ML4819 Datasheet, PDF (3/15 Pages) Fairchild Semiconductor – Power Factor and PWM Controller “Combo”

ML4819
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) ................... 5µJ
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
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, R_T = 14kΩ, C_T = 1000pF, T_A = Operating Temperature Range, V_CC = 15V (Notes 1, 2).
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OSCILLATOR
Initial Accuracy
Voltage Stability
Temperature Stability
T_J = 25°C
12V < V_CC < 18V
90
97
104
kHz
0.2
%
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)
DUTY CYCLE LIMIT COMPARATOR
T_J = 25°C, V_{OUT A} = 2V
V_{OUT A} = 2V
4.8
5.0
5.2
V
7.5
8.4
9.3
mA
7.2
8.4
9.5
mA
Input Offset Voltage
–15
15
mV
Input Bias Current
–2
–10
µA
Duty Cycle
REFERENCE
V_{DUTY CYCLE} = V_REF/2
43
45
49
%
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
T_J = 25°C, I_O = 1mA
12V < V_CC < 25V
1mA < I_O < 20mA
4.95
5.00
5.05
V
2
20
mV
8
25
mV
0.4
%
Total Variation
Line, load, temperature
4.9
5.1
V
Output Noise Voltage
10Hz to 10kHz
50
µV
Long Term Stability
Short Circuit Current
ERROR AMPLIFIER
T_J = 125°C, 1000 hours, (Note 1)
V_REF = 0V
5
25
mV
–30
–85
–180
mA
Input Offset Voltage
–15
15
mV
Input Bias Current
–0.1
–1.0
µA
Open Loop Gain
PSRR
Output Sink Current
1 < V_{EA OUT A} < 5V
60
75
dB
12V < V_CC < 25V
60
90
dB
V_{EA OUT A} = 1.1V, V_{INV A} = 5.2V
2
12
mA
Output Source Current
V_{EA OUT A} = 5.0V, V_{INV A} = 4.8V
–0.5
–1.0
mA
REV. 1.0 10/10/2000
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