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参数资料
| 型号： | L4981AD013TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A POWER FACTOR CONTROLLER, 115 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 9/16页 |
| 文件大小： | 2620K |
| 代理商： | L4981AD013TR |
put filter; both the operating frequency modes
working with an average current mode PWM con-
troller, maintaining sinusoidal line current without
slope compensation.
Besides power MOSFET gate driver, precise volt-
age reference (externally available), error ampli-
fier, undervoltage lockout, current sense and the
soft start are included. To limit the number of the
external components, the device integrates pro-
tections as overvoltage and overcurrent. The
overcurrent level can be programmed using a
simple resistor for L4981A. For a better precision
and for L4981B an external divider must be used.
ABSOLUTE MAXIMUM RATINGS
Symbol
Pin
Parameter
Value
Unit
VCC
19
Supply Voltage (ICC
≤50mA) (*)
selflimit
V
IGDRV
20
Gate driv. output peak current (t = 1
s)
SINK
2
Α
.
SOURCE
1.5
A
VGDRV
Gate driv. output voltage t = 0.1
s-1
V
Voltages at pins 3, 14, 7, 6, 12, 15
-0.3 to 9
V
VVA-OUT
13
Error Amplifier Voltage
-0.3 to 8.5
V
IAC
4
AC Input Current
5
mA
Voltages at pin 8, 9
-0.5 to 7
V
VCA-OUT
5
Current Amplifier Volt. (Isource = -20mA; Isink = 20mA)
-0.3 to 8.5
V
VROSC
17
Voltage at pin 17
-0.3 to 3
V
11, 18
Voltage at pin 11, 18
-0.3 to 7
V
ICOSC
18
Input Sink Current
15
mA
IFREQ-MOD
16
Frequency Modulation Sink Current (L4981B)
5
mA
VSYNC
16
Sync. Voltage (L4981A)
-0.3 to 7
V
VIPK
2
Voltage at pin 2
Voltage at Pin 2 t = 1
s
-0.3 to 5.5
-2
V
Ptot
Power Dissipation at Tamb = 70
°C
(DIP20)
1
W
Power Dissipation at Tamb = 70
°C
(SO20)
0.6
W
Top
Operating Ambient Temperature
-40 to 125
°C
Tstg
StorageTemperature
-55 to 150
°C
(*) Maximum package power dissipation limits must be observed.
PIN CONNECTIONS (Top views)
L4981A
L4981B
L4981A - L4981B
2/16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L4981B | 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 |
| 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 |
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