ML4827
ELECTRICAL CHARACTERISTICS
SYMBOL
TRI-FAULT DETECT
Fault Detect HIGH
Time to Fault Detect HIGH
V
FB
= V
FAULT DETECT LOW
to V
FB
=OPEN
(Continued)
CONDITIONS
MIN
TYP
MAX
UNITS
PARAMETER
2.6
2.7
2.8
V
1nF from V
FB
to GND
Fault Detect LOW
PFC I
LIMIT
COMPARATOR
Threshold Voltage
∆(PFC
I
LIMIT
V
TH
- Gain Modulator Output)
Delay to Output
DC I
LIMIT
COMPARATOR
Threshold Voltage
Input Bias Current
Delay to Output
V
IN
OK COMPARATOR
Threshold Voltage
Hysteresis
GAIN MODULATOR
Gain (Note 3)
I
AC
= 100µA, V
RMS
= V
FB
= 0V
I
AC
= 50µA, V
RMS
= 1.2V, V
FB
= 0V
I
AC
= 50µA, V
RMS
= 1.8V, V
FB
= 0V
I
AC
= 100µA, V
RMS
= 3.3V, V
FB
= 0V
Bandwidth
Output Voltage
OSCILLATOR
Initial Accuracy
Voltage Stability
Temperature Stability
Total Variation
Ramp Valley to Peak Voltage
Dead Time
C
T
Discharge Current
PFC Only
V
RAMP 2
= 0V, V
RAMP 1
= 2.5V
450
4.5
Line, Temp
72
T
A
= 25°C
V
CCZ
- 3V < V
CC
< V
CCZ
- 0.5V
75
IAC = 100µA
I
AC
= 250µA, V
RMS
= 1.15V,
V
FB
= 0V
0.74
0.36
1.20
0.55
0.14
2.45
0.8
0.9
–0.8
100
0.4
1
0.5
2
0.6
ms
V
–1.0
190
150
–1.15
V
mV
300
ns
1.0
±0.3
150
1.1
±1
300
V
µA
ns
2.55
1.0
2.65
1.2
V
V
0.55
1.80
0.80
0.20
10
0.82
0.66
2.24
1.01
0.26
MHz
0.90
V
80
1
2
85
kHz
%
%
88
2.5
600
7.5
750
9.5
kHz
V
ns
mA
4
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
