UPC317 datasheet(3/6 Pages) NEC

部件名	UPC317

功能描述	3-TERMINAL POSITIVE ADJUSTABLE REGULATOR

PDF	6 Pages

Scroll/Zoom	100%

制造商	NEC [NEC]

网页	http://www.nec.com/

标志

3 / 6 page

Data Sheet G12826EJ3V0DS00

µµµµPC317

TYPICAL CONNECTION

PC317

INPUT

OUTPUT

CADJ

10 F

ADJ

240

Ω

CIN

0.1 F

1 F

VIN

Remark R1, R2 : Resistor to set the output voltage.

VO = (1 +

)

• VREF + IADJ • R2 = (1 +

)

• VREF

VO (V)

R2 (

Ω : TYP.)

1.25

2.5

240

5.0

720

2064

4368

5520

CIN

Need to stop the oscillation for the long input wiring length.

Need to stop the oscillation for the long output wiring length.

Improve the transient stability of the output voltage when the lord current is suddently changed.

CADJ :

Improve the ripple rejection and the oscillate rejection.

Protect against CADJ from output short.

Need for VIN < VO.

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