Rainbow-electronics BD9718G Manual do Utilizador descarregar pdf (Página 2)

BD9718G

Regulators

2/2

!

!!

!Electrical Characteristics (Unless otherwise noted, Ta=25°C, V

CC

=5V)

Conditions

Parameter

Output sense voltage

Switching frequency

Maxim ON duty cycle

Output SAT voltage 1

Output SAT voltage 2

−5.00

Typ.

900

V

CC-0.8

80

30

3.8

kHz

Unit

V

V

%

mV

V

Vs

Fosc

V

UT

VSAT1

VSAT2

DON

Symbol

I

OUT−=20mA, Vs=−5.5V

I

OUT+=20mA, Vs=−4.5V

V

CC : sweep up

V

FB=1.0V

V

FB=0.75V

V

FB=0.75V

−5.05

Min.

70

3.5

V

CC-1

600

−

−4.95

Max.

Bias current

4.6 mAI

CC

VFB=1V−

8

1200

90

150

−

4.0UVLO threshold voltage

!

!!

!Application circuit

V

CC

V

S

V

IN=

5V V

O=−

5V

(300mA)

FB

GND

OUT

1 2 3

BD9718G 1
Appendix1-Rev1.0 3

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