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LT3020/LT3020-1.2/

LT3020-1.5/LT3020-1.8

sn3020 3020fas

Current Limit (Note 12)

VIN = 10V, VOUT = 0V

360

VIN = VOUT(NOMINAL) + 0.5V, ∆VOUT = –5%

●

110

310

Input Reverse Leakage Current

VIN = –10V, VOUT = 0V

µA

Reverse Output Current

VOUT = 1.2V, VIN = 0V

µA

(Notes 11, 13)

LT3020-1.2

VOUT = 1.2V, VIN = 0V

µA

LT3020-1.5

VOUT = 1.5V, VIN = 0V

µA

LT3020-1.8

VOUT = 1.8V, VIN = 0V

µA

The

● denotes specifications which apply over the full operating temperature range, otherwise specifications are TJ = 25°C.

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LT3020 regulators are tested and specified under pulse load

conditions such that TJ ≈ TA. The LT3020 is 100% production tested at

TA = 25°C. Performance at –40°C and 125°C is assured by design,

characterization and correlation with statistical process controls.

Note 3: This IC includes overtemperature protection that is intended to

protect the device during momentary overload conditions. Junction

temperature will exceed 125°C when overtemperature protection is active.

Continuous operation above the specified maximum operating junction

temperature may impair device reliability.

Note 4: Maximum junction temperature limits operating conditions. The

regulated output voltage specification does not apply for all possible

combinations of input voltage and output current. Limit the output current

range if operating at maximum input voltage. Limit the input voltage range

if operating at maximum output current.

Note 5: Typically the LT3020 supplies 100mA output current with a 1V

input supply. The guaranteed minimum input voltage for 100mA output

current is 1.10V.

Note 6: The LT3020 is tested and specified for these conditions with an

external resistor divider (20k and 30.1k) setting VOUT to 0.5V. The external

resistor divider adds 10µA of output load current. The line regulation and

load regulation specifications refer to the change in the 0.2V reference

voltage, not the 0.5V output voltage. Specifications for fixed output voltage

devices are referred to the output voltage.

Note 7: 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 8: GND pin current is tested with VIN = VOUT(NOMINAL) and a current

source load. The device is tested while operating in its dropout region.

This condition forces the worst-case GND pin current. GND pin current

decreases at higher input voltages.

Note 9: Adjust pin bias current flows out of the ADJ pin.

Note 10: Shutdown pin current flows into the SHDN pin.

Note 11: 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. For fixed voltage devices this includes the current in

the output resistor divider.

Note 12: The LT3020 is tested and specified for these conditions with an

external resistor divider (20k and 100k) setting VOUT to 1.2V. The external

resistor divider adds 10µA of load current.

Note 13: 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.

Note 14: Minimum input voltage is the minimum voltage required by the

control circuit to regulate the output voltage and supply the full 100mA

rated current. This specification is tested at VOUT = 0.5V. At higher output

voltages the minimum input voltage required for regulation will be equal to

the regulated output voltage VOUT plus the dropout voltage.

TYPICAL PERFOR A CE CHARACTERISTICS

Typical Dropout Voltage

Dropout Voltage

Quiescent Current

OUTPUT CURRENT (mA)

250

225

200

150

175

125

100

3020 G01

100

TJ = 125°C

TJ = 25°C

TEMPERATURE (°C)

–50

250

225

200

150

175

125

100

3020 G02

–25

125

100

IL = 1mA

IL = 100mA

IL = 50mA

IL = 10mA

VOUT = 1.2V

TEMPERATURE (°C)

–50

250

225

200

150

175

125

100

3020 G03

–25

125

100

VSHDN = VIN

VSHDN = 0V

VIN = 6V

VOUT = 1.2V

IL = 0

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