參數(shù)資料
型號： ML4819
廠商： Fairchild Semiconductor Corporation
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Power Factor and PWM Controller “Combo”
中文描述： 功率因數(shù)和PWM控制器“組合”
文件頁數(shù)： 3/15頁
文件大?。?/td> 269K
代理商： ML4819
ML4819
REV. 1.0 10/10/2000
3
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, R
T
= 14k
, C
T
= 1000pF, T
A
= Operating Temperature Range, V
CC
= 15V (Notes 1, 2).
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OSCILLATOR
Initial Accuracy
T
J
= 25
°
C
12V < V
CC
< 18V
90
97
104
kHz
Voltage Stability
0.2
%
Temperature Stability
2
%
Total Variation
Line, temp.
88
106
kHz
Ramp Valley
0.9
V
Ramp Peak
4.3
V
R
T
Voltage
Discharge Current (PWM B open)
4.8
5.0
5.2
V
T
J
= 25
°
C, V
OUT A
= 2V
V
OUT A
= 2V
7.5
8.4
9.3
mA
7.2
8.4
9.5
mA
DUTY CYCLE LIMIT COMPARATOR
Input Offset Voltage
–15
15
mV
Input Bias Current
–2
–10
μ
A
Duty Cycle
V
DUTY CYCLE
= V
REF/2
43
45
49
%
REFERENCE
Output Voltage
T
J
= 25
°
C, I
O
= 1mA
12V < V
CC
< 25V
1mA < I
O
< 20mA
4.95
5.00
5.05
V
Line Regulation
2
20
mV
Load Regulation
8
25
mV
Temperature Stability
0.4
%
Total Variation
Line, load, temperature
4.9
5.1
V
Output Noise Voltage
10Hz to 10kHz
50
μ
V
Long Term Stability
T
J
= 125
°
C, 1000 hours, (Note 1)
V
REF
= 0V
5
25
mV
Short Circuit Current
–30
–85
–180
mA
ERROR AMPLIFIER
Input Offset Voltage
–15
15
mV
Input Bias Current
–0.1
–1.0
μ
A
Open Loop Gain
1 < V
EA OUT A
< 5V
12V < V
CC
< 25V
V
EA OUT A
= 1.1V, V
INV A
= 5.2V
60
75
dB
PSRR
60
90
dB
Output Sink Current
2
12
mA
Output Source Current
V
EA OUT A
= 5.0V, V
INV A
= 4.8V
–0.5
–1.0
mA
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
Supply Voltage (V
CC
)................................................. 35V
Output Current, Source or Sink (RAMP COMP)
DC ....................................................................... 1.0A
Output Energy (capacitive load per cycle) ...................5
μ
J
Multiplier I
SINE
Input (I
SINE
) ................................... 1.2mA
Error Amp Sink Current (GM OUT) ........................ 10mA
Oscillator Charge Current ........................................ 2mA
Analog Inputs (ISENSE A, EA OUT A, INV A)
............................................................... –0.3V to 5.5V
Junction Temperature ............................................. 150
°
C
Storage Temperature Range ..................... –65
°
C to 150
°
C
Lead Temperature (soldering 10 sec.) ..................... 260
°
C
Thermal Resistance (
θ
JA
)
Plastic DIP or SOIC ......................................... 60
°
C/W
OPERATING CONDITIONS
Temperature Range
ML4819C .................................................. 0
°
C to 70
°
C
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