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LMZ12002EXT

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面向军事和坚固耐用型应用的具有 20V 最大输入电压的 2A SIMPLE SWITCHER 电源模块

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LMZ12002EXT

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产品详情

Rating Catalog Topology Buck, Synchronous Buck Iout (max) (A) 2 Vin (max) (V) 20 Vin (min) (V) 4.5 Vout (max) (V) 6 Vout (min) (V) 0.8 Features EMI Tested, Enable, Tracking Operating temperature range (°C) -55 to 125 Type Module Duty cycle (max) (%) 85 Control mode Constant on-time (COT) Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000
Rating Catalog Topology Buck, Synchronous Buck Iout (max) (A) 2 Vin (max) (V) 20 Vin (min) (V) 4.5 Vout (max) (V) 6 Vout (min) (V) 0.8 Features EMI Tested, Enable, Tracking Operating temperature range (°C) -55 to 125 Type Module Duty cycle (max) (%) 85 Control mode Constant on-time (COT) Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000
TO-PMOD (NDW) 7 139.9032 mm² (10.16 mm × 13.77 mm)
  • Junction Temperature Range –55°C to 125°C
  • Integrated Shielded Inductor
  • Simple PCB Layout
  • Flexible Start-up 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
  • Low Radiated Emissions and 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
    • 12-W Maximum Total Power Output
    • Up to 2-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%
  • Junction Temperature Range –55°C to 125°C
  • Integrated Shielded Inductor
  • Simple PCB Layout
  • Flexible Start-up 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
  • Low Radiated Emissions and 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
    • 12-W Maximum Total Power Output
    • Up to 2-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%

The LMZ12002EXT SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 2-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ12002EXT is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ12002EXT 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 LMZ12002EXT only requires three external resistors and four external capacitors to complete the power solution. The LMZ12002EXT 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.

The LMZ12002EXT SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 2-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ12002EXT is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ12002EXT 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 LMZ12002EXT only requires three external resistors and four external capacitors to complete the power solution. The LMZ12002EXT 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.
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* 数据表 LMZ12002EXT 2-A SIMPLE SWITCHER® Power Module With 20-V Maximum Input Voltage for Demanding Environments and Rugged Applications 数据表 (Rev. G) PDF | HTML 2015-8-31
应用手册 Design Summary LMZ1xxx and LMZ2xxx Power Module Family (Rev. B) 2016-1-20
应用手册 AN-2027 Inverting Application for the LMZ14203 SIMPLE SWITCHER Power Module (Rev. A) 2013-5-6
应用手册 AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013-4-23
应用手册 AN-2078 PCB Layout for Texas Instruments SIMPLE SWITCHER Power Modules (Rev. A) 2013-4-23
应用手册 AN-2052 Texas Instruments SIMPLE SWITCHER Power Modules and EMI (Rev. C) 2013-4-23
应用手册 AN-2026 Effect of PCB Design on Thermal Performance of SIMPLE SWITCHER Modules (Rev. A) 2013-4-23
设计指南 SIMPLE SWITCHER® 易电源 > 设计指南 英语版 2012-12-14
应用手册 Application Note 2020 Thermal Design By Insight, Not Hindsight (cn) 2011-6-13
应用手册 AN-2052 SIMPLE SWITCHER® Power Modules and EMI (cn) 2011-5-5
应用手册 Understanding and Applying Current-Mode Control Theory 2007-8-19
更多文献资料 SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005-7-12
应用手册 AN-643 EMI/RFI Board Design (Rev. B) 2004-5-3

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仿真模型

LMZ12002EXT PSpice Transient Model

SNVM132.ZIP (232 KB) - PSpice 模型
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仿真模型

LMZ12002EXT Unencrypted PSpice Transient Model

SNVM751.ZIP (3 KB) - PSpice 模型
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计算工具

LMZ1X-LMZXEXTDESIGN-CALC — LMZ1x/EXT 热阻估算

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