TPS62690
- 95% Efficiency at 4MHz Operation
- 19µA Quiescent Current
- 4MHz Regulated Frequency Operation
- High Duty-Cycle Operation
- ±2% Total DC Voltage Accuracy
- Load and Line Transient
- Excellent AC Load Regulation
- Low Ripple Light-Load PFM Mode
- ≥40dB VIN PSRR (1kHz to 10kHz)
- Internal Soft Start, 250-µs Start-Up Time
- Integrated Active Power-Down Sequencing (Optional)
- Current Overload and Thermal Shutdown Protection
- Three Surface-Mount External Components Required
(One 2012 MLCC Inductor, Two 0402 Ceramic Capacitors) - Complete Sub 1-mm Component Profile Solution
- Total Solution Size <12 mm2
- Available in a 6-Pin NanoFree (CSP)
The TPS6269x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6269x supports up to 600-mA load current, and allows the use of low cost chip inductor and capacitors.
The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. Different fixed voltage output versions are available from 2.2V to 2.9V.
The TPS6269x operates at a regulated 4-MHz switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range.
The PFM mode extends the battery life by reducing the quiescent current to 19µA (typ) during light load operation. For noise-sensitive applications, the device can be forced into fixed frequency PWM mode by pulling the MODE pin high. This feature, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | 500-mA/600-mA, 4-MHz High-Efficiency Step-Down Converter datasheet (Rev. B) | 2012. 1. 9 | ||
| 애플리케이션 노트 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018. 12. 11 | |||
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 | |||
| 아날로그 디자인 학술지 | Understanding 100% mode in low-power DC/DC converters | 2018. 6. 22 | |||
| 아날로그 디자인 학술지 | Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold | 2017. 10. 24 | |||
| 아날로그 디자인 학술지 | Testing tips for applying external power to supply outputs without an input voltage | 2016. 10. 24 | |||
| 애플리케이션 노트 | Basic Calculation of a Buck Converter's Power Stage (Rev. B) | PDF | HTML | 2015. 8. 17 | ||
| 아날로그 디자인 학술지 | Five steps to a great PCB layout for a step-down converter | 2015. 1. 29 | |||
| 애플리케이션 노트 | Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) | 2012. 1. 13 | |||
| 아날로그 디자인 학술지 | IQ: What it is, what it isn’t, and how to use it | 2011. 6. 17 |
설계 및 개발
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Demonstrate TPS62690/1/2/3 high efficiency VIN step down converter.| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
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주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.