3.5-V to 36-V input, 1-V to 20-V output, 6-A power module


Product details


Iout (Max) (A) 6 Vin (Min) (V) 3.5 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 20 Soft start Adjustable Features EMI Tested, Enable, Frequency Synchronization, Light Load Efficiency, Power Good, Tracking Operating temperature range (C) -40 to 105 Iq (Typ) (uA) 21 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 2200 Switching frequency (Min) (kHz) 350 Duty cycle (Max) (%) 90 Topology Buck, Inverting Buck-Boost, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

B3QFN (RLX) 41 160 mm² 10 x 16 open-in-new Find other Buck modules (integrated inductor)


  • Small Complete Solution Size: < 250 mm2
    • Requires as few as 4 External Components
    • 16 mm × 10 mm × 4 mm QFN Package
  • Supports 5-V, 12-V, 24-V, 28-V Input Rails
    • 1-V to 20-V Output Voltage Range
    • Pin Compatible with 4-A LMZM33604
  • Meets EN55011 Radiated Emissions
  • Configurable as Negative Output Voltage
  • Adjustable Features for Design Flexibility
    • Switching Frequency (350 kHz to 2.2 MHz)
    • Synchronization to an External Clock
    • Selectable Auto Mode or FPWM Mode
      • Auto: Boost Efficiency at Light Loads
      • FPWM: Fixed Frequency Over Entire Load
    • Adjustable Soft Start and Tracking Input
    • Precision Enable to Program System UVLO
  • Protection Features
    • Hiccup Mode Current Limit
    • Overtemperature Protection
    • Power-Good Output
  • Operate in Rugged Environments
    • Up to 50-W Output Power at 85°C, No Airflow
    • Operating Junction Range: –40°C to +125°C
    • Operating Ambient Range: –40°C to +105°C
    • Shock and Vibration Tested to Mil-STD-883D
open-in-new Find other Buck modules (integrated inductor)


The LMZM33606 power module is an easy-to-use integrated power solution that combines a 6-A DC/DC converter with power MOSFETs, a shielded inductor, and passives in a low-profile package. This power solution requires as few as four external components and eliminates the loop compensation and inductor part selection from the design process.

The 16 mm × 10 mm × 4 mm, 41-pin, QFN package is easy to solder onto a printed circuit board and allows a compact, low-profile point-of-load design. The LMZM33606 feature set includes power good, adjustable soft start, tracking, synchronization, programmable UVLO, prebias start-up, selectable auto or FPWM modes, as well as over-current and over-temperature protection. The LMZM33606 can be configured as negative output voltage for inverting applications.

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

Technical documentation

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Type Title Date
* Data sheet LMZM33606 3.5-V to 36-V Input, 1-V to 20-V Output, 6-A Power Module datasheet (Rev. B) May 24, 2019
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) Jul. 26, 2021
Application note Soldering Considerations for Power Modules (Rev. B) May 17, 2021
Application note Practical Thermal Design With DC/DC Power Modules (Rev. A) Nov. 20, 2019
Application note Inverting Application Using the LMZM33606 (Rev. B) May 17, 2019
User guide LMZM33604EVM and LMZM33606EVM User's Guide (Rev. B) Apr. 10, 2019
Application note Output Noise Filtering for DC/DC Power Modules Mar. 05, 2019
White paper Power modules for lab instrumentation Oct. 18, 2018
Technical article How to create a programmable output inverting buck-boost regulator Oct. 17, 2018

Design & development

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Hardware development

document-generic User guide
The LMZM33606 evaluation board is configured to evaluate the operation of the LMZM33606 power module for current up to 6 A. The input voltage range is 3.5 V to 36 V. The output voltage range is 1 V to 20 V. The evaluation board makes it easy to evaluate the LMZM33606 operation.
  • 3.5-V to 36-V Input Voltage Range
  • Up to 6 A of Output Current
  • 1-V to 20-V Output Voltage Range
  • 10 mm x 16 mm QFN package

Design tools & simulation

SNVMBK2A.ZIP (114 KB) - PSpice Model
SNVMBK3A.ZIP (8 KB) - PSpice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
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CAD/CAE symbols

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B3QFN (RLX) 41 View options

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