ml4805 Fairchild Semiconductor, ml4805 Datasheet - Page 4

• Manufacturer Part Number: ml4805
• Description: Variable Feedforward Pfc/pwm Controller Combo
• Manufacturer: Fairchild Semiconductor

ML4805
ELECTRICAL CHARACTERISTICS
OVP COMPARATOR
PFC I
DC I
V
GAIN MODULATOR
OSCILLATOR
4
SYMBOL
IN
OK COMPARATOR
LIMIT
LIMIT
COMPARATOR
COMPARATOR
Threshold Voltage
Hysteresis
Threshold Voltage
∆PFC I
Delay to Output
Threshold Voltage
Input Bias Current
Delay to Output
Threshold Voltage
Hysteresis
Gain (Note 3)
Bandwidth
Output Voltage
Initial Accuracy
Voltage Stability
Temperature Stability
Total Variation
Ramp Valley to Peak Voltage
PFC Dead Time
C
T
Discharge Current
LIMIT
Threshold - Gain Modulator Output
PARAMETER
(Continued)
I
I
I
I
IAC = 100µA
I
V
T
11V < V
Line, Temp
V
AC
AC
AC
AC
AC
A
FB
RAMP 2
= 25ºC
= 100µA, V
= 50µA, V
= 50µA, V
= 350µA, V
= 100µA, V
= 0V
CC
= 0V, V
CONDITIONS
< 16.5V
RMS
RMS
RMS
RMS
RMS
RAMP 1
= 1V, V
= 1.8V, V
= V
= 3.3V, V
= 1V,
FB
= 2.5V
= 0V
FB
FB
= 0V
FB
= 0V
= 0V
MIN
2.65
0.65
1.90
0.90
0.20
0.65
175
120
188
182
350
-0.9
1.4
2.4
0.8
3.5
2.75
±0.3
0.85
2.20
1.05
0.30
0.75
TYP
250
-1.0
220
150
150
200
470
1.5
2.5
1.0
2.5
5.5
10
1
2
REV. 1.1 3/9/2001
MAX
2.85
1.05
2.40
1.25
0.40
0.85
325
-1.1
300
300
212
218
600
1.6
2.6
1.2
7.5
±1
UNITS
MHz
kHz
kHz
mV
mV
mA
µA
ns
ns
ns
%
%
V
V
V
V
V
V
V