TL780 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS055F – APRIL 1981 – REVISED DECEMBER 1999

6

POST OFFICE BOX 655303

PARAMETER

TEST CONDITIONS†

TL780-15Y

UNIT

PARAMETER

TEST CONDITIONS†

MIN

TYP

MAX

UNIT

Output voltage

IO = 5 mA to 1 A,

P

≤ 15 W

15

V

Input voltage regulation

VI = 17.5 V to 30 V

1.5

mV

Input voltage regulation

VI = 20 V to 26 V

1.5

mV

Output voltage regulation

IO = 5 mA to 1.5 A

7

mV

Output voltage regulation

IO = 250 mA to 750 mA

2.5

mV

Output resistance

f = 1 kHz

0.0035

W

Output noise voltage

f = 10 Hz to 100 kHz

225

µV

Dropout voltage

IO = 1 A

2

V

Input bias current

5.5

mA

Short-circuit output current

230

mA

Peak output current

2.2

A

† 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.

PARAMETER MEASUREMENT INFORMATION

(see Note B)

C2 = 0.22

µF

(see Note A)

C1 = 0.33

µF

OUTPUT

(see Note C)

INPUT

C

O

I

TL780

NOTES: A. C1 is required when the regulator is far from the power-supply filter.

B. C2 is not required for stability; however, transient response is improved.

C. Permanent damage can occur when OUTPUT is pulled below ground.

Figure 1. Test Circuit