LT3512_11 datasheet(2/24 Pages) LINER

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LT3512

3512f

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

SW (Note 4) ............................................................150V

VIN, EN/UVLO..........................................................100V

RFB............................................................100V, VIN ±6V

BIAS...................................................................VIN, 20V

RREF,TC, VC .................................................................6V

Operating Junction Temperature Range (Note 2)

LT3512E, LT3512I .............................. –40°C to 125°C

LT3512H ............................................ –40°C to 150°C

Storage Temperature Range .................. –65°C to 150°C

(Note 1)

EN/UVLO

VIN

GND

BIAS

GND

RFB

RREF

GND

TOP VIEW

MS PACKAGE

16(12)-LEAD PLASTIC MSOP

θJA = 90°C/W

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3512EMS#PBF

LT3512EMS#TRPBF

3512

16-Lead Plastic MSOP

–40°C to 125°C

LT3512IMS#PBF

LT3512IMS#TRPBF

3512

16-Lead Plastic MSOP

–40°C to 125°C

LT3512HMS#PBF

LT3512HMS#TRPBF

3512

16-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.

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/

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

VIN = BIAS

4.5

100

Quiescent Current

Not Switching

VEN/UVLO = 0.2V

3.5

4.5

μA

EN/UVLO Pin Threshold

EN/UVLO Pin Voltage Rising

1.15

1.21

1.27

EN/UVLO Pin Current

VEN/UVLO =1.1V

VEN/UVLO =1.4V

2.0

2.6

3.3

μA

Maximum Switching Frequency

650

kHz

Minimum Switching Frequency

kHz

Maximum Current Limit

420

600

800

Minimum Current Limit

120

150

Switch VCESAT

ISW = 200mA

0.5

RREF Voltage

1.18

1.17

1.20

1.215

1.23

RREF Voltage Line Regulation

6V < VIN < 100V

0.01

0.03

%/V

RREF Pin Bias Current

(Note 3)

400

Error Amplifier Voltage Gain

150

V/V

Error Amplifier Transconductance

∆I = 2μA

140

μmhos

The

l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 24V unless otherwise noted.

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