LM4041 datasheet(6/7 Pages) UTC

部件名	LM4041

功能描述	PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

Download	7 Pages

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制造商	UTC [Unisonic Technologies]

网页	http://www.utc-ic.com

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6 / 7 page

LM4041

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

6 of 7

www.unisonic.com.tw

QW-R101-027.a

APPLICATION INFORMATION

VZ is set according to the equation shown as below which can be set by a user-defined resistor divider.

VREF

R1

R2

RS

VS

VZ = VREF 1+

R2

R1

LM4041

Adjustable Shunt Regulator

Cathode and Load Currents

The total current available to supply the load (IL) and bias the UTC LM4041 (IZ) is set by RS, so its value must be

set properly. In all cases, IZ must stay in a specified range for proper operation of the reference; RS must be small

enough to supply the minimum IZ. At maximum VS and minimum IL, to limit IZ to not exceed rating of 12 mA, RS must

be large enough.

RS=

)

I

(I

)

V

(V

Z

L

Z

S

+

−

RS

VZ

LM4041

IZ

IZ + IL

IL

VS

Shunt Regulator

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