IR3846 データシートの表示（PDF） - International Rectifier

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IR3846

Single-Input Voltage, Synchronous Buck Regulator 35A Highly Integrated SupIRBuck®

International Rectifier 

IR3846

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNIT

Tracker Comparator

Upper Threshold

VPG(tracker_upper) Vp Rising, Vref < 0.1V

0.4

V

Tracker Comparator

Lower Threshold

VPG(tracker_lower) Vp Falling, Vref < 0.1V

0.3

V

Tracker Comparator

Delay

Tdelay(tracker)

Vp Rising, Vref < 0.1V

1.28

ms

Over Voltage Protection (OVP)

OVP Trip Threshold

OVP (trip)

Vsns Rising,

0.45V < Vref < 1.2V

Vsns Rising,

Vref < 0.1V

115 120 125 % Vref

115 120 125 % Vp

OVP Fault Prop Delay

OVP (delay)

Vsns rising

1.5 2.5 3.5

µs

Over-Current Protection

OCSet=VCC, VCC =

6.8V, TJ = 25°C

41 44.4 48

A

OC Trip Current

ITRIP

OCSet=floating, VCC

= 6.8V, TJ = 25°C

32

35 38

A

OCSet=PGnd, VCC

=6.8V, TJ = 25°C

24 26.88 30

A

Hiccup blanking time

Tblk_Hiccup

Note 4

20.48

ms

Thermal Shutdown

Thermal Shutdown

Note 4

145

°C

Hysteresis

Note 4

20

°C

Notes:

4. Guaranteed by design but not tested in production.

10 www.irf.com © 2013 International Rectifier

August 01, 2013

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