TPS650250RHBR电池管理 Power原装德州TI

1 Features

1• 1.6 A, 97% Efficient Step-Down Converter for

System Voltage (VDCDC1)

– 3.3 V, 2.8 V, or Adjustable

• 0.8 A, up to 95% Efficient Step-Down Converter

for Memory Voltage (VDCDC2)

– 1.8 V, 2.5 V, or Adjustable

• 0.8 A, 90% Efficient Step-Down Converter for

Processor Core (VDCDC3)

• Adjustable Output Voltage on VDCDC3

• 30-mA LDO for Vdd_alive

• 2 × 200 mA General-Purpose LDOs (LDO1 and

LDO2)

• Dynamic Voltage Management for Processor Core

• LDO1 and LDO2 Voltage Externally Adjustable

• Separate Enable Pins for Inductive Converters

• 2.25-MHz Switching Frequency

• 85-μA Quiescent Current

• Thermal Shutdown Protection

2 Applications

• Cellular, Smart Phones

• GPS

• Digital Still Cameras

• Split Supply DSP and μP Solutions

• Samsung ARM-Based Processors

3 Description

The TPS650250 device is an integrated power

management IC for applications requiring multiple

power rails. The TPS650250 provides three highly

efficient, step-down converters targeted at providing

the core voltage, peripheral, I/O and memory rails in

a processor-based system. All three step-down

converters, controlled by the MODE pin, enter a lowpower

mode at light load for maximum efficiency or

operate in forced fixed frequency PWM mode.

The TPS650250 device integrates two generalpurpose

200-mA LDO voltage regulators. Both LDOs

operate with an input voltage range from 1.5 V to 6.5

V, allowing them to be supplied from one of the stepdown

converters.

TPS650250RHBRTPS650250RHBRTPS650250RHBRTPS650250RHBR

1功能

1•1.6 A, 97%高效降压变换器

系统电压(VDCDC1)

- 3.3 V、2.8 V或可调

•0.8 A，高达95%的高效降压转换器

存储电压(VDCDC2)

- 1.8 V、2.5 V或可调

•0.8 A, 90%高效降压变换器

处理器核心(VDCDC3)

•VDCDC3可调输出电压

•30 ma LDO的Vdd_alive

•2×200 mA通用ldo(LDO1和

LDO2)

•处理器核心的动态电压管理

•LDO1和LDO2电压外部可调

•用于感应转换器的独立启用引脚

•2.25 mhz的开关频率

•85 -μa静态电流

•热停堆保护

2应用程序

手机，智能手机

•全球定位系统

•数码相机

•将供应DSP和μP解决方案

•三星arm处理器

3描述

TPS650250装置是集成电源

管理集成电路的应用需要多个

rails。TPS650250提供了三个高度

高效，降压转换器的目标提供

核心电压、外设、I/O和内存均在导轨内

一个处理器的系统。所有三个降压

由模态引脚控制的转换器进入低功率

在轻负载模式，以获得最大的效率或

在强制固定频率PWM模式下工作。

TPS650250设备集成了两大用途

200毫安LDO电压调节器。两个ldo

在输入电压1.5 V到6.5之间工作

V，允许他们从一个台阶下来提供

转换器。