参数资料
型号: IRDC3871
厂商: International Rectifier
文件页数: 5/21页
文件大小: 0K
描述: BOARD EVAL FOR IRDC3871
标准包装: 1
系列: SupIRBuck™
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 1.05V
电流 - 输出: 8A
输入电压: 12V
稳压器拓扑结构: 降压
频率 - 开关: 300kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: IR3871
IR3871MPBF
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
0
Max
26*
7.5
12
8
1000
125
Unit
V
A
kHz
o C
* PHASE pin must not exceed 30V.
Electrical Specifications
Unless otherwise specified, these specification apply over VIN = 12V, VCC = 5V, 0 o C ≤ T J ≤ 125 o C.
PARAMETER
NOTE
TEST CONDITION
MIN
TYP
MAX
UNIT
BIAS SUPPLIES
VCC Turn-on Threshold
VCC Turn-off Threshold
VCC Threshold Hysteresis
VCC Operating Current
R FF = 200K,
3.9
3.6
4.2
3.9
150
7.1
4.5
4.2
V
V
mV
mA
EN = HIGH, Fs = 300kHz
VCC Shutdown Current
FF Shutdown Current
VIN Shutdown Current
EN = LOW
EN = LOW
EN = LOW
35
2
1
50
μA
μA
μA
INTERNAL LDO OUTPUT
LDO Output Voltage Range
C 3VCBP = 1μF
3.1
3.3
3.5
V
Output Current
CONTROL LOOP
8
mA
Reference Accuracy, V REF
On-Time Accuracy
Min Off Time
Soft-Start Current
1
V REF
R FF = 180K, T J = 65 o C
EN = HIGH
0.495
280
8
0.5
300
400
10
0.505
320
12
V
ns
ns
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
Under Voltage Hysteresis
Over Voltage Threshold
Over Voltage Hysteresis
1
1
Falling V FB & Monitor PGOOD
Rising V FB
Rising V FB & Monitor PGOOD
Falling V FB
0.37
0.58
0.4
10
0.62
10
0.43
0.66
V
mV
V
mV
PGOOD Delay Threshold
1
V
(V SS )
5
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