IR3081 View Datasheet(PDF) - International Rectifier
Part Name
Description
Manufacturer
IR3081 Datasheet PDF : 20 Pages
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IR3081
PARAMETER
TEST CONDITION
MIN TYP MAX UNIT
Oscillator
Switching Frequency
RROSC = 41.9kΩ
255 300 345 kHz
Peak Voltage (5V typical,
measured as % of VBIAS)
RROSC = 41.9kΩ
70
71
74
%
Valley Voltage (1V typical,
measured as % of VBIAS)
RROSC = 41.9kΩ
11
14
16
%
VBIAS Regulator
Output Voltage
0 ≤ I(VBIAS) ≤ 5mA
6.5
6.8
7.1
V
Current Limit
6
15
30
mA
Soft Start and Delay
SS/DEL to FB Input Offset
With FB = 0V, adjust V(SS/DEL) until
0.85 1.3
1.5
V
Voltage
EAOUT drives high
Charge Current
40
70
100
µA
Discharge Current
4
6
9
µA
Charge/Discharge Current
Ratio
10 11.5 13 µA/µA
Charge Voltage
3.7
4.0
4.2
V
Delay Comparator Threshold Relative to Charge Voltage
70
90
110
mV
Discharge Comparator
Threshold
150 200 250 mV
Over-Current Comparator
Input Offset Voltage
1V ≤ V(OCSET) ≤ 5V
-10
0
10
mV
OCSET Bias Current
RROSC = 41.9kΩ
28 29.5 31
µA
PWRGD Output
Output Voltage
I(PWRGD) = 4mA
150 400 mV
Leakage Current
V(PWRGD) = 5.5V
0
10
µA
Enable Input
Threshold voltage
500 600 700 mV
Bias Current
0V ≤ V(ENABLE) ≤ VCC
-5
0
5
µA
VCC Under-Voltage Lockout
Start Threshold
8.6
9.1
9.6
V
Stop Threshold
8.4
8.9
9.4
V
Hysteresis
Start – Stop
150 200 300 mV
General
VCC Supply Current
8
11
14
mA
VOSNS- Current
-0.3V ≤ VOSNS- ≤ 0.3V, All VID Codes
3.5
4.5
5.5
mA
Note 1: Guaranteed by design, but not tested in production
Note 2: VDAC Output is trimmed to compensate for Error Amp input offsets errors
Page 4 of 20
9/1/03
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