TPS62651 - 具有 I2C 兼容接口的 800mA、6MHz 高效降压转换器

TPS62651是TI德州仪器公司的一款转换器（集成开关）产品，TPS62651是具有 I2C 兼容接口的 800mA、6MHz 高效降压转换器，本站介绍了TPS62651的封装应用图解、特点和优点、功能等，并给出了与TPS62651相关的TI元器件型号供参考。

TPS62651 - 具有 I2C 兼容接口的 800mA、6MHz 高效降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS6265x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6265x supports up to 800mA load current and allows the use of small, low cost inductors and capacitors.

The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. With an output voltage range adjustable via I2C interface down to 0.75V, the device supports low-voltage DSPs and processors core power supplies in smart-phones and handheld computers.

The TPS6265x operates at a regulated 6MHz switching frequency and enters the efficiency optimized power-save mode operation at light load currents to maintain high efficiency over the entire load current range. In the shutdown mode, the current consumption is reduced to less than 3.5µA.

The serial interface is compatible with Standard, Fast/Fast Plus and High-Speed mode I2C specification allowing transfers at up to 3.4 Mbps. This communication interface is used for dynamic voltage scaling with voltage steps down to 12.5mV, for setting the output voltage or reprogramming the mode of operation (PFM/PWM or Forced PWM) for instance.

The TPS6265x is available in an 9-pin chip-scale package (CSP).

产品特性

86% Efficiency at 6 MHz Operation
38µA Quiescent Current
Wide VIN Range From 2.3 V to 5.5 V
6MHz Regulated Frequency Operation
Best-In-Class Load and Line Transient
±2% PWM DC Voltage Accuracy
Automatic PFM/PWM Mode Switching
Low Ripple Light-Load PFM
I2C Compatible Interface up to 3.4 Mbps
Pin-Selectable Output Voltage (VSEL)
Internal Soft-Start, <150-µs Start-Up Time
Current Overload and Thermal Shutdown Protection
Three Surface-Mount External Components Required (One MLCC Inductor, Two Ceramic Capacitors)
Complete Sub 1-mm Component Profile Solution
Total Solution Size <13mm2
Available in a 9-Pin NanoFree (CSP) Packaging
APPLICATIONS
- SmartReflex Compliant Power Supply
- OMAP Application Processor Core Supply
- Cell Phones, Smart-Phones
- Micro DC-DC Converter Modules

NanoFree Is a trademark of Texas Instruments SmartReflex Is a trademark of Texas Instruments OMAP Is a trademark of Texas Instruments

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