LT3663 datasheet(3/16 Pages) LINER

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LT3663

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For more information For more information www.linear.com/LT3663

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: Absolute Maximum Voltage at VIN and RUN pins is 60V for

nonrepetitive 1 second transients.

Note 3: The LT3663E is guaranteed to meet performance specifications

from 0°C to 125°C. Specifications over the –40°C to 125°C operating

temperature range are assured by design, characterization, and

correlation with statistical process controls. The LT3663I specifications

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, RILIM = 36.5k unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN Undervoltage Lockout

Rising

7.5

VIN Undervoltage Lockout Hysteresis

500

VIN Overvoltage Lockout

Rising

VIN Overvoltage Lockout Hysteresis

VIN Supply Current

Not Switching

2.4

3.2

VIN Supply Current in Shutdown

VRUN = 0V

0.01

µA

Run Input Voltage High

2.5

Run Input Voltage Low

0.3

Run Pin Bias Current

VRUN = 2.3V (Note4)

VRUN = 0V

0.01

0.1

µA

VOUT Current Limit Range

0.4

1.2

VOUT Current Limit

0.8

1.2

Operating Frequency

LT3663

LT3663-X

1350

900

1500

1000

1650

1100

kHz

Maximum Duty Cycle

Feedback Voltage

LT3663

784

800

816

FB Bias Current

VFB = 0.8V, LT3663

150

Regulated Output Voltage

LT3663-3.3

LT3663-5

3.234

4.900

3.3

3.366

5.100

VOUTS Bias Current

LT3663-X

120

µA

Switch Peak Current Limit

(Note 5)

1.6

2.5

Switch VCESAT

ISW = 1A

275

Minimum BOOST Voltage

ISW = 1A (Note 6)

1.85

2.2

Boost Diode Drop

IDIODE = 60mA

0.9

1.2

Boost Pin Current

ISW = 1A

are guaranteed over the full –40°C to 125°C temperature range. The

LT3663H specifications are guaranteed over the –40°C to 150°C operating

temperature range. High junction temperatures degrade operating

lifetimes. Operating lifetime is derated at junction temperatures greater

than 125°C.

Note 4: Current flows into pin.

Note 5: Switch Peak Current Limit guaranteed by design and/or correlation

to static test.

Note 6: This is the minimum voltage across the boost capacitor needed to

guarantee full saturation of the switch.

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3663IMS8E-5#PBF

LT3663IMS8E-5#TRPBF

LTFMZ

8-Lead Plastic MSOP

–40°C to 125°C

LT3663HMS8E-5#PBF

LT3663HMS8E-5#TRPBF

LTFMZ

8-Lead Plastic MSOP

–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.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/

orDer inForMaTion

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