LHC7913 - 4

15-Jul-03 - Rev. 1.1

Page 3 of 3

ELECTRICAL CHARACTERISTICS:

Unless otherwise specified , Vin = Vout - 2.5 V, Vout =-3V, Vplus=3V,Tj =25°C, Cin = 1

µµF,

Cout = 1

µµF

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Operating input voltage

Iout = 3A

Tj=-55° to 125° C

-3

-9

V

Output voltage accuracy

Iout = 5mA

Tj=-55° to 125° C

-2

2

%

Operating output voltage

Iout= 3A

Tj=-55° to 125° C

-1.21

-7

V

Ishort

Output current limit

Adjustable

4.5

A

∆Vo/V

i

Line regulation

Vi=Vout-2.5 to -12V

Iout = 5mA

1

%

∆Vo/VoI

Lo

Load regulation

Iout = 5mA to 3A

1

%

On mode

Output shorted to GND, Iocm = 0mA

200

On mode,

Output shorted to GND, Iocm =10mA

500

On mode

Iout=0

170

Vplus

Quescent

current

Quiescient current

Iq, Plus

Tj=-55° to 125° C

Vplus =3V

Off mode, Vinh=3V

200

µΑ

Vi=Vout-2.5 to -12V, On mode Iout= 5 mA

3

4

Vi=Vout-2.5 to -12V, On mode Iout = 30 mA

5

6

Vi=Vout-2.5 to -12V, On mode Iout = 300 mA

20

35

Vi=Vout-2.5 to -12V, On mode Iout = 1 A

40

75

Vi=Vout-2.5 to -12V, On mode Iout =2 A

80

140

Vi=Vout-2.5 to -12V, On mode Iout =3 A

150

240

Iq

(Vminus)

Quiescent Current,

Tj=-55° to 125° C

OFF mode Vinh =3V Vplus =3V

0.3

mA

Iout= 400 mA, Tj=-55° to 125° C

0.4

0.8

Iout= 1 A,

Tj=-55° to 125° C

0.6

1.2

Iout= 2 A,

Tj=-55° to 125° C

0.95

2

Vd

Dropout voltage

Iout =3 A,

Tj=-55° to 125° C

1.3

2.6

V

Inhibit voltage

turn,Off voltage

turn-On voltage

Vplus = 3V Tj=-55° to 125° C

2

0.8

V

SVR

Supply voltage

rejection

f=120 Hz

f= 33 Khz

70

30

dB

Shutdown input current

Vplus =3V

15

µΑ

Cout

Output capacitance

Iout=0 to 3A

1

µF

ESR

Electrical series

Resistance

Iout=0 to 3A

2

6

ohm

Overcurrent monitor

voltage Low

0.6

V

Overcurrent monitor

voltage High

Vplus = 3V

Vplus

V

en/Vout

Output noise voltage

10Hz < freq < 100 Khz

400

µVrms/V