LM2776
- 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 TIs 6-pin SOT-23 to maintain a small form factor.
기술 자료
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
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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 (...)
LM2776 Unencrypted PSpice Transient Model Package (Rev. A)
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패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
SOT-23 (DBV) | 6 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치