LT1120A
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage ........................................................... 36V
NPN Collector Voltage ............................................. 36V
Output Short-Circuit Duration .......................... Indefinite
Power Dissipation ............................... Internally Limited
Operating Temperature Range
LT1120AC ............................................. 0°C to 100°C
LT1120AI ......................................... – 40°C to 100°C
Storage Temperature Range ................. – 65°C to 150°C
PACKAGE/ORDER INFORMATION
TOP VIEW
GND 1
FEEDBACK 2
SHUTDOWN 3
VOUT 4
8 –INPUT
7 COMP OUT
6 REF
5 VIN
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 110°C, θJA = 130°C/W (N)
TJMAX = 110°C, θJA = 190°C/W (S)
ORDER PART
NUMBER
LT1120ACN8
LT1120ACS8
LT1120AIS8
S8 PART
MARKING
1120A
1120AI
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS TJ = 25°C
PARAMETER
Reference
Reference Voltage
Line Regulation
Load Regulation
Output Source Current
Output Sink Current
Temperature Stability
Regulator
Supply Current
Output Current
Load Regulation
Line Regulation
Dropout Voltage
Feedback Sense Voltage
Shutdown Pin Voltage
Shutdown Pin Current
Feedback Bias Current
Minimum Load Current
Short-Circuit Current
Comparator
Offset Voltage
Bias Current
Gain
Power Supply Rejection
Output Sink Current
Saturation Voltage
Input Voltage Range
Response Time
Leakage Current
CONDITIONS
4.5V ≤ VIN ≤ 36V
4.5V ≤ VIN ≤ 36V
–2.0mA ≤ IREF ≤ 2mA, VIN = 12V
VIN = 5V
VIN = 5V
VIN = 6V, IOUT ≤ 100mA
VIN = 36V, IOUT ≤ 100mA
VIN = 12V, IOUT = 125mA
(VIN – VOUT) ≥ 1V, VIN ≥ 6V
(VIN – VOUT) ≥ 1V, VIN ≥ 6V
6V ≤ VIN ≤ 36V
IOUT = 100mA
IOUT = 125mA
VIN = 12V
Normal
VOUT ≤ 0.5V
VIN = 1.4V
Shutdown
VIN = 36V
VIN = 36V
VIN = 36V
VIN = 36V
∆VOUT = 29V, RL = 20k
4.5V ≤ VS ≤ 36V
VIN = 4.5V
IOUT = 1mA
VIN = 36V, V(Pin 7) = 36V
2
MIN
TYP
MAX
UNITS
2.46
2.50
2.54
V
0.01
0.015
%/V
0.3
0.6
%
2
4
mA
2
4
mA
1
%
20
25
µA
30
40
µA
11
20
mA
125
mA
0.2
0.5
%
0.01
0.015
%/V
0.02
0.05
V
0.40
0.65
V
2.44
2.5
2.56
V
0.4
V
2.2
1.4
V
10
µA
15
40
nA
1
5
µA
250
400
mA
2000
80
10
0
3
15
10000
96
18
0.4
5
7
40
0.6
VIN – 1
2
mV
nA
V/V
dB
mA
V
V
µs
µA
1120afa