UA7908CKCSE3 datasheet(3/14 Pages) TI1

No. de pieza	UA7908CKCSE3

Descripción Electrónicos	NEGATIVE-VOLTAGE REGULATORS

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uA7905 Electrical Characteristics

uA7908 Electrical Characteristics

µA7900 SERIES

NEGATIVE-VOLTAGE REGULATORS

SLVS058H – JUNE 1976 – REVISED NOVEMBER 2006

at specified virtual junction temperature, V

I = –10 V, IO = 500 mA (unless otherwise noted)

µA7905C

PARAMETER

TEST CONDITIONS

TJ(1)

UNIT

MIN

TYP

MAX

25

°C

–4.8

–5

–5.2

IO = 5 mA to 1 A, VI = –7 V to –20 V,

Output voltage(2)

V

PD ≤ 15 W

0

°C to 125°C

–4.75

–5.25

VI = –7 V to –25 V

12.5

50

Input regulation

mV

VI = –8 V to –12 V

4

15

Ripple rejection

VI = –8 V to –12 V, f = 120 Hz

0

°C to 125°C

54

60

dB

IO = 5 mA to 1.5 A

15

100

Output regulation

mV

IO = 250 mA to 750 mA

5

50

Temperature coefficient of output voltage

IO = 5 mA

0

°C to 125°C

–0.4

mV/

°C

Output noise voltage

f = 10 Hz to 100 kHz

25

°C

125

µV

Dropout voltage

IO = 1 A

25

°C

1.1

V

Bias current

25

°C

1.5

2

mA

VI = –7 V to –25 V

0.15

0.5

Bias current change

mA

IO = 5 mA to 1 A

0.08

0.5

Peak output current

25

°C

2.1

A

(1)

Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be

taken into account separately. All characteristics are measured with a 2-

µF capacitor across the input and a 1-µF capacitor across the

output.

(2)

This specification applies only for dc power dissipation permitted by absolute maximum ratings.

at specified virtual junction temperature, V

I = –14 V, IO = 500 mA (unless otherwise noted)

µA7908C

PARAMETER

TEST CONDITIONS

TJ(1)

UNIT

MIN

TYP

MAX

25

°C

–7.7

–8

–8.3

IO = 5 mA to 1 A,

Output voltage(2)

V

VI = –10.5 V to –23 V, PD ≤ 15 W

0

°C to 125°C

–7.6

–8.4

VI = –10.5 V to –25 V

12.5

160

Input regulation

mV

VI = –11 V to –17 V

4

80

Ripple rejection

VI = –11.5 V to –21.5 V, f = 120 Hz

0

°C to 125°C

54

60

dB

IO = 5 mA to 1.5 A

15

160

Output regulation

mV

IO = 250 mA to 750 mA

5

80

Temperature coefficient of output voltage

IO = 5 mA

0

°C to 125°C

–0.6

mV/

°C

Output noise voltage

f = 10 Hz to 100 kHz

25

°C

200

µV

Dropout voltage

IO = 1 A

25

°C

1.1

V

Bias current

25

°C

1.5

2

mA

VI = –10.5 V to –25 V

0.15

1

Bias current change

mA

IO = 5 mA to 1 A

0.08

0.5

Peak output current

25

°C

2.1

A

(1)

Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be

taken into account separately. All characteristics are measured with a 2-

µF capacitor across the input and a 1-µF capacitor across the

output.

(2)

This specification applies only for dc power dissipation permitted by absolute maximum ratings.

3

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