ML4804
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TRI-FAULT DETECT
FaultDetectHIGH
2.65
2.75
2
2.85
4
V
Time to Fault Detect HIGH
VFB = VFAULT DETECT LOW
ms
to VFB =OPEN; 470pF from VFB to GND
Fault Detect LOW
0.4
1.7
0.5
0.6
V
VCCOVP COMPARATOR
Threshold Voltage
Hysteresis
TA = Operation Temp Range
TA = Operation Temp Range
16.4
2.0
V
V
2.3
-1.1
300
PFC ILIMIT COMPARATOR
Threshold Voltage
-0.9
120
-1.0
220
150
V
mV
ns
(PFC ILIMIT VTH - Gain Modulator Output)
Delay to Output
DC ILIMIT COMPARATOR
Threshold Voltage
Input Bias Current
Delay to Output
0.95
1.0
±0.3
150
1.05
±1
V
µA
ns
300
VIN OK COMPARATOR
Threshold Voltage
Hysteresis
2.35
0.8
2.45
1.0
2.55
1.2
V
V
GAINMODULATOR
Gain (Note 3)
IAC = 100µA, VRMS = VFB = 0V
IAC = 50µA, VRMS = 1.2V, VFB = 0V
IAC = 50µA, VRMS = 1.8V, VFB = 0V
0.60
1.8
0.80
2.0
1.05
2.40
1.25
0.40
0.85
1.0
IAC = 100µA, VRMS = 3.3V, VFB = 0V 0.20
IAC = 100µA
0.30
10
Bandwidth
MHz
V
Output Voltage
I
AC = 350µA, VRMS = 1V,
0.60
0.75
0.9
81
VFB = 0V
OSCILLATOR
Initial Accuracy
Voltage Stability
Temperature Stability
Total Variation
TA = 25°C
71
76
1
kHz
%
11V < VCC < 16.5V
2
%
Line, Temp
68
84
kHz
V
Ramp Valley to Peak Voltage
2.5
250
5.5
PFC Dead Time
170
3.5
330
7.5
ns
CT Discharge Current
VRAMP 2 = 0V, VRAMP 1 = 2.5V
mA
4
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
