전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

LM20144

활성

2.95~5.5V, 4A, 전류 모드 동기 벅 레귤레이터(주파수 조정 가능)

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TPS62810-Q1 활성 2mm x 3mm 습식 플랭크 QFN 패키지로 제공되는 오토모티브 2.75V ~ 6V, 4A 스텝다운 컨버터 Improved performance: Fixed-frequency, spread-spectrum in smaller 2-mm x 3-mm QFN with wettable flanks.

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 2.95 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1500 Features Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 5 Iq (typ) (µA) 3500 Duty cycle (max) (%) 85
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 2.95 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1500 Features Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 5 Iq (typ) (µA) 3500 Duty cycle (max) (%) 85
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • Available in AEC-Q100 Temperature Grade 1
  • Input Voltage Range 2.95V to 5.5V
  • Accurate Current Limit Minimizes Inductor Size
  • 97% Peak Efficiency
  • Adjustable Switching Frequency (500 kHz - 1.5 MHz)
  • 32 mΩ 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 16-Pin Exposed Pad Package

All trademarks are the property of their respective owners.

  • Available in AEC-Q100 Temperature Grade 1
  • Input Voltage Range 2.95V to 5.5V
  • Accurate Current Limit Minimizes Inductor Size
  • 97% Peak Efficiency
  • Adjustable Switching Frequency (500 kHz - 1.5 MHz)
  • 32 mΩ 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 16-Pin Exposed Pad Package

All trademarks are the property of their respective owners.

The LM20144 is a full featured adjustable frequency 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 LM20144 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 LM20144 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 frequency of this device can be adjusted from 500 kHz to 1.5 MHz by connecting an external resistor from the RT pin to ground.

The LM20144 is offered in a 16-pin HTSSOP package with an exposed pad that can be soldered to the PCB, eliminating the need for bulky heatsinks.

The LM20144 is a full featured adjustable frequency 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 LM20144 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 LM20144 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 frequency of this device can be adjusted from 500 kHz to 1.5 MHz by connecting an external resistor from the RT pin to ground.

The LM20144 is offered in a 16-pin HTSSOP package with an exposed pad that can be soldered to the PCB, eliminating the need for bulky heatsinks.

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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
5개 모두 보기
유형 직함 날짜
* Data sheet PowerWise Adj Freq Synch Buck Reg datasheet (Rev. G) 2013/03/27
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
EVM User's guide AN-1692 LM20144 Evaluation Board (Rev. B) 2013/05/05
Application note AN-1751 4A LM20k Reference Designs (Rev. A) 2013/05/03
Application note AN-2077 LM20k POL Module (Rev. A) 2013/05/03

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

계산 툴

LM20144DESIGN-CALC — LM20144 설계 스프레드시트

패키지 CAD 기호, 풋프린트 및 3D 모델
HTSSOP (PWP) 16 Ultra Librarian

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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