LM7905P datasheet(9/11 Pages) FS

Part #	LM7905P

Description	3-Terminal 1.0A Negative voltage Regulators

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Manufacturer	FS [First Silicon Co., Ltd]

Direct Link	http://www.firstsilicon.co.kr/

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9 / 11 page

2011. 3. 02

9/11

LM7905P ~ LM7924P

Revision No : 0

LM7918P Electrical characteristics

(TJ = 0 to 125

°C, VIN=-27V, IO=500 mA, CI=2.2 µF, CO=1.0 µF, unless otherwise noted)

Characteristic

Symbol

Condition

Min

Typ

Max

Unit

Output voltage

VO

TJ=25°C

-17.3

-18

-18.7

V

5mA ≤ IO ≤ 1.0A, PD≤15W

-21V

≥ VIN ≥ -33V

-17.1

-18

-18.9

Line regulation (TJ=25°C)

(Note 1)

Regline

-21V

≥ VIN ≥ -33V

-24V

≥ VIN ≥ -30V

360

mV

180

Load regulation (TJ=25°C)

(Note 1)

Regload

5.0 mA ≤ IO ≤ 1.5A

250 mA ≤ IO ≤ 750 mA

360

mV

180

Quiescent current

IQ

TJ=25°C

6

mA

Quiescent current change

Δ IQ

5.0 mA ≤ IO ≤ 1.0 A

-21V

≥ VIN ≥ -33V

0.5

mA

1.0

Output Voltage Drift

ΔVO/ΔT IO = 5 mA

-1.0

mV/

°C

Output noise voltage

VN

10 Hz ≤ f ≤ 100 KHz, TA=25°

300

µV/VO

Ripple rejection

RR

-22V

≥ VIN ≥ -32V, f=120 Hz

54

60

dB

Dropout voltage

VDROP

IO = 1.0A, TJ=25°C

1.3

V

Short circuit current limit

ISC

VIN = -35V, TA=25°C

500

mA

Peak output current

IPK

TJ=25°C

2.2

A

Note 1 Line and Load regulation are specified at constant junction temperature. Changes of VO due to heating

effects must be taken into account separately. Pulse testing with low duty circle is used.

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LM7905P Datasheet(PDF) 9 Page - First Silicon Co., Ltd

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