LT3029

3

3029fa

ELECTRICAL CHARACTERISTICS

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 LT3029 is tested and specified under pulse load conditions

of the LT3029E over the full –40°C to 125°C operating junction

temperature range is assured by design, characterization and correlation

with statistical process controls. The LT3029I is guaranteed over the full

–40°C to 125°C operating junction temperature range. The LT3029MP is

100% tested and guaranteed over the –55°C to 125°C operating junction

temperature range. The LT3029H is tested at 150°C operating junction

temperature. High junction temperatures degrade operating lifetimes.

Operating lifetime is derated at junction temperatures greater than 125°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage (Notes 3, 11)

l

1.8

2.3

V

ADJ1, ADJ2 Pin Voltage (Notes 3, 4, 9)

l

l

1.203

1.191

1.173

1.215

1.215

1.215

1.227

1.239

1.239

V

V

V

Line Regulation (Note 3)

l

0.5

5

mV

Load Regulation (Note 3)

l

l

2.5

6

15

32

mV

mV

mV

Dropout Voltage

(Notes 5, 6, 11)

l

0.11

0.18

0.25

V

V

l

0.16

0.22

0.31

V

V

l

0.2

0.25

0.34

V

V

l

0.3

0.36

0.46

V

V

GND Pin Current (per Channel)

(Notes 5, 7)

l

l

l

l

l

l

55

90

1.1

2

4.3

10

150

250

2

3.5

8

16

μA

μA

mA

mA

mA

mA

Output Voltage Noise

BW = 10Hz to 100kHz

20

ADJ1/ADJ2 Pin Bias Current

ADJ1, ADJ2 (Notes 3, 8)

30

100

nA

Shutdown Threshold

l

l

0.20

0.45

0.40

1.1

V

V

SHDN1/SHDN2 Pin Current (Note 10)

l

l

0

0.6

0.5

3

μA

μA

Quiescent Current in Shutdown (per Channel)

0.01

0.1

μA

Ripple Rejection

55

67

dB

Current Limit (Note 9)

l

520

1.5

A

mA

Input Reverse Leakage Current

l

1mA

Reverse Output Current

0.5

10

μA

The

Note 3: The LT3029 is tested and specified for these conditions with the

ADJ1/ADJ2 pin connected to the corresponding OUT1/OUT2 pin.

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. When operating at

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

maximum output current, limit the input voltage range.

Note 5: To satisfy minimum input voltage requirements, the LT3029 is

tested and specified for these conditions with an external resistor divider

(two 243k resistors) for an output voltage of 2.437V. The external resistor

divider adds 5μA of DC load on the output.

Note 6: Dropout voltage is the minimum input to output voltage differential

needed to maintain regulation at a specified output current. In dropout, the