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参数资料
| 型号： | IRDC3870 |
| 厂商： | International Rectifier |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL REG SUPIRBUCK DC/DC |
| 产品变化通告： | (EP) Parts Discontinuation 25/May/2012 |
| 标准包装： | 1 |
| 系列： | * |
IR3870MPBF
Recommended Operating Conditions
Symbol
Definition
Min
Max
Units
VIN
Input Voltage
3
26*
VCC
Boot to
Supply Voltage
Supply Voltage
3
3.6
7.0
V
PHASE
V OUT
Output Voltage
0.5
12
I OUT
Output Current
0
10
A
Fs
Switching Frequency
1000
kHz
* Note: PHASE pin must not exceed 30V.
Electrical Specifications
Unless otherwise specified, these specification apply over VIN = 12V, PVCC = 7VDC, 0 o C ≤ T J ≤ 125 o C.
PARAMETER
NOTE
TEST CONDITION
MIN
TYP
MAX
UNIT
BIAS SUPPLIES
VCC Turn-on Threshold
3
V
VCC Turn-off Threshold
2.65
V
VCC Threshold Hysteresis
60
mV
PVCC Turn-on Threshold
3.05
V
PVCC Turn-off Threshold
2.65
V
PVCC Threshold Hysteresis
60
mV
VCC Shutdown Current
EN=LOW
30
60
? A
VCC Operating Current
RFF = 180k ? , EN = HIGH
1.2
mA
PVCC Operating Current
RFF = 180k ? ,
8
mA
EN = HIGH, Fs = 500kHz
PVCC Shutdown Current
EN=LOW
20
60
? A
FF Shutdown Current
EN=LOW
0.1
2
? A
V IN Shutdown Current
EN=LOW
0
1
? A
PHASE Shutdown Current
EN=LOW
0.25
2
? A
CONTROL LOOP
Reference Accuracy, V REF
0.495
0.5
0.505
V
R FF = 180 k ? , T J = 65 C
On-Time Accuracy
0
280
300
320
ns
Min Off Time
300
ns
Soft-Start Current
EN = HIGH
8
10
12
? A
FAULT PROTECTION
ISET pin output current
18
20
22
? A
Under Voltage Threshold
Falling V FB & monitor PGOOD
0.37
0.4
0.43
V
Under Voltage Hysteresis
Rising V FB
7.5
mV
Over Voltage Threshold
Rising V FB & monitor PGOOD
0.56
0.6
0.64
V
Over Voltage Hysteresis
1
Rising V FB
7.5
mV
PGOOD Delay Threshold (V SS )
0.6
V
5
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