LT3015

4

3015f

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 LT3015 is tested and specified for these conditions with the

ADJ pin connected to the OUT pin.

Note 3. Maximum junction temperature limits operating conditions. The

regulated output voltage specification does not apply for all possible

combinations of input voltage and output current. If operating at maximum

output current, limit the input voltage range. If operating at maximum

input voltage, limit the output current range.

Note 4. To satisfy minimum input voltage requirements, the LT3015 is

tested and specified for these conditions with an external resistor divider

(54.9k top, 49.9k bottom) for an output voltage of –2.56V. The external

resistor adds 25μA of DC load on the output.

Note 5. Dropout voltage is the minimum input-to-output voltage

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

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Dropout Voltage

(Notes 4, 5)

l

l

l

l

l

l

0.055

0.1

0.17

0.2

0.31

0.41

0.095

0.16

0.16

0.24

0.23

0.32

0.27

0.39

0.39

0.5

0.51

0.68

V

V

V

V

V

V

V

V

V

V

V

V

GND Pin Current

(Notes 4, 6)

l

l

l

l

l

1.1

1.15

2.9

9.5

35

2.4

2.5

7.0

23

70

mA

mA

mA

mA

mA

Output Voltage Noise

60

ADJ Pin Bias Current

(Notes 2, 7)

–200

30

200

nA

Shutdown Threshold (Note 11)

l

l

l

l

1.07

–1.34

0.5

1.21

–1.20

0.73

–0.73

1.35

–1.06

–0.5

V

V

V

V

SHDN Pin Current (Note 8)

l

l

l

–1.0

0

17

–2.8

10

27

–4.5

μA

μA

μA

Quiescent Current in Shutdown

l

0.01

6

μA

Ripple Rejection

55

65

dB

Current Limit

l

l

1.8

1.75

2.0

1.95

2.2

2.15

A

A

Input Reverse Leakage Current

l

1.55

1.7

mA

source load. Therefore, the device is tested while operating in dropout.

This is the worst-case GND pin current. GND pin current decreases slightly

at higher input voltages.

Note 7. Positive ADJ pin bias current flows into the ADJ pin.

Note 8. Positive SHDN pin current flows into the SHDN pin.

Note 9. The LT3015 is tested and specified under pulsed load conditions

specifications from 0°C to 125°C junction temperature. Specifications over

the –40°C to 125°C operating temperature range are assured by design,

characterization, and correlation with statistical process controls. The

LT3015I is guaranteed over the full –40°C to 125°C operating junction

temperature range. The LT3015MP is 100% tested and guaranteed over

the full –55°C to 125°C operating junction temperature range.

Note 10. Parasitic diodes exist internally between the OUT, ADJ, SHDN pins

and the IN pin. Do not drive the OUT, ADJ, and SHDN pins more that 0.3V

below the IN pin during fault conditions, and these pins must remain at a

voltage more positive than IN during normal operation.

Note 11. The SHDN threshold must be met to ensure device operation.