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Electrical Characteristics
Electrical Characteristics
TL780 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS055M – APRIL 1981 – REVISED OCTOBER 2006
at specified virtual junction temperature, V
I
= 19 V, I
O
= 500 mA (unless otherwise noted)
TL780-12C
PARAMETER TEST CONDITIONS T
J
(1)
UNIT
MIN TYP MAX
25 ° C 11.88 12 12.12
I
O
= 5 mA to 1 A, P ≤ 15 W,
Output voltage V
V
I
= 14.5 V to 27 V
0 ° C to 125 ° C 11.76 12.24
V
I
= 14.5 V to 30 V 1.2 12
Input voltage regulation 25 ° C mV
V
I
= 16 V to 22 V 1.2 12
Ripple rejection V
I
= 15 V to 25 V, f = 120 Hz 0 ° C to 125 ° C 65 80 dB
I
O
= 5 mA to 1.5 A 6.5 60
Output voltage regulation 25 ° C mV
I
O
= 250 mA to 750 mA 2.5 36
Output resistance f = 1 kHz 0 ° C to 125 ° C 0.0035 Ω
Temperature coefficient of
I
O
= 5 mA 0 ° C to 125 ° C 0.6 mV/ ° C
output voltage
Output noise voltage f = 10 Hz to 100 kHz 25 ° C 180 µ V
Dropout voltage I
O
= 1 A 25 ° C 2 V
Input bias current 25 ° C 5.5 8 mA
V
I
= 14.5 V to 30 V 0.4 1.3
Input bias-current change 0 ° C to 125 ° C mA
I
O
= 5 mA to 1 A 0.03 0.5
Short-circuit output current 25 ° C 350 mA
Peak output current 25 ° C 2.2 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 0.33- µ F capacitor across the input and a 0.22- µ F capacitor across
the output.
at specified virtual junction temperature, V
I
= 23 V, I
O
= 500 mA (unless otherwise noted)
TL780-15C
PARAMETER TEST CONDITIONS T
J
(1)
UNIT
MIN TYP MAX
25 ° C 14.85 15 15.15
I
O
= 5 mA to 1 A, P ≤ 15 W,
Output voltage V
V
I
= 17.5 V to 30 V
0 ° C to 125 ° C 14.7 15.3
V
I
= 17.5 V to 30 V 1.5 15
Input voltage regulation 25 ° C mV
V
I
= 20 V to 26 V 1.5 15
Ripple rejection V
I
= 18.5 V to 28.5 V, f = 120 Hz 0 ° C to 125 ° C 60 75 dB
I
O
= 5 mA to 1.5 A 7 75
Output voltage regulation 25 ° C mV
I
O
= 250 mA to 750 mA 2.5 45
Output resistance f = 1 kHz 0 ° C to 125 ° C 0.0035 Ω
Temperature coefficient of
I
O
= 5 mA 0 ° C to 125 ° C 0.62 mV/ ° C
output voltage
Output noise voltage f = 10 Hz to 100 kHz 25 ° C 225 µ V
Dropout voltage I
O
= 1 A 25 ° C 2 V
Input bias current 25 ° C 5.5 8 mA
V
I
= 17.5 V to 30 V 0.4 1.3
Input bias-current change 0 ° C to 125 ° C mA
I
O
= 5 mA to 1 A 0.02 0.5
Short-circuit output current 25 ° C 230 mA
Peak output current 25 ° C 2.2 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 0.33- µ F capacitor across the input and a 0.22- µ F capacitor across
the output.
4
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