IR3082MPBF datasheet(4/33 Pages) IRF

4 / 33 page

IR3082P

Page 4 of 33

01/31/05

Note 1: Guaranteed by design, but not tested in production

Note 2: VDAC Output is trimmed to compensate for Error Amp input offsets errors

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

Soft Start and Delay

Start Delay (See Fig 10)

1.2

1.9

2.6

Soft Start Time (See Fig 10)

VID = 1.3V (VID4-0 = 01010)

0.85

1.95

3.0

PWRGD Delay (See Fig 10)

VID = 1.3V (VID4-0 = 01010)

1.0

2.0

3.0

OC Delay Time

150

250

350

SS/DEL to FB Input Offset

Voltage

With FB = 0V, adjust V(SS/DEL) until

EAOUT drives high

0.95

1.3

1.6

Charge Current

100

µA

Discharge Current

µA

Charge/Discharge Current

Ratio

9.5

12.5

µA/µA

OC Discharge Current

Note 1

µA

Charge Voltage

3.65

3.9

4.15

Delay Comparator Threshold

Relative to Charge Voltage, SS/DEL

rising

Delay Comparator Threshold

Relative to Charge Voltage, SS/DEL

falling

115

145

Delay Comparator Hysteresis

Discharge Comparator

Threshold

175

225

275

Over-Current Comparator

Input Offset Voltage

-10

OCSET Bias Current

-54

-51.5

-49

µA

PWRGD Output

Output Voltage

I(PWRGD) = 4mA

150

300

Leakage Current

V(PWRGD) = 5.5V

µA

Oscillator

Switching Frequency

450

500

550

kHz

Peak Voltage (5V typical,

measured as % of VBIAS)

Valley Voltage (1V typical,

measured as % of VBIAS)

VCC Under-Voltage Lockout

Start Threshold

9.0

9.75

10.4

Stop Threshold

8.4

9.0

9.6

Hysteresis

Start – Stop

550

750

1150

General

VCC Supply Current

12.5

VOSNS- Current

-0.3V ≤ VOSNS- ≤ 0.3V, All VID Codes

-4.5

-3.5

-2.5

IR3082MPBF Datasheet(PDF) 4 Page - International Rectifier

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