Datasheet

4
LT1020
sn1020 1020fcs
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE CHANGE (%)
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
0.1 10 100 1000
1020 G01
1
T
J
= –55°C
T
J
= 25°C
T
J
= 125°C
PRELOAD = 100µA
Regulator Short-Circuit Current
TEMPERATURE (°C)
–50
SHORT-CIRCUIT CURRENT (mA)
350
300
250
200
150
100
50
0
1020 G03
30
150
–10
70 110
CURRENT LIMIT TIED TO GROUND
Regulator Load Regulation
Dropout Voltage Dropout Voltage
REGULATOR OUTPUT CURRENT (mA)
0.1
0.01
INPUT/OUTPUT DIFFERENTIAL (V)
0.1
1
1 10 100
1020 G06
I DROPOUT DETECTOR = 0.1% I
OUT
I DROPOUT DETECTOR = 1% I
OUT
Dropout Voltage
REGULATOR OUTPUT CURRENT (mA)
SUPPLY CURRENT (mA)
100
10
1
0.1
0.01
0.1 10 100 1000
1020 G02
1
T
J
= –55°C TO 125°C
Supply Current
REGULATOR OUTPUT CURRENT (mA)
0.1
0.01
REGULATOR INPUT/OUTPUT DIFFERENTIAL (V)
0.1
1
10 1000
1020 G04
1 100
∆V
OUT
= 100mV
REGULATOR OUTPUT CURRENT (mA)
0.1
0.01
REGULATOR INPUT/OUTPUT DIFFERENTIAL (V)
0.1
1
10 1000
1020 G05
1 100
DROPOUT DETECTOR = 5µA
PARAMETER CONDITIONS MIN TYP MAX UNITS
Comparator
Offset Current 0V ≤ V
CM
≤ 35V, V
IN
= 36V ● 20 nA
Gain-NPN Pull-Down ∆V
OUT
= 29V, R
L
= 20k ● 1000 V/V
Common Mode Rejection 0V ≤ V
CM
≤ 35V, V
IN
= 36V ● 80 dB
Power Supply Rejection 4.5V ≤ V
IN
≤ 36V ● 80 dB
Output Sink Current V
IN
= 4.5V (Note 3) ● 510 mA
Output Source Current ● 40 120 µA
Input Voltage Range ● 0V
IN
– 1 V
Leakage Current (NPN) V
IN
= 36V ● 8 µA
TYPICAL PERFOR A CE CHARACTERISTICS
UW
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: For 0V ≤ V
CM
≤ 0.1V and T > 85°C I
BIAS(MAX)
is 100nA.
Note 3: For T
A
≤ –40°C output I
SINK(MIN)
is 2.5mA.