7908•

THREE-TERMINAL NEGATIVE VOLTAGE REGULATOR IC

FEATURES:

- OUTPUT CURRENT IN EXCESS OF 1A;

- NO EXTERNAL COMPONENTS REQUIRED;

- INTERNAL SHORT CIRCUIT CURRENT LIMITING;

- INTERNAL THERMAL OVERLOAD PROTECTION;

- OUTPUT TRANSISTOR SAFE-AREA COMPENSATION;

ABSOLUTE MAXIMUM RATINGS (Ta= 25

° C)

Characteristic

Symbol

Norm

Unit

Input Voltage

Vin

V

-35

Maximum Dissipated

Power(with heat sink)

Ptot(max) W

15

Maximum Dissipated

Power(without heat sink)

Ptot(max) W

1.5

Thermal Resistance

Junction to Case

OjC

°C/W

5.0

Thermal Resistance,

Junction to Air

OjA

°C/W

65

Junction Temperature

°C

150

TO-220

1

1. GND

2. Input

3. Output

Tc=-45

÷+70°C

ELECTRICAL CHARACTERISTICS

(Vin=-14V,Io=0.5A,Ci=2.2mkF,Co=1.0mkF,Tj=0+125°C, unless otherwise noted.)

Characteristic

Symbo

l

Norm

Unit

Min

TYP Max

Output Voltage(Tj=25°C)

Vo

-7.7

-8.3

V

Output Voltage (5.0mA

≤Io≤1.0A,Po≤15W)

-10,5V

≥Vin≥-23V

Vo

-7.6

-8.4

V

Line Regulation(Tj=+25°C, Io=0,1A)

-10,5 V

≥Vin≥-25 V

-11V

≥Vin≥-17 V

(Tj=+25°C, Io=0,5A)

-10,5 V

≥Vin≥-25 V

-11V

≥Vin≥-17 V

∆Vv

80

40

160

80

mV

Load Regulation(Tj=+25°C)

5.0mA

≤Io≤1.5A

0.25A

≤Io≤0.75A

∆Vi

160

80

mV

Quiescent Current(Tj=+25°C)

Ib

8.0

mA

Quiescent Current Change -10.5 V

≥Vin≥-25 V

5.0mA

≤Io≤1.5 A

∆Ib

1.0

0.5

mA

Dropout Voltage (Io=1.0A,Tj=+25°C)

Vi-Vo

2.0

V

Average Temperature Coefficient of Output

Voltage

TCVo

0,5

mV/°C