IR3621M datasheet(4/29 Pages) IRF

Part #	IR3621M

Description	2-PHASE / DUAL SYNCHRONOUS PWM CONTROLLER WITH OSCILLATOR SYNCHRONIZATION AND PRE-BIAS STARTUP

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Manufacturer	IRF [International Rectifier]

Direct Link	http://www.irf.com

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IR3621&(PbF)

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PARAMETER

SYMBOL

TEST CONDITION

MIN

TYP

MAX

UNITS

VOUT3 Internal Regulator

Output Voltage

Output Current

Protection Section

OVP Trip Threshold

OVP Fault Prop Delay

OCSET Current

Hiccup Duty Cycle

Hiccup High Level Threshold

Hiccup Low Level Threshold

Thermal Shutdown Trip Point

Thermal Shutdown Hysteresis

Output Drivers Section

LO Drive Rise Time

HI Drive Rise Time

LO Drive Fall Time

Hi Drive Fall Time

Dead Band Time

Output forced to 1.25VREF

Note2

Hiccup pin pulled high, Note2

Note2

CL=1500pF,Figure 2

CL=1500pF, Figure 2

CL=1500pF,Figure 2

See Figure 2

6.25

1.15VREF

20

5

140

20

18

25

50

V

mA

V

µs

µA

%

V

!C

ns

OVP

OVP(delay)

IOCSet

Tr(LO)

Tr(HI)

Tf(LO)

Tf(HI)

TDB

5.8

44

1.1VREF

16

2

6.7

1.2VREF

5

24

0.8

50

100

Note 2: Guaranteed by design but not tested for production.

Figure 2 - Rise Time, Fall Time and Deadband for Driver Section

9V

2V

9V

2V

High Side Driver

(HDrv)

Low Side Driver

(LDrv)

Tr

Tf

Deadband

H_to_L

Deadband

L_to_H

Tr

Tf

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IR3621M Datasheet(PDF) 4 Page - International Rectifier

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