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LM20154

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具有 SYNCOUT 的 4A、1MHz 同步降壓穩(wěn)壓器

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功能與比較器件相似
TPS62810-Q1 正在供貨 采用 2mm x 3mm 可濕性側(cè)面 QFN 封裝的汽車類 2.75V 至 6V、4A 降壓轉(zhuǎn)換器 Next generation 4-A buck with higher efficiency, lower EMI and a smaller solution size.

產(chǎn)品詳情

Rating Catalog Topology Buck Iout (max) (A) 4 Vin (max) (V) 5.5 Vin (min) (V) 2.95 Vout (max) (V) 5 Vout (min) (V) 0.8 Features Enable, Phase Interleaving, Power good, Synchronous Rectification, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0035 Duty cycle (max) (%) 85
Rating Catalog Topology Buck Iout (max) (A) 4 Vin (max) (V) 5.5 Vin (min) (V) 2.95 Vout (max) (V) 5 Vout (min) (V) 0.8 Features Enable, Phase Interleaving, Power good, Synchronous Rectification, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0035 Duty cycle (max) (%) 85
HTSSOP (PWP) 16 32 mm2 5 x 6.4
  • LM20154-Q1 is AEC-Q100 Qualified and Manufactured on an Automotive Grade Flow
  • Input Voltage Range 2.95V to 5.5V
  • Accurate Current Limit Minimizes Inductor Size
  • 96% Peak Efficiency at 1.0 MHz Switching Frequency
  • Frequency Synchronization Output
  • 32 m? Integrated FET Switches
  • Starts up into Pre-Biased Loads
  • Output Voltage Tracking
  • Peak Current Mode Control
  • Adjustable Output Voltage Down to 0.8V
  • Adjustable Soft-Start with External Capacitor
  • Precision Enable Pin with Hysteresis
  • Integrated OVP, UVLO, Power Good and Thermal Shutdown
  • HTSSOP Exposed Pad Package

All trademarks are the property of their respective owners.

  • LM20154-Q1 is AEC-Q100 Qualified and Manufactured on an Automotive Grade Flow
  • Input Voltage Range 2.95V to 5.5V
  • Accurate Current Limit Minimizes Inductor Size
  • 96% Peak Efficiency at 1.0 MHz Switching Frequency
  • Frequency Synchronization Output
  • 32 m? Integrated FET Switches
  • Starts up into Pre-Biased Loads
  • Output Voltage Tracking
  • Peak Current Mode Control
  • Adjustable Output Voltage Down to 0.8V
  • Adjustable Soft-Start with External Capacitor
  • Precision Enable Pin with Hysteresis
  • Integrated OVP, UVLO, Power Good and Thermal Shutdown
  • HTSSOP Exposed Pad Package

All trademarks are the property of their respective owners.

The LM20154 is a full featured 1 MHz synchronous buck regulator capable of delivering up to 4A of continuous output current. The current mode control loop can be compensated to be stable with virtually any type of output capacitor. For most cases, compensating the device only requires two external components, providing maximum flexibility and ease of use. The device is optimized to work over the input voltage range of 2.95V to 5.5V making it suited for a wide variety of low voltage systems.

The device features internal over voltage protection (OVP) and over current protection (OCP) circuits for increased system reliability. A precision enable pin and integrated UVLO allows the turn on of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable Soft-Start circuit. Fault detection and supply sequencing is possible with the integrated power good circuit.

The LM20154 features an open drain SYNCOUT pin which provides an external clock that matches the switching frequency of the device but is shifted by 180 degrees.

The LM20154 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track a higher voltage rail using the SS/TRK pin. If the output of the LM20154 is pre-biased at startup it will not sink current to pull the output low until the internal soft-start ramp exceeds the voltage at the feedback pin.

The LM20154 is offered in an exposed pad 16-pin HTSSOP package that can be soldered to the PCB, eliminating the need for bulky heatsinks.

The LM20154 is a full featured 1 MHz synchronous buck regulator capable of delivering up to 4A of continuous output current. The current mode control loop can be compensated to be stable with virtually any type of output capacitor. For most cases, compensating the device only requires two external components, providing maximum flexibility and ease of use. The device is optimized to work over the input voltage range of 2.95V to 5.5V making it suited for a wide variety of low voltage systems.

The device features internal over voltage protection (OVP) and over current protection (OCP) circuits for increased system reliability. A precision enable pin and integrated UVLO allows the turn on of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable Soft-Start circuit. Fault detection and supply sequencing is possible with the integrated power good circuit.

The LM20154 features an open drain SYNCOUT pin which provides an external clock that matches the switching frequency of the device but is shifted by 180 degrees.

The LM20154 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track a higher voltage rail using the SS/TRK pin. If the output of the LM20154 is pre-biased at startup it will not sink current to pull the output low until the internal soft-start ramp exceeds the voltage at the feedback pin.

The LM20154 is offered in an exposed pad 16-pin HTSSOP package that can be soldered to the PCB, eliminating the need for bulky heatsinks.
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頂層文檔 類型 標(biāo)題 格式選項(xiàng) 下載最新的英語(yǔ)版本 日期
* 數(shù)據(jù)表 LM20154/LM20154Q 4A, 1MHz Synchronous Buck Regulator with SYNCOUT 數(shù)據(jù)表 (Rev. G) 2013年 3月 27日
選擇指南 電源管理指南 2018 (Rev. K) 2018年 7月 31日
選擇指南 電源管理指南 2018 (Rev. R) 2018年 6月 25日
技術(shù)文章 Thinking beyond the buck controller for high-output power supplies PDF | HTML 2016年 5月 27日
應(yīng)用手冊(cè) AN-2077 LM20k POL Module (Rev. A) 2013年 5月 3日
應(yīng)用手冊(cè) Powring FPGAs Using LM201xx PowerWise Synchronous Buck Regulators 2007年 10月 29日

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LM20154DESIGN-CALC — LM20154 設(shè)計(jì)電子表格

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HTSSOP (PWP) 16 Ultra Librarian

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