KA7915ATU datasheet(5/18 Pages) FAIRCHILD

Il numero della parte	KA7915ATU

Spiegazioni elettronici	3-Terminal 1 A Negative Voltage Regulator

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Produttore elettronici	FAIRCHILD [Fairchild Semiconductor]

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KA79XX / KA79XXA / LM79XX Rev. 1.1.0

5

Electrical Characteristics (KA7908 / LM7908)

(VI = -14 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF; unless otherwise specified.)

Note:

5. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must

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

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VO

Output Voltage

TJ =+25°C

-7.7

-8.0

-8.3

V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = -10 V to -23 V

-7.6

-8.0

-8.4

ΔVO

Line Regulation(5)

TJ = +25°C

VI = -10.5 V to -25 V

10

160

mV

VI = -11 V to -17 V

5

80

ΔVO

Load Regulation(5)

TJ = +25°C, IO = 5 mA to 1.5 A

12

160

mV

TJ = +25°C, IO = 250 mA to 750 mA

4

80

IQ

Quiescent Current

TJ = +25°C3

6

mA

ΔIQ

Quiescent Current

Change

IO = 5 mA to 1 A

0.05

0.50

mA

VI = -10.5 V to -25 V

0.10

1.00

ΔVo/ΔT

Temperature Coefficient

of VD

IO = 5 mA

-0.6

mV/

°C

VN

Output Noise Voltage

f = 10 Hz to 100 kHz, TA = +25°C175

μV

RR

Ripple Rejection

f = 120 Hz,

ΔVI = 10 V

54

60

dB

VD

Dropout Voltage

TJ =+25°C, IO = 1 A

2

V

ISC

Short-Circuit Current

TJ =+25°C, VI = -35 V

300

mA

IPK

Peak Current

TJ = +25°C2.2

A

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