IR3831MPBF datasheet(5/31 Pages) IRF

5 / 31 page

11/05/10

IR3831MPbF

Recommended Operating Conditions

Parameter

Symbol

Test Condition

Min

TYP

MAX

Units

Power Loss

Ploss

Vcc=5V, Vin=12V, Vo=0.75V, Io=8A,

Fs=400kHz, L=0.6uH, Note4

1.28

MOSFET Rds(on)

Top Switch

Rds(on)_Top

VBoot -Vsw =5V, ID=10A, Tj=25

16.7

Bottom Switch

Rds(on)_Bot

Vcc=5V, ID=10A, Tj=25

8.7

Supply Current

VCC Supply Current (Standby)

ICC(Standby)

SS=0V, No Switching, Enable low

500

μA

Vcc Supply Current (Dyn)

ICC(Dyn)

SS=3V, Vcc=5V, Fs=500kHz

Enable high

Under Voltage Lockout

VCC-Start-Threshold

VCC_UVLO_Start

Vcc Rising Trip Level

4.06

4.26

4.46

VCC-Stop-Threshold

VCC_UVLO_Stop

Vcc Falling Trip Level

3.76

3.96

4.16

VCC-Hysteresis

Vcc-Hys

Supply ramping up and down

0.25

0.3

0.38

Enable-Start-Threshold

Enable_UVLO_Start

Supply ramping up

1.14

1.2

1.36

Enable-Stop-Threshold

Enable_UVLO_Stop

Supply ramping down

0.9

1.0

1.06

Enable-Hysteresis

Enable_Hys

Supply ramping up and down

0.16

0.2

0.24

Enable leakage current

Ien

Enable=3.3V

μA

Electrical Specifications

Unless otherwise specified, these specification apply over 4.5V< V

cc<5.5V, Vp=0.6V, Vin=12V,

0oC<T

j< 125

oC. Typical values are specified at T

a = 25

oC.

Symbol

Definition

Min

Max

Units

Vin

Input Voltage

1.0

Vcc

Supply Voltage

4.5

5.5

Boot to SW

Supply Voltage

4.5

5.5

Output Voltage

0.6

0.90*Vin

Output Current

Switching Frequency

225

1650

kHz

Junction Temperature

-40

125

IR3831MPBF Datasheet(PDF) 5 Page - International Rectifier

IR3831MPBF Datasheet(HTML) 5 Page - International Rectifier

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Datasheet Download

Link URL