전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

LM2776

활성

스위치드 커패시터 인버터

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 85 Type Charge pump, Converter Iout (max) (A) 0.2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1700 Switching frequency (max) (kHz) 2300 Features Enable, Light Load Efficiency Mode, Output discharge, Synchronous Rectification, UVLO Fixed, Unregulated Vout (min) (V) -5.5 Vout (max) (V) -2.7 Iq (typ) (µA) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Type Charge pump, Converter Iout (max) (A) 0.2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1700 Switching frequency (max) (kHz) 2300 Features Enable, Light Load Efficiency Mode, Output discharge, Synchronous Rectification, UVLO Fixed, Unregulated Vout (min) (V) -5.5 Vout (max) (V) -2.7 Iq (typ) (µA) 100
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Input Voltage: 2.7 V to 5.5 V
  • 200-mA Output Current
  • Inverts Input Supply Voltage
  • Low-Current PFM Mode Operation
  • 2-MHz Switching Frequency
  • Greater than 90% Efficiency
  • Current Limit and Thermal Protection
  • No Inductors
  • Input Voltage: 2.7 V to 5.5 V
  • 200-mA Output Current
  • Inverts Input Supply Voltage
  • Low-Current PFM Mode Operation
  • 2-MHz Switching Frequency
  • Greater than 90% Efficiency
  • Current Limit and Thermal Protection
  • No Inductors

The LM2776 CMOS charge-pump voltage converter inverts a positive voltage in the range from 2.7 V to 5.5 V to the corresponding negative voltage. The LM2776 uses three low-cost capacitors to provide 200 mA of output current without the cost, size, and electromagnetic interference (EMI) related to inductor-based converters.

With an operating current of only 100 µA and operating efficiency greater than 90% at most loads, the LM2776 provides ideal performance for battery-powered systems requiring a high power negative power supply.

The LM2776 has been placed in TI’s 6-pin SOT-23 to maintain a small form factor.

The LM2776 CMOS charge-pump voltage converter inverts a positive voltage in the range from 2.7 V to 5.5 V to the corresponding negative voltage. The LM2776 uses three low-cost capacitors to provide 200 mA of output current without the cost, size, and electromagnetic interference (EMI) related to inductor-based converters.

With an operating current of only 100 µA and operating efficiency greater than 90% at most loads, the LM2776 provides ideal performance for battery-powered systems requiring a high power negative power supply.

The LM2776 has been placed in TI’s 6-pin SOT-23 to maintain a small form factor.

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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
7개 모두 보기
유형 직함 날짜
* Data sheet LM2776 Switched Capacitor Inverter datasheet (Rev. B) PDF | HTML 2017/02/07
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 2022/05/23
Technical article Low-noise charge pumps make it easy to create negative voltages PDF | HTML 2017/08/30
Technical article Pump it up quietly PDF | HTML 2016/02/19
Technical article Pump it up with charge pumps – Part 1 PDF | HTML 2016/02/01
White paper The Forgotten Converter 2015/06/15
User guide Using the LM2776 Evaluation Module 2015/05/19

설계 및 개발

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

평가 보드

LM2776EVM — LM2776 충전 펌프 인버터 평가 모듈

The LM2776EVM aids in evaluation of the LM2776 Charge Pump Inverter.  The 2 MHz switched capacitor  boost provides up to 200mA of output current utilizing 3 small external capacitors.  With a low current PFM or ECO mode, the LM2776 draws a minimal load from the power supply when the (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM2776 Unencrypted PSpice Transient Model Package (Rev. A)

SNVMAR2A.ZIP (80 KB) - PSpice Model
레퍼런스 디자인

TIDA-00626 — 스퍼 감소를 지원하는 통합 신시사이저를 사용한 9.8GHz RF CW 신호 생성기 레퍼런스 설계

This design is a 9.8-GHz wideband, low-phase noise, integrated continuous wave (CW) RF signal generator with versatile spur reduction technique. The output level can be programmed from -32 dBm to 14.5 dBm in 0.5-dB steps. This signal generator can be used as local oscillator for applications, such (...)
Design guide: PDF
회로도: PDF
레퍼런스 디자인

TIDA-01063 — PCB Rogowski 코일 센서를 사용하는 고정밀 AC 전류 측정 레퍼런스 디자인

TIDA-01063 is a reference design for current sensing using a PCB Rogowski Coil sensor to achieve very good linearity for wide measurement range at very low system BOM cost. PCB Rogowski sensor is advantageous for isolated current measurement due to very high bandwidth of 20 MHz and fast settling (...)
Design guide: PDF
회로도: PDF
패키지 CAD 기호, 풋프린트 및 3D 모델
SOT-23 (DBV) 6 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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