TPS51225
- Input Voltage Range: 5.5 V to 24 V
- Output Voltages: 5 V and 3.3 V (Adjustable Range ±10%)
- Built-in, 100-mA, 5-V and 3.3-V LDOs
- Clock Output for Charge-Pump
- ±1% Reference Accuracy
- Adaptive On-time D-CAP Mode Control Architecture with 300kHz/355kHz Frequency Setting
- Auto-skip Light Load Operation (TPS51225/C)
- OOA Light Load Operation (TPS51225B)
- Internal 0.8-ms Voltage Servo Soft-Start
- Low-Side RDS(on) Current Sensing Scheme with 4500 ppm/°C Temperature Coefficient
- Built-in Output Discharge Function
- Separate Enable Input for Switchers (TPS51225/B/C)
- Dedicated OC Setting Terminals
- Power Good Indicator
- OVP/UVP/OCP Protection
- Non-latch UVLO/OTP Protection
- 20-Pin, 3 mm × 3 mm, QFN (RUK)
The TPS51225/B/C is a cost-effective, dual-synchronous buck controller targeted for notebook system-power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 260-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter efficiency. The TPS51225/B/C supports high efficiency, fast transient response and provides a combined power-good signal. Adaptive on-time, D-CAP™ control provides convenient and efficient operation. The device operates with supply input voltage ranging from 5.5 V to 24 V and supports output voltages of 5.0 V and 3.3 V. The TPS51225/B/C is available in a 20-pin, 3 mm × 3 mm, QFN package and is specified from –40°C to 85°C.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | Dual Synchronous Step-Down Controller with 5-V and 3.3-V LDOs datasheet (Rev. B) | 2012/09/09 | |
| User guide | TPS51225 Buck Controller Evaluation Module User's Guide (Rev. A) | PDF | HTML | 2022/02/11 | |
| Application note | Mosfet Driver Circuit Design Guide for TPS512xx (Rev. A) | 2019/04/01 | ||
| Application note | Understanding Dead-time Based On TPS51225/275/285 | 2018/08/22 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 |
설계 및 개발
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TPS51225EVM-133 — TPS51225 평가 모듈
TPS51225 TINA-TI Transient Reference Design
TPS51225 Unencrypted PSpice Transient Model Package (Rev. A)
TPS51225B TINA-TI Transient Reference Design
TPS51225B Unencrypted PSpice Transient Model Package (Rev. A)
TPS51225C Unencrypted PSpice Transient Model Package (Rev. A)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WQFN (RUK) | 20 | 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