Datasheet

2
LT1120
1120fc
1
2
3
4
8
7
6
5
TOP VIEW
GND
FB
SHDN
V
OUT
–INPUT
COMPOUT
REF
V
IN
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
Input Voltage ........................................................... 36V
NPN Collector Voltage ............................................. 36V
Output Short-Circuit Duration.......................... Indefinite
Power Dissipation............................... Internally Limited
ABSOLUTE AXI U RATI GS
W
WW
U
ELECTRICAL CHARACTERISTICS
PACKAGE/ORDER I FOR ATIO
UUW
J8 PACKAGE
8-LEAD CERDIP
T
JMAX
= 150°C, θ
JA
= 100°C/W (J)
ORDER PART
NUMBER
LT1120CN8
LT1120CS8
LT1120IN8
LT1120IS8
S8 PART MARKING
The ● denotes the specifications which apply over thefull operating
temperature range, otherwise specifications are at T
A
= 25°C. T
j
= 25°C.
1120
1120I
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference
Reference Voltage 4.5V ≤ V
IN
≤ 36V 2.46 2.50 2.54 V
Line Regulation 4.5V ≤ V
IN
≤ 36V 0.01 0.015 %/V
Load Regulation –2mA ≤ I
REF
≤ 2mA, V
IN
= 12V 0.3 0.6 %
Output Source Current V
IN
= 5V 2 4 mA
Output Sink Current V
IN
= 5V 2 4 mA
Temperature Stability 1%
Regulator
Supply Current V
IN
= 6V, I
OUT
≤ 100µA4580µA
V
IN
= 36V, I
OUT
≤ 100µA 75 100 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 0.2 0.5 %
Line Regulation 6V ≤ V
IN
≤ 36V 0.01 0.015 %/V
Dropout Voltage I
OUT
= 100µA 0.02 0.05 V
I
OUT
= 125mA 0.4 0.65 V
(Note 1)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
T
JMAX
= 110°C, θ
JA
= 130°C/W (N)
T
JMAX
= 110°C, θ
JA
= 150°C/W (S)
LT1120CJ8
ORDER PART
NUMBER
OBSOLETE PACKAGES
Consider the N8 and S8 Packages for Alternate Source
Operating Temperature Range
LT1120C................................................ 0°C to 100°C
LT1120I ................................................ –40 to 100°C
Storage Temperature Range ................. –65°C to 150°C
TOP VIEW
COMPOUT
–INPUT
GND
FB REF
V
IN
SHDN
V
OUT
8
7
6
5
3
2
1
4
H PACKAGE
8-LEAD TO-5 METAL CAN
ORDER PART
NUMBER
LT1120CH
T
JMAX
= 150°C, θ
JA
= 150°C/W, θ
JC
= 45°C/W