Datasheet

3
LT1020
sn1020 1020fcs
T
J
= 25°C
E
LECTR
IC
AL C CHARA TERIST
ICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Regulator
Feedback Sense Voltage V
IN
= 12V 2.44 2.5 2.56 V
Dropout Detector Current ∆V
OUT
= –0.05V, I
OUT
= 500µA320µA
Feedback Bias Current 15 40 nA
Minimum Load Current V
IN
= 36V 1 5 µA
Short-Circuit Current V
IN
= 36V 300 400 mA
Pins 9 and 10 Shorted, V
IN
= 4.5V 3 30 mA
Comparator
Offset Voltage 0V ≤ V
CM
≤ 35V, V
IN
= 36V 3 7 mV
Bias Current 0V ≤ V
CM
≤ 35V, V
IN
= 36V 15 40 nA
Offset Current 0V ≤ V
CM
≤ 35V, V
IN
= 36V 4 15 nA
Gain-NPN Pull-Down ∆V
OUT
= 29V, R
L
= 20k 2000 10000 V/V
Common Mode Rejection 0V ≤ V
CM
≤ 35V, V
IN
= 36V 80 94 dB
Power Supply Rejection 4.5V ≤ V
S
≤ 36V 80 96 dB
Output Sink Current V
IN
= 4.5V 10 18 mA
NPN Saturation Voltage I
OUT
= 1mA 0.4 0.6 V
Output Source Current 60 200 µA
Input Voltage Range 0V
IN
– 1 V
Response Time 5 µs
Leakage Current (NPN) 2 µA
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
J
= 25°C.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference
Reference Voltage 4.5V ≤ V
IN
≤ 36V ● 2.40 2.50 2.55 V
Line Regulation 4.5V ≤ V
IN
≤ 36V ● 0.01 0.02 %/V
Load Regulation –0.5mA ≤ I
REF
≤ 1mA, V
IN
= 12V ● 0.3 0.4 %
Output Source Current V
IN
= 5V ● 1mA
Output Sink Current V
IN
= 5V ● 0.5 mA
Regulator
Supply Current V
IN
= 6V, I
OUT
≤ 100µA ● 65 95 µA
V
IN
= 36V, I
OUT
≤ 100µA ● 85 120 µA
V
IN
= 12V, I
OUT
= 125mA ● 11 20 mA
Output Current (V
IN
– V
OUT
) ≥ 1V, V
IN
≥ 6V ● 125 mA
Load Regulation (V
IN
– V
OUT
) ≥ 1V, V
IN
≥ 6V ● 1%
Line Regulation 6V ≤ V
IN
≤ 36V ● 0.02 %/V
Dropout Voltage I
OUT
= 100µA ● 0.06 V
I
OUT
= 125mA ● 0.85 V
Feedback Sense Voltage V
IN
= 12V ● 2.38 2.5 2.57 V
Dropout Detector Current ∆V
OUT
= –0.05V, I
OUT
= 500µA ● 3 µA
Feedback Bias Current ● 50 nA
Minimum Load Current V
IN
= 36V ● 50 µA
Short-Circuit Current V
IN
= 36V ● 300 400 mA
Pins 9 and 10 Shorted, V
IN
= 4.5V ● 2.5 30 mA
Comparator
Offset Voltage 0V ≤ V
CM
≤ 35V, V
IN
= 36V ● 10 mV
Bias Current 0V ≤ V
CM
≤ 35V, V
IN
= 36V (Note 2) ● 15 60 nA