ISL6721AV-T datasheet(3/23 Pages) RENESAS

Part #	ISL6721AV-T

Description	Flexible Single-Ended Current Mode PWM Controller

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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3 / 23 page

ISL6721

FN9110 Rev 9.00

Page 3 of 23

May 20, 2016

Functional Block Diagram

FIGURE 1. FUNCTIONAL BLOCK DIAGRAM

VREF

SS

12k

ON

30k

100k

5k

4.5k

20k

VCC

ISENSE

ISET

COMP

SS

OV

UV

GATE

SLOPE

VFB

PGND

VC

SYNC

RTCT

LGND

VREF

SOFT-START

CHARGE

CURRENT

FAULT

LATCH

PWM

COMPARATOR

SET DOMINANT

SS LOW

0.8

OVERCURRENT

SHUTDOWN

DELAY

SS CLAMP

2.5V

ENABLE

OC LATCH

SS LOW

COMPARATOR

VREF

UV COMPARATOR

4.65V

4.375V

1mA

4V

3.0V

1.5V

OSCILLATOR

COMPARATOR

70µA

3.0V

BLANKING

COMPARATOR

OC DETECT

SS CHARGED

+

-

START/STOP

UV COMPARATOR

VREF

5V

1%

+-

BG

+

-

100mV

+

S

0.1

53µA

+

-

ERROR

AMPLIFIER

+

-

1/3

VREF

+

-

ON

VREF

+

-

VREF

15µA

+

-

25µA

S

R

Q

+

-

270mV

S

R

Q

+

-

OVERCURRENT

COMPARATOR

100ns

BLANKING

+

-

START

+

-

VREF

+

-

2.50V

1.45V

BG

+

-

36k

+

-

2V

Q

50µs

RETRIGGERABLE

ONE SHOT

SYNC IN

SYNC OUT

EXT SYNC BLANKING

NO EXT SYNC

CLK OUT

BI-DIRECTIONAL

SYNCHRONIZATION

OSC IN

SS CHARGE

VOLTAGE CLAMP

THERMAL

PROTECTION

RESTART

DELAY

S

R

Q

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ISL6721AV-T Datasheet(PDF) 3 Page - Renesas Technology Corp

ISL6721AV-T Datasheet(HTML) 3 Page - Renesas Technology Corp

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