LT3752 datasheet(15/52 Pages) AD

15 / 52 page

LT3752/LT3752-1

Rev. C

For more information www.analog.com

BLOCK DIAGRAM

PART

SYSTEM INPUT MAX

VIN PIN MAX

VIN ON/OFF

INTVCC

UVLO(+)/(REG)

AOUT PHASING

LT3752

100V

5.8V/5.5V

4.75V/7V

for External PMOS

LT3752-1

Limited Only by

External Components

16V, 8mA

(Internal VIN Clamp)

9.5V/7.6V

7V/10V

for External NMOS

1.25V

–

1.25V (+)

1.215V (–)

EN_SS1

UVLO_VSEC

PGOOD

HISLP

OUT

0.4V

5µA

0.9mA

SS1 > 1.25V

HARD STOP

VIN_ON

VIN_OFF

VIN

SOFT STOP

SS1 < 150mV

20µA (1 SHOT)

UVLO_VSEC

HFB

1.0V

1.25V

HCOMP

HOUSEKEEPING CONTROLLER

HISENSE

79mV

CLAMP

HOUT

VIN

OVLO

IVSEC

SYNC

100k

SS2

SS1

COMP

TAO

TAS

TOS

TBLNK GND

(+ EXPOSED

PAD PIN 39)

(+ EXPOSED

PAD PIN 39)

PGND (19, 38)

–

1.25V

REF

–

HSS

HISLP

HICCUP

98mV

±0.7A

±0.4A

±2A

1.25V

–

OSC

FOLD

BACK

ISLP

1.25V

150mV

HARD STOP

SOFT

START

SS2

1.25V

SS1

EN_SS1

→220)mV

SOFT

STOP

SS1 > 2.2V

VSEC

CLAMP

TIMING

LOGIC

SS1 < 1.25V

TJ > 170°C

INTVCC_OV

INTVCC_UV

–

INTVCC

AOUT

OFF

96mV

OFF

ACTIVE CLAMP CONTROL

SYNCHRONOUS CONTROL

MAIN SWITCH

SOUT

OUT

ISENSEP

ISENSEN

3752 BD

BLANK

ISLP

HICCUP

(INVERT LEVEL FOR LT3752-1)

CONTROL

LT3752 Datasheet(PDF) 15 Page - Analog Devices

LT3752 Datasheet(HTML) 15 Page - Analog Devices

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