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參數(shù)資料
| 型號： | ML4821CS |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Power Factor Controller |
| 中文描述： | 1 A POWER FACTOR CONTROLLER, 115 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 106K |
| 代理商： | ML4821CS |
ML4821
PRODUCT SPECIFICATION
8
REV. 1.0.2 6/19/01
Under Voltage Lockout, OVP and Current Limit
On power-up the ML4821 remains in the UVLO condition;
output low and quiescent current low. The IC becomes
operational when V
CC
reaches 16V. When V
CC
drops below
9V, the UVLO condition is imposed. During the UVLO
condition, the V
REF
pin is “off”, making it usable as a “flag”
for starting up a down-stream PWM converter.
OVP, Shutdown, and IC Bias
When the input to the OVP comparator exceeds V
REF
, the
output of the ML4821 is inhibited. The OVP input also
functions as a “sleep” input, putting the IC into the low
quiescent UVLO state when the OVP pin is pulled below
0.7V.
Figure 7. Gain Modulator Linearity.
Figure 8. Under-Voltage Lockout Block Diagram.
500
0
0
100
300
400
500
SINE INPUT CURRENT (
μ
A)
M
μ
A
200
100
200
300
400
1.0
1.5
2.5
3.5
4.5
5.5
E
R
T
= 5k
V
RMS
= 3V
ENABLE
V
REF
–
+
–
+
15
16
INTERNAL
BIAS
4.4V
LOGIC
POWER
V
REF
9V
V
CC
Figure 9. Total Supply Current vs. Supply Voltage.
Figure 10. Reference Load Regulation.
40
10
0
0
10
20
30
V
CC
SUPPLY VOLTAGE (V)
I
C
T
A
= 25
°
C
20
30
V
CC
= 15V
T
A
=
–
55
°
C
T
A
= 25
°
C
T
A
= 125
°
C
0
–
4.0
–
8.0
–
12
–
16
–
20
–
24
0
20
40
60
80
100
120
I
REF
, REFERENCE SOURCE CURRENT (mA)
V
R
,
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ML4821CS_Q | 功能描述:功率因數(shù)校正 IC PFC Controller RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| ML4821CSX | 功能描述:功率因數(shù)校正 IC PFC Controller RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| ML4821IP | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor Controller |
| ML4821IS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor Controller |
| ML4822 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:ZVS Average Current PFC Controller |
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