홈 전원 관리 AC/DC & DC/DC converters (integrated FET)
홈
전원 관리
AC/DC & DC/DC converters (integrated FET)

LM3370

활성

동적 전압 스케일링 기능 지원 듀얼 동기 스텝다운 DC-DC 컨버터

지금 주문
데이터시트

LM3370

활성
데이터시트 지금 주문

제품 상세 정보

Iout (max) (A) 0.6 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 2400 Features Adaptive/Dynamic Voltage Scaling, Enable, I2C/PMBus, Light Load Efficiency, Light load efficiency, Spread Spectrum, Spread Spectrum Clocking (SSC), Spread spectrum clocking, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.0006
Iout (max) (A) 0.6 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 2400 Features Adaptive/Dynamic Voltage Scaling, Enable, I2C/PMBus, Light Load Efficiency, Light load efficiency, Spread Spectrum, Spread Spectrum Clocking (SSC), Spread spectrum clocking, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.0006
DSBGA (YZR) 20 6.1875 mm² 2.75 x 2.25 WSON (NHR) 16 20 mm² 5 x 4
  • I2C-compatible interface
    • VOUT1 = 1V to 2V in 50 mV Steps
    • VOUT2 = 1.8V to 3.3V in 100 mV Steps
    • Automatic PFM/PWM Mode Switching and Forced PWM Mode for Low Noise Operation
    • Spread Spectrum Capability Using I2C
  • 600mA Load Per Channel
  • 2MHz PWM Fixed Switching Frequency (Typ.)
  • The Bucks Operate 180° Out-of-Phase Timing Offset for Noise and Input Surge Current Abatement
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • Power-on-Reset Function for Both Outputs
  • 2.7V ≤ VIN ≤ 5.5V
  • Operates from a Single Li-Ion Cell or 3 Cell NiMH/NiCd Batteries and 3.3V/5.5V Fixed Rails
  • 2.2µH Inductor, 4.7µF Input and 10µF Output Capacitor Per Channel
  • 16-lead WSON Package (4 mm x 5 mm x 0.8 mm)
  • 20-Bump DSBGA Package (3.0 mm x 2.0 mm x 0.6 mm)

All trademarks are the property of their respective owners.

  • I2C-compatible interface
    • VOUT1 = 1V to 2V in 50 mV Steps
    • VOUT2 = 1.8V to 3.3V in 100 mV Steps
    • Automatic PFM/PWM Mode Switching and Forced PWM Mode for Low Noise Operation
    • Spread Spectrum Capability Using I2C
  • 600mA Load Per Channel
  • 2MHz PWM Fixed Switching Frequency (Typ.)
  • The Bucks Operate 180° Out-of-Phase Timing Offset for Noise and Input Surge Current Abatement
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • Power-on-Reset Function for Both Outputs
  • 2.7V ≤ VIN ≤ 5.5V
  • Operates from a Single Li-Ion Cell or 3 Cell NiMH/NiCd Batteries and 3.3V/5.5V Fixed Rails
  • 2.2µH Inductor, 4.7µF Input and 10µF Output Capacitor Per Channel
  • 16-lead WSON Package (4 mm x 5 mm x 0.8 mm)
  • 20-Bump DSBGA Package (3.0 mm x 2.0 mm x 0.6 mm)

All trademarks are the property of their respective owners.

The LM3370 is a dual step-down DC-DC converter optimized for powering ultra-low voltage circuits from a single Li-Ion battery and input rail ranging from 2.7V to 5.5V. It provides two outputs with 600mA load per channel. The output voltage range varies from 1V to 3.3V and can be dynamically controlled using the I2C-compatible interface. This dynamic voltage scaling function allows processors to achieve maximum performance at the lowest power level. The I2C-compatible interface can also be used to control auto PFM-PWM/PWM mode selection and other performance enhancing features.

The LM3370 offers superior features and performance for portable systems with complex power management requirements. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system efficiency. Internal synchronous rectification enhances the converter efficiency without the use of further external devices.

There is a power-on-reset function that monitors the level of the output voltage to avoid unexpected power losses. The independent enable pin for each output allows for simple and effective power sequencing.

LM3370 is available in a 4mm by 5mm 16-lead non-pullback WSON and a 20-bump DSBGA, 3.0mm x 2.0mm x 0.6mm, package. A high switching frequency—2 MHz (typ)—allows use of tiny surface-mount components including a 2.2µH inductor.

Default fixed voltages for the 2 output voltages combination can be customized to fit system requirements by contacting Texas Instruments.

The LM3370 is a dual step-down DC-DC converter optimized for powering ultra-low voltage circuits from a single Li-Ion battery and input rail ranging from 2.7V to 5.5V. It provides two outputs with 600mA load per channel. The output voltage range varies from 1V to 3.3V and can be dynamically controlled using the I2C-compatible interface. This dynamic voltage scaling function allows processors to achieve maximum performance at the lowest power level. The I2C-compatible interface can also be used to control auto PFM-PWM/PWM mode selection and other performance enhancing features.

The LM3370 offers superior features and performance for portable systems with complex power management requirements. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system efficiency. Internal synchronous rectification enhances the converter efficiency without the use of further external devices.

There is a power-on-reset function that monitors the level of the output voltage to avoid unexpected power losses. The independent enable pin for each output allows for simple and effective power sequencing.

LM3370 is available in a 4mm by 5mm 16-lead non-pullback WSON and a 20-bump DSBGA, 3.0mm x 2.0mm x 0.6mm, package. A high switching frequency—2 MHz (typ)—allows use of tiny surface-mount components including a 2.2µH inductor.

Default fixed voltages for the 2 output voltages combination can be customized to fit system requirements by contacting Texas Instruments.
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관심 가지실만한 유사 제품

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다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
신규 TPS62442 활성 QFN 패키지의 2.75V~6V, 듀얼 2A 또는 3A 및 1A 스텝다운 컨버터 Smaller solution size and higher output current up to 3 A

기술 문서

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모두 보기6
유형 직함 날짜
* Data sheet LM3370 Dual Synch Step-Down DC-DC Converter w/Dyn Volt Scaling Func datasheet (Rev. N) 2013/05/02
Application note Enhancing Bit-Flip Recovery and PMU Design For Defense/Industrial Applications 2014/08/14
EVM User's guide AN-1428 LM3370 Evaluation Board (Rev. D) 2013/04/30
User guide AN-1840 USB I 2 C Interface Board Reference Manual (Rev. A) 2013/04/30
Application note Advanced Topics in Powering FPGAs 2007/03/22
Application note Implementing Single-Chip FPGA Power Solutions 2007/03/21

설계 및 개발

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패키지 핀 다운로드
DSBGA (YZR) 20 옵션 보기
WSON (NHR) 16 옵션 보기
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

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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