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LT3029

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

such that TJ ≈ TA. The LT3029E is 100% tested at TA = 25°C. Performance

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)

ILOAD = 500mA

1.8

2.3

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

VIN = 2V, ILOAD = 1mA

2.3V < VIN < 20V, 1mA < ILOAD < 500mA (E, I, MP)

2.3V < VIN < 20V, 1mA < ILOAD < 500mA (H)

1.203

1.191

1.173

1.215

1.227

1.239

Line Regulation (Note 3)

ΔVIN = 2V to 20V, ILOAD = 1mA

0.5

Load Regulation (Note 3)

VIN = 2.3V, ΔILOAD = 1mA to 500mA

VIN = 2.3V, ΔILOAD = 1mA to 500mA (E, I, MP)

VIN = 2.3V, ΔILOAD = 1mA to 500mA (H)

2.5

Dropout Voltage

VIN = VOUT(NOMINAL)

(Notes 5, 6, 11)

ILOAD = 10mA

0.11

0.18

0.25

ILOAD = 50mA

0.16

0.22

0.31

ILOAD = 100mA

0.2

0.25

0.34

ILOAD = 500mA

0.3

0.36

0.46

GND Pin Current (per Channel)

VIN = VOUT(NOMINAL)

(Notes 5, 7)

ILOAD = 0mA

ILOAD = 1mA

ILOAD = 50mA

ILOAD = 100mA

ILOAD = 250mA

ILOAD = 500mA

1.1

4.3

150

250

3.5

μA

Output Voltage Noise

COUT = 10μF, CBYP = 10nF, ILOAD = 500mA,

BW = 10Hz to 100kHz

μVRMS

ADJ1/ADJ2 Pin Bias Current

ADJ1, ADJ2 (Notes 3, 8)

100

Shutdown Threshold

VOUT = Off to On

VOUT = On to Off

0.20

0.45

0.40

1.1

SHDN1/SHDN2 Pin Current (Note 10)

VSHDN1, VSHDN2 = 0V

VSHDN1, VSHDN2 = 20V

0.6

0.5

μA

Quiescent Current in Shutdown (per Channel)

VIN = 6V, VSHDN1 = 0V, VSHDN2 = 0V

0.01

0.1

μA

Ripple Rejection

VIN = 2.715V (Avg), VRIPPLE = 0.5VP-P,

fRIPPLE = 120Hz, ILOAD = 500mA

Current Limit (Note 9)

VIN = 7V, VOUT = 0V

VIN = 2.3V, ΔVOUT = –0.1V

520

1.5

Input Reverse Leakage Current

VIN = –20V, VOUT = 0V

1mA

Reverse Output Current

VOUT = 1.215V, VIN = 0V

0.5

μA

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. (Note 2)

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

output voltage equals: VIN – VDROPOUT.

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