LM2796
- Drives up to 7 LEDs with up to 20mA Each
- LEDs Controlled in 2 Distinct Groups, for Backlighting 2 Displays (Main LCD and Sub-LCD)
- Excellent Current and Brightness Matching
- High-Efficiency 3/2x Charge Pump
- Extended Li-Ion Input: 2.7V to 5.5V
- PWM Brightness Control: 100Hz - 1kHz
- 18-bump Thin DSBGA Package: (2.1mm x 2.4mm x 0.6mm)
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The LM2796 is a charge-pump based white-LED driver that is ideal for mobile phone display backlighting. It can drive up to 7 LEDs in parallel with up to 20mA through each LED. Regulated internal current sources deliver excellent current and brightness matching in all LEDs. The LED-driver current sources are split into two independently controlled groups. The primary group (4 LEDs) can be used to backlight the main phone display. The second group (3 LEDs) can be used to backlight a secondary display or to provide other lighting features (keypad LEDs, for example). Brightness of the two groups can be adjusted independently with pulse-width modulated (PWM) digital signals.
The LM2796 works off an extended Li-Ion input voltage range (2.7V to 5.5V). Voltage boost is achieved with a high-efficiency 3/2×-gain charge pump.
The LM2796 is available in TI’s chip-scale 18-bump DSBGA package.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LM2796 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost datasheet (Rev. A) | 2013/05/02 | |
White paper | Common LED Functions and LED Driver Design Considerations | 2020/09/21 | ||
EVM User's guide | AN-1321 LM2796 Evaluation Board (Rev. A) | 2013/04/30 |
설계 및 개발
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LM2796TLEV — 듀얼 디스플레이 백색 LED 드라이버, 2개의 스위치 커패시터 부스트 3개 포함
The LM2796 is a charge-pump based white-LED driver that is ideal for mobile phone display backlighting.
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패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
DSBGA (YZR) | 18 | 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