UPC337 datasheet(3/8 Pages) NEC

部件名	UPC337

功能描述	3-TERMINAL NEGATIVE ADJUSTABLE REGULATOR

PDF	8 Pages

Scroll/Zoom	100%

制造商	NEC [NEC]

网页	http://www.nec.com/

标志

3 / 8 page

µPC337

TYPICAL CONNECTION

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

120

–5.0

360

–12

1032

–24

2184

–30

2760

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.

•

PC337

INPUT

OUTPUT

CADJ

10 F

ADJ

120

Ω

CIN

1 F

4.7 F

VIN

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