TL780 datasheet(3/8 Pages) TI

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TL780 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS055F – APRIL 1981 – REVISED DECEMBER 1999

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

absolute maximum ratings over operating temperature range (unless otherwise noted)†

Input voltage, VI

35 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

θJA (see Notes 1 and 2): KC package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . .

KTE package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air, TA; case, TC; or virtual junction, TJ, temperature range

°C to 150°C

. . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable

ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability. Due to

variations in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be

activated at power levels slightly above or below the rated dissipation.

2. The package thermal impedance is calculated in accordance with JESD 51.

recommended operating conditions

MIN

MAX

UNIT

TL780-05C

Input voltage, VI

TL780-12C

14.5

TL780-15C

17.5

Output current, IO

1.5

Operating virtual junction temperature, TJ

125

°C

electrical characteristics at specified virtual junction temperature, VI = 10 V, IO = 500 mA (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

T ‡

TL780-05C

UNIT

PARAMETER

TEST CONDITIONS

TJ‡

MIN

TYP

MAX

UNIT

Output voltage

IO = 5 mA to 1 A,

≤ 15 W,

°C

4.95

5.05

Output voltage

VI = 7 V to 20 V

°C to 125°C

4.9

5.1

Input voltage regulation

VI = 7 V to 25 V

°C

0.5

Input voltage regulation

VI = 8 V to 12 V

°C

0.5

Ripple rejection

VI = 8 V to 18 V,

f = 120 Hz

°C to 125°C

Output voltage regulation

IO = 5 mA to 1.5 A

°C

Output voltage regulation

IO = 250 mA to 750 mA

°C

1.5

Output resistance

f = 1 kHz

°C to 125°C

0.0035

Temperature coefficient of output voltage

IO = 5 mA

°C to 125°C

0.25

mV/

°C

Output noise voltage

f = 10 Hz to 100 kHz

°C

µV

Dropout voltage

IO = 1 A

°C

Input bias current

°C

Input bias current change

VI = 7 V to 25 V

°Cto125°C

0.7

1.3

Input bias-current change

IO = 5 mA to 1 A

°C to 125°C

0.003

0.5

Short-circuit output current

°C

750

Peak output current

°C

2.2

‡ 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 0.33-

µF capacitor across the input and a 0.22-µF capacitor across the output.

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