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LT3028

3028f

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Dropout Voltage

ILOAD = 1mA

0.10

0.15

(Output 2)

ILOAD = 1mA

●

0.19

VIN2 = VOUT2(NOMINAL)

ILOAD = 10mA

0.17

0.22

(Notes 5, 6, 10)

ILOAD = 10mA

●

0.29

ILOAD = 50mA

0.24

0.31

ILOAD = 50mA

●

0.40

ILOAD = 100mA

0.30

0.35

ILOAD = 100mA

●

0.45

Dropout Voltage

ILOAD = 10mA

0.12

0.19

(Output 1)

ILOAD = 10mA

●

0.25

VIN1 = VOUT1(NOMINAL)

ILOAD = 50mA

0.17

0.22

(Notes 5, 6, 10)

ILOAD = 50mA

●

0.32

ILOAD = 100mA

0.21

0.28

ILOAD = 100mA

●

0.34

ILOAD = 500mA

0.32

0.37

ILOAD = 500mA

●

0.47

GND Pin Current

ILOAD = 0mA

●

µA

(Output 2)

ILOAD = 1mA

●

µA

VIN2 = VOUT2(NOMINAL)

ILOAD = 10mA

●

230

400

µA

(Notes 5, 7)

ILOAD = 50mA

●

ILOAD = 100mA

●

2.2

GND Pin Current

ILOAD = 0mA

●

µA

(Output 1)

ILOAD = 1mA

●

120

µA

VIN1 = VOUT1(NOMINAL)

ILOAD = 50mA

●

1.6

(Notes 5, 7)

ILOAD = 100mA

●

ILOAD = 250mA

●

ILOAD = 500mA

●

Output Voltage Noise

COUT = 10µF, CBYP = 0.01µF, ILOAD = Full Current,

µVRMS

BW = 10Hz to 100kHz

ADJ1/ADJ2 Pin Bias Current

ADJ1, ADJ2 (Notes 3, 8)

100

Shutdown Threshold

VOUT = Off to On

●

0.80

1.4

VOUT = On to Off

●

0.25

0.65

SHDN1/SHDN2 Pin Current

VSHDN1, VSHDN2 = 0V

●

0.5

µA

(Note 9)

VSHDN1, VSHDN2 = 20V

●

3.0

µA

Quiescent Current in Shutdown

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

0.01

0.1

µA

Ripple Rejection

VIN = 2.72V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz,

ILOAD = Full Current

Current Limit

Output 2, VIN2 = 7V, VOUT2 = 0V

500

VIN2 = 2.3V, ∆VOUT2 = – 0.1V

●

110

Output 1, VIN1 = 7V, VOUT1 = 0V

1.3

VIN1 = 2.3V, ∆VOUT1 = – 0.1V

●

520

Input Reverse Leakage Current

VIN = – 20V, VOUT = 0V

●

1mA

The

● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. (Note 2)

ELECTRICAL CHARACTERISTICS

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

of a device may be impaired.

Note 2: The LT3028 regulator is tested and specified under pulse load

conditions such that TJ ≈ TA. The LT3028E is guaranteed to meet

performance specifications from 0°C to 125°C junction temperature.

Specifications over the – 40°C to 125°C operating junction temperature

range are assured by design, characterization and correlation with

statistical process controls. The LT3028I is guaranteed and tested over the

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

Note 3: The LT3028 is tested and specified for these conditions with the

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

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