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LT3022

3022f

elecTrical characTerisTics

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: (VIN – VDROPOUT).

Note 9: The LT3022 is tested and specified for these conditions with

an external resistor divider (3.92k and 19.6k) setting VOUT to 1.2V. The

external resistor divider adds 50µA of load current.

Note 10: GND pin current is tested with VIN = VOUT(NOMINAL) + 0.4V and a

current source load. GND pin current increases in dropout. See GND pin

current curves in the Typical Performance Characteristics section.

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 VOUT to 0.5V. The external

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) < VOUT < VIN, because the no-load recovery

circuitry is active in this region and is trying to restore the

output voltage to its nominal value.

Typical perForMance characTerisTics

Minimum Input Voltage

ADJ Pin Voltage

Dropout Voltage

Guaranteed Dropout Voltage

Dropout Voltage

OUTPUT CURRENT (mA)

180

240

300

800

3022 G01

120

150

210

270

200

100

400

300

600 700

900

500

1000

TJ = 125°C

VOUT = 1.2V

TJ = –40°C

TJ = 25°C

OUTPUT CURRENT (mA)

180

240

300

800

3022 G02

120

150

210

270

200

100

400

300

600 700

900

500

1000

TJ = 125°C

TJ = 25°C

= TEST POINTS

TEMPERATURE (°C)

–50

120

150

300

210

3022 G03

240

270

180

–25

100 125

VOUT = 1.2V

IL = 1A

IL = 500mA

IL = 100mA

IL = 10mA

TEMPERATURE (°C)

–50

0.3

0.9

1.0

1.1

3022 G04

0.1

0.7

0.5

0.2

0.8

0.6

0.4

–25

100 125

IL = 1A

TEMPERATURE (°C)

–50

202

204

206

3022 G05

200

198

–25

100

125

196

194

IL = 1mA

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