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IR3876MBF датащи(PDF) 5 Page - International Rectifier

номер детали IR3876MBF
подробное описание детали  12A HIGHLY INTEGRATED WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
PDF  20 Pages
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производитель  IRF [International Rectifier]
домашняя страница  http://www.irf.com
Logo IRF - International Rectifier

IR3876MBF датащи(HTML) 5 Page - International Rectifier

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IR3876MBF
Recommended Operating Conditions
Electrical Specifications
Unless otherwise specified, these specification apply over VIN = 12V, VCC = 5V, 0oC
≤ T
J ≤ 125
oC.
* Note: PHASE pin must not exceed 25V.
Symbol
Definition
Min
Max
Unit
VIN
Input Voltage
3
21*
V
VCC
Supply Voltage
4.5
7.5
V
OUT
Output Voltage
0.5
12
I
OUT
Output Current
0
12
A
Fs
Switching Frequency
N/A
1000
kHz
T
J
Junction Temperature
0
125
oC
PARAMETER
NOTE
TEST CONDITION
MIN
TYP
MAX
UNIT
BIAS SUPPLIES
VCC Turn-on Threshold
3.9
4.2
4.5
V
VCC Turn-off Threshold
3.6
3.9
4.2
V
VCC Threshold Hysteresis
150
mV
VCC Operating Current
R
FF = 200K,
EN = HIGH, Fs = 300kHz
9.2
mA
VCC Shutdown Current
EN = LOW
35
50
µA
FF Shutdown Current
EN = LOW
2
µA
VIN Shutdown Current
EN = LOW
1
µA
INTERNAL LDO OUTPUT
LDO Output Voltage Range
C
LDO = 1µF
3.1
3.3
3.5
V
Output Current
8
mA
CONTROL LOOP
Reference Accuracy, V
REF
V
REF
0.495
0.5
0.505
V
On-Time Accuracy
R
FF = 180K, TJ = 65
oC
280
300
320
ns
Min Off Time
1
400
ns
Soft-Start Current
EN = HIGH
8
10
12
µA
Zero Current Threshold
1
Measure at V
PHASE
-5
-2.4
0
mV
FAULT PROTECTION
ISET Pin Output Current
18
20
22
µA
Under Voltage Threshold
Falling V
FB & Monitor PGOOD
0.37
0.4
0.43
V
Under Voltage Hysteresis
1
Rising V
FB
10
mV
Over Voltage Threshold
Rising V
FB & Monitor PGOOD
0.58
0.62
0.66
V
Over Voltage Hysteresis
1
Falling V
FB
10
mV
PGOOD Delay Threshold
(V
SS)
1
V



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