Product details

Iout (Max) (A) 1 Vin (Min) (V) 6 Vin (Max) (V) 42 Vout (Min) (V) 5 Vout (Max) (V) 24 Soft start Adjustable Features EMI Tested, Enable, Tracking Operating temperature range (C) -40 to 125 Iq (Typ) (uA) 1000 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1000 Switching frequency (Min) (kHz) 200 Duty cycle (Max) (%) 92.5 Topology Buck, Inverting Buck-Boost, Synchronous Buck
Iout (Max) (A) 1 Vin (Min) (V) 6 Vin (Max) (V) 42 Vout (Min) (V) 5 Vout (Max) (V) 24 Soft start Adjustable Features EMI Tested, Enable, Tracking Operating temperature range (C) -40 to 125 Iq (Typ) (uA) 1000 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1000 Switching frequency (Min) (kHz) 200 Duty cycle (Max) (%) 92.5 Topology Buck, Inverting Buck-Boost, Synchronous Buck
TO-PMOD (NDW) 7 140 mm² 10.16 x 13.77
  • Integrated shielded inductor
  • Simple PCB layout
  • Flexible start-up sequencing using external soft-start and precision enable
  • Protection against inrush currents
  • Input UVLO and output short circuit protection
  • –40°C to 125°C junction temperature range
  • Single exposed pad and standard pinout for easy mounting and manufacturing
  • Low output voltage ripple
  • Pin-to-pin compatible family:
    • LMZ14203H/2H/1H (42 V maximum 3-A, 2-A, 1-A)
    • LMZ14203/2/1 (42 V maximum 3-A, 2-A, 1-A)
    • LMZ12003/2/1 (20 V maximum 3-A, 2-A, 1-A)
  • Fully enabled for WEBENCH power designer
  • Electrical specifications
    • Up to 1-A output current
    • Input voltage range 6 V to 42 V
    • Output voltage as low as 5 V
    • Efficiency up to 97%
  • Performance benefits
    • High efficiency reduces system heat generation
    • No compensation required
    • Low package thermal resistance
    • Low radiated EMI (EN 55022 class B tested) (1)

(1)EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007.

  • Integrated shielded inductor
  • Simple PCB layout
  • Flexible start-up sequencing using external soft-start and precision enable
  • Protection against inrush currents
  • Input UVLO and output short circuit protection
  • –40°C to 125°C junction temperature range
  • Single exposed pad and standard pinout for easy mounting and manufacturing
  • Low output voltage ripple
  • Pin-to-pin compatible family:
    • LMZ14203H/2H/1H (42 V maximum 3-A, 2-A, 1-A)
    • LMZ14203/2/1 (42 V maximum 3-A, 2-A, 1-A)
    • LMZ12003/2/1 (20 V maximum 3-A, 2-A, 1-A)
  • Fully enabled for WEBENCH power designer
  • Electrical specifications
    • Up to 1-A output current
    • Input voltage range 6 V to 42 V
    • Output voltage as low as 5 V
    • Efficiency up to 97%
  • Performance benefits
    • High efficiency reduces system heat generation
    • No compensation required
    • Low package thermal resistance
    • Low radiated EMI (EN 55022 class B tested) (1)

(1)EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007.

The LMZ14201H SIMPLE SWITCHER power module is an easy-to-use step-down DC-DC solution that can drive up to 1-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ14201H is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ14201H can accept an input voltage rail between 6 V and 42 V and deliver an adjustable and highly accurate output voltage as low as 5 V. The LMZ14201H only requires three external resistors and four external capacitors to complete the power solution. The LMZ14201H is a reliable and robust design with the following protection features: thermal shutdown, input undervoltage lockout, output overvoltage protection, short-circuit protection, output current limit, and allows start-up into a prebiased output. A single resistor adjusts the switching frequency up to 1 MHz.

The LMZ14201H SIMPLE SWITCHER power module is an easy-to-use step-down DC-DC solution that can drive up to 1-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ14201H is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ14201H can accept an input voltage rail between 6 V and 42 V and deliver an adjustable and highly accurate output voltage as low as 5 V. The LMZ14201H only requires three external resistors and four external capacitors to complete the power solution. The LMZ14201H is a reliable and robust design with the following protection features: thermal shutdown, input undervoltage lockout, output overvoltage protection, short-circuit protection, output current limit, and allows start-up into a prebiased output. A single resistor adjusts the switching frequency up to 1 MHz.

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Design & development

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Evaluation board

LMZ14201HEVAL — SIMPLE SWITCHER® Power Module 42Vin, High Output Voltage 3A Eval Board

The SIMPLE SWITCHER® power module evaluation board is optimized for peak performance and increased flexibility. By incorporating additional ceramic and an aluminum filter capacitor, the power module EVAL board demonstrates the low output ripple, fast transient response, and low conducted and (...)

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Simulation model

LMZ14201H Unencrypted PSpice Transient Model Package (Rev. A)

SNVM202A.ZIP (184 KB) - PSpice Model
Simulation model

LMZ14201H Unencrypted PSpice Transient Model

SNVM764.ZIP (4 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Reference designs

TIDA-010055 — Non-isolated power architecture with diagnostics reference design for protection relay modules

This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
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