound transmit circuit. The design uses push-pull topology to generate high-voltage (HV) and low- (LV) or MID- voltage power supplies. The HV (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-010011 — High efficiency power supply architecture reference design for protection relay processor module

This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00808 — Space-optimized DC/DC Inverting Power Module Reference Design with Minimal BOM Count

The TIDA-00808 is a simple DC/DC inverting power supply reference design for industrial applications. It takes a wide input voltage between 4.5V and 55V and generates a negative 5V @ 1.75A output with 86% peak efficiency. Since this design is inverting, the maximum output current increases as the (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
B3QFN (RVQ) 43 Ultra Librarian
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