LT3022 LINER [Linear Technology], LT3022 Datasheet - Page 4

• Manufacturer Part Number: LT3022
• Description: 1A, 0.9V to 10V, Very Low Dropout Linear Regulator
• Manufacturer: LINER [Linear Technology]

elecTrical characTerisTics
LT3022
Note 6: The LT3022 typically supplies 1A output current with a 0.9V input
supply. The guaranteed minimum input voltage for 1A output current is
1.10V, especially if cold temperature operation is required.
Note 7: The LT3022 is tested and specified for these conditions with ADJ
tied to OUT.
Note 8: Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout the
output voltage equals: (V
Note 9: The LT3022 is tested and specified for these conditions with
an external resistor divider (3.92k and 19.6k) setting V
external resistor divider adds 50µA of load current.
Note 10: GND pin current is tested with V
current source load. GND pin current increases in dropout. See GND pin
current curves in the Typical Performance Characteristics section.
Typical perForMance characTerisTics

300
270
240
210
180
150
120
90
60
30
0
0
Dropout Voltage
V
OUT
100
= 1.2V
200
OUTPUT CURRENT (mA)
300
T
0.5
0.4
1.1
1.0
0.9
0.8
0.7
0.6
0.3
0.2
0.1
J
400
= 125°C
0
IN
–50
Minimum Input Voltage
T
500
– V
J
= 25°C
–25
DROPOUT
600 700
T
J
= –40°C
0
TEMPERATURE (°C)
800
).
IN
25
900
3022 G01
= V
1000
OUT(NOMINAL)
50
75
OUT
300
270
240
210
180
150
120
100
to 1.2V. The
90
60
30
I
0
L
+ 0.4V and a
= 1A
3022 G04
Guaranteed Dropout Voltage
0
125
= TEST POINTS
100
200
OUTPUT CURRENT (mA)
300
400
500
Note 11: Adjust pin bias current flows out of the ADJ pin.
Note 12: Shutdown pin current flows into the SHDN pin.
Note 13: The LT3022 is tested and specified for this condition with an
external resistor divider (3.92k and 5.9k) setting V
resistor divider adds 50µA of load current. The specification refers to the
change in the 0.2V reference voltage, not the 0.5V output voltage.
Note 14: Input reverse leakage current flows out of the IN pin.
Note 15: Reverse output current is tested with IN grounded and OUT
forced to the rated output voltage. This current flows into the OUT pin and
out of the GND pin.
Note 16: Reverse current is higher for the case of
(rated_output) < V
circuitry is active in this region and is trying to restore the
output voltage to its nominal value.
T
T
600 700
J
J
= 125°C
= 25°C
206
204
194
202
200
198
196
800
–50
900
ADJ Pin Voltage
I
3022 G02
L
= 1mA
OUT
1000
–25
< V
IN
0
TEMPERATURE (°C)
, because the no-load recovery
300
270
240
210
180
150
120
90
60
30
25
0
–50
Dropout Voltage
V
OUT
50
–25
= 1.2V
75
0
TEMPERATURE (°C)
100
I
L
25
3022 G05
OUT
= 100mA
125
to 0.5V. The external
50
I
L
= 1A
I
75
L
= 500mA
I
L
= 10mA
100
3022 G03
3022f
125