UC3902DG4集成电路（IC）的电源管理-专用规格书PDF中文资料

UC3902DG4属于集成电路（IC）的电源管理-专用。由德州仪器制造生产的UC3902DG4电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。

FEATURES

2.7-V to 20-V Operation

8-Pin Package

Requires Minimum Number of External

Components

Compatible with Existing Power Supply

Designs Incorporating Remote Output

Voltage Sensin

Differential Share Bus

Precision Current Sense Amplifier (40 Gain)

UVLO (Undervoltage Lockout) Circuitry

User Programmable Share Loop

Compensation

APPLICATIONS

Paralelled Power Supplies

DESCRIPTION

The UC3902 load share controller is an 8-pin

device that balances the current drawn from

independent, paralleled power supplies. Load

sharing is accomplished by adjusting each

supplies’ output current to a level proportional to

the voltage on a share bus.

The master power supply, which is automatically

designated as the supply that regulates to the

highest voltage, drives the share bus with a

voltage proportional to its output current. The

UC3902 trims the output voltage of the other

paralleled supplies so that they each support their

share of the load current. Typically, each supply is

designed for the same current level although that

is not necessary for use with the UC3902. By

appropriately scaling the current sense resistor,

supplies with different output current capability

can be paralleled with each supply providing the

same percentage of their output current capability

for a particular load.