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参数资料
| 型号： | L4981B |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A POWER FACTOR CONTROLLER, 115 kHz SWITCHING FREQ-MAX, PDIP20 |
| 封装： | DIP-20 |
| 文件页数： | 12/16页 |
| 文件大小： | 2620K |
| 代理商： | L4981B |
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
SUPPLY VOLTAGE
VCC
Operating Supply Voltage
19.5
V
OVER VOLTAGE PROTECTION COMPARATOR
Vthr
Rising Threshold Voltage
Vref
-20mV
5.1
Vref
+20mV
V
V3Hys
Hysteresis
180
250
320
mV
I3
Input Bias Current
0.05
1
A
td
Propagation delay to output
VOVP = Vthr +100mV
1
2
s
OVER CURRENT PROTECTION COMPARATOR
Vth
Threshold Voltage
±30
mV
td
Propagation delay to Output
VOCP = Vthr -0.2V
0.4
0.9
s
Iipk
Current Source Generator
VIPK = -0.1V
only for L4981A
65
85
105
A
IL
Leakage Current
VIPK = -0.1V
only for L4981B
5
A
CURRENT AMPLIFIER SECTION
Voffset
Input Offset Voltage
VMULT OUT = VSENSE = 3.5V
±2mV
I9bias
Input Bias Current
VSENSE = 0V
-500
50
500
nA
Open Loop Gain
1.1V
≤ VCA OUT ≤ 6V
70
100
dB
SVR
Supply Voltage Rejection
12V
≤ VCC ≤ 19V
VMULT OUT = 3.5V VSENSE = 3.5V
68
90
dB
V5H
Output High Voltage
VMULT OUT = 200mV
ICA OUT = -0.5mA, VIAC = 0V
6.2
V
V5L
Output Low Voltage
VMULT OUT = -200mV
ICA OUT = 0.5mA, VIAC = 0V
0.9
V
-I5
Output Source Current
VMULT OUT = 200mV,
VIAC = 0V, VCA-OUT = 3.5V
210
mA
I5
Output Sink Current
2
10
mA
OUTPUT SECTION
V20L
Output Voltage Low
ISINK = 250mA
0.5
0.8
V
V20H
Output Voltage High
ISOURCE = 250mA
VCC = 15V
11.5
12.5
V
tr
Output Voltage Rise Time
COUT = 1nF
50
150
ns
tf
Output Voltage Fall Time
COUT = 1nF
30
100
ns
VGDRV
Voltage Clamp
ISOURCE = 0mA
13
16
19
V
TOTAL STANDBY CURRENT SECTION
I19start
Supply Current before start up
VCC = 14V
0.3
0.5
mA
I19on
Supply Current after turn on
VIAC = 0V, VCOSC = 0,
Pin17 = Open
812
mA
I19
Operating Supply Current
Pin20 = 1nF
12
16
mA
VCC
Zener Voltage
(*)
20
25
30
V
UNDER VOLTAGE LOCKOUT SECTION
Vth ON
Turn on Threshold
14.5
15.5
16.5
V
Vth OFF
Turn off Threshold
9
10
11
V
Programmable Turn-on Threshold
Pin 15 to VCC = 220K
Pin15 to GND = 33K
10.6
12
13.4
V
LOAD FEED FORWARD
ILFF
Bias Current
V6 = 1.6V
70
140
A
V6 = 5.3V
200
300
A
VI
Input Voltage Range
1.6
5.3
V
(*) Maximum package power dissipation limits must be observed.
L4981A - L4981B
5/16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L4981B | 制造商:STMicroelectronics 功能描述:POWER FACTOR CORRECTOR 4981 DIP20 |
| L4981BD | 功能描述:功率因数校正 IC Very High Power RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| L4981BD | 制造商:STMicroelectronics 功能描述:POWER FACTOR CORRECTOR SMD 4981 |
| L4981BD013TR | 功能描述:功率因数校正 IC Very High Power RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| L4981DIE1 | 制造商:STMicroelectronics 功能描述: |
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