홈 전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)
홈
전원 관리
AC/DC 및 DC/DC 컨버터(통합 FET)

LM2770

활성

고효율 스위치드 커패시터 스텝다운 DC/DC 레귤레이터(대기 모드 지원)

지금 주문
데이터 시트

LM2770

활성
데이터 시트 지금 주문

제품 상세 정보

Rating Catalog Operating temperature range (°C) -30 to 105 Type Charge pump Iout (max) (A) 0.25 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 475 Switching frequency (max) (kHz) 925 Features Dynamic Voltage Scaling, Regulated Vout (min) (V) 1.2 Vout (max) (V) 1.575 Iq (typ) (µA) 55
Rating Catalog Operating temperature range (°C) -30 to 105 Type Charge pump Iout (max) (A) 0.25 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 475 Switching frequency (max) (kHz) 925 Features Dynamic Voltage Scaling, Regulated Vout (min) (V) 1.2 Vout (max) (V) 1.575 Iq (typ) (µA) 55
WSON (DSC) 10 9 mm² 3 x 3
  • High Efficiency Multi-Gain Architecture: Peak Power Efficiency >85%
  • Output Voltage Pairs: 1.2V/1.5V and 1.2V/1.575V
  • Dynamic Output Voltage Selection
  • ±3% Output Voltage Accuracy
  • Output Currents up to 250mA
  • 2.7V to 5.5V Input Range
  • Low-Supply-Current Sleep Mode
  • 55µA Quiescent Supply Current in Full-Power Mode
  • Soft-Start
  • Short-Circuit Protection in Full-Power Mode
  • Current-Limit Protection in Sleep Mode
  • WSON-10 Package (3mm × 3mm × 0.8mm)

All trademarks are the property of their respective owners.

  • High Efficiency Multi-Gain Architecture: Peak Power Efficiency >85%
  • Output Voltage Pairs: 1.2V/1.5V and 1.2V/1.575V
  • Dynamic Output Voltage Selection
  • ±3% Output Voltage Accuracy
  • Output Currents up to 250mA
  • 2.7V to 5.5V Input Range
  • Low-Supply-Current Sleep Mode
  • 55µA Quiescent Supply Current in Full-Power Mode
  • Soft-Start
  • Short-Circuit Protection in Full-Power Mode
  • Current-Limit Protection in Sleep Mode
  • WSON-10 Package (3mm × 3mm × 0.8mm)

All trademarks are the property of their respective owners.

The LM2770 is a switched capacitor step-down regulator that is ideal for powering low-voltage applications in portable systems. The LM2770 can supply load currents up to 250mA and operates over an input voltage range of 2.7V to 5.5V. This makes the LM2770 a great choice for systems powered by 1-cell Li-Ion batteries and chargers. The output voltage of the LM2770 can be dynamically switched between two output levels with a logic input pin. Output voltage pairs currently available include 1.2V/1.5V and 1.2V/1.575V. Other pairs of voltage options can be developed upon request.

LM2770 efficiency is superior to both fixed-gain switched capacitor buck regulators and low-dropout linear regulators (LDO's). Multiple fractional gains maximize power efficiency over the entire input voltage and output current ranges. The LM2770 can also be switched into a low-power sleep mode when load currents are light (≤ 20mA). In sleep mode, the charge pump is off, and the output is driven with a low-noise, low-power linear regulator.

Soft-start, short-circuit protection, current-limit protection, and thermal-shutdown protection are also included. The LM2770 is available in TI’s small 10-pin Leadless Leadframe Package (WSON-10).

The LM2770 is a switched capacitor step-down regulator that is ideal for powering low-voltage applications in portable systems. The LM2770 can supply load currents up to 250mA and operates over an input voltage range of 2.7V to 5.5V. This makes the LM2770 a great choice for systems powered by 1-cell Li-Ion batteries and chargers. The output voltage of the LM2770 can be dynamically switched between two output levels with a logic input pin. Output voltage pairs currently available include 1.2V/1.5V and 1.2V/1.575V. Other pairs of voltage options can be developed upon request.

LM2770 efficiency is superior to both fixed-gain switched capacitor buck regulators and low-dropout linear regulators (LDO's). Multiple fractional gains maximize power efficiency over the entire input voltage and output current ranges. The LM2770 can also be switched into a low-power sleep mode when load currents are light (≤ 20mA). In sleep mode, the charge pump is off, and the output is driven with a low-noise, low-power linear regulator.

Soft-start, short-circuit protection, current-limit protection, and thermal-shutdown protection are also included. The LM2770 is available in TI’s small 10-pin Leadless Leadframe Package (WSON-10).
filter 기타 AC/DC 및 DC/DC 컨버터(통합 FET) 찾기
다운로드 스크립트와 함께 비디오 보기 동영상

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
2개 모두 보기
유형 직함 날짜
* Data sheet LM2770 High Efficiency Switched Cap Step-Down DC/DC Regulator w/Sleep Mode datasheet (Rev. E) 2013/05/01
Application note Power Management Design for Applications Processors 2007/03/22

설계 및 개발

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

패키지 핀 CAD 기호, 풋프린트 및 3D 모델
WSON (DSC) 10 Ultra Librarian
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

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

포럼 주제 모두 보기(영문)

콘텐츠는 TI 및 커뮤니티 기고자에 의해 "있는 그대로" 제공되며 TI의 사양으로 간주되지 않습니다. 사용 약관을 참조하십시오.

품질, 패키징, TI에서 주문하는 데 대한 질문이 있다면 TI 지원을 방문하세요. ​​​​​​​​​​​​​​

동영상