LT3973/LT3973-3.3/LT3973-5

3

3973fb

For more information www.linear.com/LT3973

l

denotes the specifications which apply over the full operating

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage (Note 3)

l

3.8

4.2

V

l

l

0.75

1.8

1.3

2.8

6

12

µA

µA

µA

µA

LT3973 Feedback Voltage

l

1.195

1.185

1.21

1.21

1.225

1.235

V

V

LT3973-3.3 Output Voltage

l

3.26

3.234

3.3

3.3

3.34

3.366

V

V

LT3973-5 Output Voltage

l

4.94

4.9

5

5

5.06

5.1

V

V

LT3973 FB Pin Bias Current

l

0.1

20

nA

FB/Output Voltage Line Regulation

0.0002

0.01

%/V

Switching Frequency

1.72

632

156

2.15

790

195

2.58

948

234

MHz

kHz

kHz

Switch Current Limit

l

1.237

1.65

1.98

A

Catch Schottky Current Limit

l

0.92

1.15

1.44

A

250

mV

Switch Leakage Current

0.05

2

µA

Catch Schottky Forward Voltage

550

mV

Catch Schottky Reverse Leakage

0.05

2

µA

Boost Schottky Forward Voltage

820

mV

Boost Schottky Reverse Leakage

0.02

2

µA

Minimum Boost Voltage (Note 4)

l

1.4

1.8

V

BOOST Pin Current

10

13

mA

Dropout Comparator Threshold

l

400

490

580

mV

Dropout Comparator Hysteresis

40

mV

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3973EDD-5#PBF

LT3973EDD-5#TRPBF

LGGF

10-Lead (3mm × 3mm) Plastic DFN

–40°C to 125°C

LT3973IDD-5#PBF

LT3973IDD-5#TRPBF

LGGF

10-Lead (3mm × 3mm) Plastic DFN

–40°C to 125°C

LT3973HDD-5#PBF

LT3973HDD-5#TRPBF

LGGF

10-Lead (3mm × 3mm) Plastic DFN

–40°C to 150°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping

container.Consult LTC Marketing for information on non-standard lead based finish parts.

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