IR3863MPBF
Recommended Operating Conditions
Symbol
VIN
VCC
V OUT
I OUT
Fs
T J
Definition
Input Voltage
Supply Voltage
Output Voltage
Output Current
Switching Frequency
Junction Temperature
Min
3
4.5
0.5
0
N/A
-40
Max
21*
5.5
12
6
750
125
Unit
V
A
kHz
o C
* PHASE pin must not exceed 25V.
Electrical Specifications
Unless otherwise specified, these specification apply over VIN = 12V, 4.5V<VCC<5.5V, 0 o C ≤ T J ≤ 125 o C.
PARAMETER
NOTE
TEST CONDITION
MIN
TYP
MAX
UNIT
CONTROL LOOP
Reference Accuracy, V REF
On-Time Accuracy
V FB = 0.5V
R FF = 180K, T J = 65 o C
0.495
280
0.5
300
0.505
320
V
ns
Min Off Time
500
ns
Soft-Start Current
DCM Comparator Offset
EN = High
Measure at V PHASE
8
-4.5
10
-2.5
12
0
μA
mV
SUPPLY CURRENT
VCC Supply Current
EN = Low, No Switching
23
μA
(standby)
VCC Supply Current
EN = High, Fs = 300kHz
6
mA
(dynamic)
FF Shutdown Current
EN = Low
2
μA
FORCED CONTINUOUS CONDUCTION MODE (FCCM)
FCCM Start Threshold
FCCM Stop Threshold
8/8/2012 Rev3.2
2
0.6
V
V
5
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