TPS51020DBT集成电路（IC）的特殊用途稳压器规格书PDF中文资料

TPS51020DBT属于集成电路（IC）的特殊用途稳压器。由德州仪器制造生产的TPS51020DBT特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。

FEATURES

Wide Input Voltage Range: 4.5-V to 28-V

Selectable Dual and DDR Modes

Selectable Fixed Frequency Voltage Mode

Advanced Power Good Logic Monitors both

Channels

Selectable Autoskip Mode

Integrated Boot Strap Diodes

180° Phase Shift Between Channels

Integrated 5-V, 60-mA Regulator

Input Feedforward Control

1% Internal 0.85-V Reference

RDS(on) Overcurrent Detection (4200 ppm/°C)

Integrated OVP, UVP and Power Good Timers

30-pin TSSOP Package

APPLICATIONS

Notebook Computers System Bus and I/O

DDR I or DDR II Termination

DESCRIPTION

The TPS51020 is a multi-function dualsynchronous

step-down controller for notebook

system power. The part is specifically designed

for high performance, high efficiency applications

where the loss associated with a current sense

resistor is unacceptable. The TPS51020 utilizes

feed forward voltage mode control to attain high

efficiency without sacrificing line response.

Efficiency at light load conditions can be

maintained high as well by incorporating autoskip

operation. A selectable, Suspend to RAM (STR)

supported, DDR option provides a one chip

solution for all switching applications from

5-V/3.3-V supply to a complete DDR termination

solution.