深圳市中立信电子科技有限公司

1 Features

1• Charger and Power Path

– 2-A Output Current on Power Path

– Linear Charger; 700-mA Maximum Charge

Current

– 20-V Tolerant USB and AC Inputs

– Thermal Regulation, Safety Timers

– Temperature Sense Input

• Step-Down Converter (DCDC1, DCDC2,

DCDC3)

– Three Step-Down Converter With Integrated

Switching FETs

– 2.25-MHz Fixed Frequency Operation

– Power-Save Mode at Light-Load Current

– Output Voltage Accuracy in PWM Mode ±2%

– 100% Duty Cycle for Lowest Dropout

– Typical 15-μA Quiescent per Converter

– Passive Discharge to Ground When Disabled

• LDO Regulators (LDO1, LDO2)

– Two Adjustable LDOs

– LDO2 can be Configured to Track DCDC3

– Typical 15-μA Quiescent Current

• Load Switches (LDO3, LDO4)

– Two Independent Load Switches That Can Be

Configured as LDOs

2 Applications

• Sitara™ AM335x Processor Power

• Portable Navigation Systems

• Tablet Computing

• 5-V Industrial Equipment

3 Description

The TPS65217x is a single-chip power management

IC (PMIC) specifically designed to power the AM335x

ARM® Cortex®

-A8 processor in portable and 5-V linepowered

applications. The PMIC device provides a

linear battery charger for single-cell Li-ion and Lipolymer

batteries, dual-input power path, three stepdown

converters, four low-dropout (LDO) regulators,

and a high-efficiency boost converter to power two

strings of up to 10 LEDs each.  
TPS65217BRSLRTPS65217BRSLRTPS65217BRSLRTPS65217BRSLR

充电器和电源路径

电源路径上的2-A输出电流

——线性充电器;700 -马的费用

当前的

- 20 v耐受USB和AC输入

-温度调节，安全定时器

-温度感觉输入

•降压转换器(DCDC1, DCDC2，

DCDC3)

-集成三降压变频器

开关场效应晶体管

- 2.25 mhz固定频率运行

-轻载电流省电模式

——在PWM模式下输出电压精度±2%

- 100%占空比，漏电

每个转换器——典型15-μA静止

-禁用时被动放电

•LDO调节器(LDO1, LDO2)

-两个可调LDOs

LDO2可以配置为跟踪DCDC3

——典型15-μA静态电流

•负载开关(LDO3, LDO4)

-两个独立的负载开关可以

配置为ldo

2应用程序

•思达拉™AM335x处理器能力

•便携式导航系统

•平板电脑

•5-V工业设备

3描述

TPS65217x是一种单片机电源管理

专为AM335x供电的IC (PMIC)

手臂®®皮层

-A8处理器在便携式和5-V线供电

应用程序。PMIC设备提供一个

线性电池充电器单细胞锂离子和锂聚合物

电池，双输入电源路径，三下

转换器，四个低辍学率(LDO)调节器，

和一个高效率的升压转换器到功率2

每根led多可达10根。三个

高效2.25 mhz降压变流器可以

提供电压、内存和I/O电压

为一个系统。