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Product details

Parameters

Iout (Max) (A) 1 Vin (Min) (V) 4.5 Vin (Max) (V) 20 Vout (Min) (V) 0.8 Vout (Max) (V) 6 Soft start Adjustable Features EMI Tested, Enable, Tracking Operating temperature range (C) -55 to 125 Iq (Typ) (mA) 1 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1000 Switching frequency (Min) (kHz) 200 Switching frequency (Typ) (kHz) 800 Duty cycle (Max) (%) 85 Type Module Topology Buck, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

TO-PMOD (NDW) 7 140 mm² 10.16 x 13.77 open-in-new Find other Buck modules (integrated inductor)

Features

  • Junction Temperature Range –55°C to 125°C
  • Integrated Shielded Inductor
  • Simple PCB Layout
  • Flexible Startup Sequencing Using External Soft-
    Start Capacitor 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 FPGAs and ASICs
  • Low Output Voltage Ripple
  • Pin-to-Pin Compatible With Family Devices:
    • LMZ14203EXT/2EXT/1EXT (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 WEBENCH® Power Designer Enabled
  • Performance Benefits
    • Low Radiated Emissions / High Radiated
      Immunity
    • Passes Vibration Standard MIL-STD-883
      Method 2007.2 Condition A JESD22–B103B
      Condition 1
    • Passes Drop standard MIL-STD-883 Method
      2002.3 Condition B JESD22–B110 Condition B
  • Electrical Specifications
    • 6-W Maximum Total Power Output
    • Up to 1-A Output Current
    • Input Voltage Range 4.5 V to 20 V
    • Output Voltage Range 0.8 V to 6 V
    • Efficiency up to 92%
open-in-new Find other Buck modules (integrated inductor)

Description

The LMZ12001EXT SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 1-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ12001EXT is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ12001EXT can accept an input voltage rail between 4.5 V and 20 V, and can deliver an adjustable and highly accurate output voltage as low as 0.8 V. The LMZ12001EXT only requires three external resistors and four external capacitors to complete the power solution. The LMZ12001EXT 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 the device allows start-up into a prebiased output. A single resistor adjusts the switching frequency up to 1 MHz.

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

Technical documentation

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 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 radiated (...)

Features
  • Integrated shielded inductor (inside module)
  • VIN = 4.5V to 20V
  • Precision enable UVLO - 4.5V
  • 1.8V output (output voltage is adjustable by changing 1 or 2 resistors)
  • Operates at full load up to 80°C ambient at 12V input
  • Efficiency
    • Up to 92% (LMZ14203/LMZ12003)
  • Thermal performance
    • θJA = 20°C/W
    • θJC = 1.9°C/W
  • Uses 0805 (...)

Design tools & simulation

SIMULATION MODELS Download
SNVM157.ZIP (253 KB) - PSpice Model
SIMULATION MODELS Download
SNVM748.ZIP (3 KB) - PSpice Model
CALCULATION TOOLS Download
LMZ1x/EXT Thermal Resistance Estimate
LMZ1X-LMZXEXTDESIGN-CALC

CAD/CAE symbols

Package Pins Download
TO-PMOD (NDW) 7 View options

Ordering & quality

Support & training

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Videos

Choosing Between a DC/DC Power Module and a Discrete Switching Regulator

When should I select a power module instead of a converter as my step-down DC/DC power supply? Learn the pros and cons of each approach in this brief video.

Posted: 29-Jan-2016
Duration: 06:26

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