LMZ34202

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

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Product details

Parameters

Iout (Max) (A) 2 Vin (Min) (V) 4.5 Vin (Max) (V) 42 Vout (Min) (V) 2.5 Vout (Max) (V) 7.5 Soft start Adjustable Features EMI Tested, Enable, Frequency Synchronization, Light Load Efficiency, Power Good, Remote Sense Operating temperature range (C) -40 to 105 Iq (Typ) (mA) 0.6 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1000 Switching frequency (Min) (kHz) 200 Switching frequency (Typ) (kHz) 500 Duty cycle (Max) (%) 90 Type Module Topology Buck, Inverting Buck-Boost, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

B3QFN (RVQ) 43 100 mm² 10 x 10 open-in-new Find other Buck modules (integrated inductor)

Features

  • 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

All trademarks are the property of their respective owners.

open-in-new Find other Buck modules (integrated inductor)

Description

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.

open-in-new Find other Buck modules (integrated inductor)
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Technical documentation

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Type Title Date
* Datasheet LMZ34202 4.5-V to 42-V Input, 2-A Power Module datasheet (Rev. C) Jun. 20, 2018
Application notes Soldering Considerations for Power Modules Nov. 26, 2018
White papers Simplify low EMI design with power modules Nov. 20, 2017
White papers Benefits and trade-offs of various power-module package options Aug. 02, 2017
Selection guides Innovative DC/DC Power Modules Selection Guide (Rev. A) Mar. 28, 2017
Selection guides TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
User guides LMZ34202 Simple Switcher® Power Module Evaluation Module Feb. 04, 2016

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
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 (...)
Features
  • 4.5V to 42V Input Voltage Range
  • 2.5V, 3.3V, 5.0V, 6.0V and 7.5V Output Voltage Jumper
  • Up to 2A of Output Current

Design tools & simulation

SIMULATION MODELS Download
SNVMAM6.ZIP (149 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
High efficiency power supply architecture reference design for protection relay processor module
TIDA-010011 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
400-W Continuous, Scalable, ±2.5- to ±150-V, Programmable Ultrasound Power Supply Reference Design
TIDA-01352 — 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 rails (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Space Optimized Wide Vin Triple-Output Power Module Reference Design
TIDA-00783 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.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Space-optimized DC/DC Inverting Power Module Reference Design with Minimal BOM Count
TIDA-00808 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
B3QFN (RVQ) 43 View options

Ordering & quality

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