LT3032 Series

5

3032fd

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LT3032 is tested and specified under pulse load conditions

of the LT3032E over the full –40°C to 125°C operating junction

temperature range is assured by design, characterization, and correlation

with statistical process controls. The LT3032I regulators are guaranteed

over the full –40°C to 125°C operating junction temperature range.

Note 3: Parasitic diodes exist internally between the INN pin and the OUTN,

ADJN, and SHDNN pins. These pins cannot be pulled more than 0.5V

below the INN pin during fault conditions, and must remain at a voltage

more positive than the INN pin during operation.

Note 4: Operating conditions are limited by maximum junction

temperature. Specifications do not apply for all possible combinations of

input voltages and output currents. When operating at maximum input

voltages, the output current ranges must be limited. When operating at

maximum output currents, the input voltage ranges must be limited.

Note 5: The LT3032 is tested and specified for these conditions with the

ADJP pin tied to the OUTP pin and the ADJN pin tied to the OUTN pin.

Note 6: To satisfy requirements for minimum input voltage, the LT3032 is

tested and specified for these conditions with an external resistor divider

(two 250k resistors) from OUTP/OUTN to the corresponding ADJP/ADJN

pin to give an output voltage of ±2.44V. The external resistor divider adds a

5μA DC load on the output. The LT3032-12/LT3032-15 have higher internal

resistor divider current, resulting in higher GND pin current at light/no load.

Note 7: Dropout voltage is the minimum input-to-output voltage

differential needed to maintain regulation at a specified output current. In

dropout, output voltage equals:

For lower output voltages, dropout voltage is limited by the minimum

input voltage specification under some output voltage/load conditions;

see curves for Minimum INN Voltage and Minimum INP Voltage in Typical

Performance Characteristics. LTC is unable to guarantee Maximum

Dropout Voltage specifications at 50mA and 150mA due to production

test limitations with Kelvin-Sensing the package pins. Please consult the

Typical Performance Characteristics for curves of Dropout Voltage as a

function of Output Load Current and Temperature.

while operating in its dropout region. This is the worst-case GND pin

current. GND pin current decreases slightly at higher input voltages.

Note 9: Positive current flow is into the pin. Negative current flow is out of

the pin.

Note 10: For input-to-output differential voltages from INN to OUTN

greater than –7V, a –50μA load is needed to maintain regulation.

Note 11: Reverse output current is tested with the INP pin grounded and

the OUTP pin forced to the nominal output voltage. This current flows into

the OUTP pin and out the GND pin.

negative).

Note 13: LTC is unable to guarantee load regulation specifications on

fixed voltage versions of the LT3032 due to production test limitations

with Kelvin-Sensing the package pins. Please consult the Typical

Performance Characteristics for curves of Load Regulation as a function of

Temperature.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Output Voltage Noise (10Hz to 100kHz)

20

30

Ripple Rejection

50

46

68

54

dB

dB

Current Limit (Note 12)

l

l

170

170

400

350

mA

mA

mA

mA

INP Reverse Leakage Current

l

–1

mA

INN Reverse Leakage Current

l

1mA

Reverse Output Current

(Notes 5, 11)

LT3032-5

LT3032-12

LT3032-15

LT3032

10

25

25

5

20

50

50

10

μA

μA

μA

μA