Datasheet > UC2902DG4

UC2902DG4

更新时间： 2024-11-26 02:58:39

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
10页	305K
描述
LOAD SHARE CONTROLLER

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UC2902DG4 数据手册

UC2902

UC3902

SLUS232E − DECEMBER 19, 2002 − REVISED JULY 2011

LOAD SHARE CONTROLLER

FEATURES

DESCRIPTION

2.7-V to 20-V Operation

The UC3902 load share controller is an 8-pin

8-Pin Package

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.

Requires Minimum Number of External

Components

Compatible with Existing Power Supply

Designs Incorporating Remote Output

Voltage Sensin

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.

Differential Share Bus

Precision Current Sense Amplifier (40 Gain)

UVLO (Undervoltage Lockout) Circuitry

User Programmable Share Loop

Compensation

APPLICATIONS

Paralelled Power Supplies

GND

VCC

BIAS

UVLO

−

SHARE DRIVE AMPLIFIER

40R

SENSE

−

SHARE+

CURRENT SENSE

AMPLIFIER

SHARE SENSE AMPLIFIER

−

SHARE−

ERROR AMPLIFIER

ADJ

35 mV

0.6 V

−

ADJ AMPLIFIER

COMP

−

2.3 V

ADJR

UDG−01141

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

12 3 4 5 6 7...10

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UC2902DG4 替代型号

型号	品牌	替代类型	描述	数据表
UC2902DTRG4	TI	完全替代	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, GREEN, SOIC-8
UC2902DTR	TI	完全替代	20V load share controller, -40°C to 85°C 8-SOIC -40 to 85
UC2902D	TI	完全替代	LOAD SHARE CONTROLLER

与UC2902DG4相关器件

型号	品牌	获取价格	描述	数据表
UC2902DTR	TI	获取价格	20V load share controller, -40°C to 85°C 8-SOIC -40 to 85
UC2902DTRG4	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, GREEN, SOIC-8
UC2902N	TI	获取价格	LOAD SHARE CONTROLLER
UC2902PW	TI	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, TSSOP-8, Power Management Circuit
UC2902PWR	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, TSSOP-8
UC2903	TI	获取价格	Quad Supply and Line Monitor
UC2903DW	TI	获取价格	Quad Supply and Line Monitor
UC2903DWG4	TI	获取价格	Quad Supply and Line Monitor
UC2903DWTR	TI	获取价格	Quad Supply and Line Monitor
UC2903DWTRG4	TI	获取价格	Quad Supply and Line Monitor

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