ML4826
ELECTRICAL CHARACTERISTICS (Continued)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OVP COMPARATOR
Threshold Voltage
2.6
80
2.7
2.8
V
Hysteresis
115
150
mV
PFC ILIMIT COMPARATOR
Threshold Voltage
–0.8
100
–1.0
190
150
–1.15
300
V
mV
ns
∆(PFC ILIMIT - Gain Modulator Output)
Delay to Output
DC ILIMIT COMPARATOR
Threshold Voltage
Input Bias Current
Delay to Output
0.9
1.0
±0.3
150
1.1
±1
V
µA
ns
300
VIN OK COMPARATOR
Threshold Voltage
Hysteresis
2.4
0.8
2.5
1.0
2.6
1.2
V
V
GAIN MODULATOR
Gain (Note 3)
IAC = 100µA, VRMS = VFB = 0V
0.36
1.20
0.55
0.55
1.80
0.80
0.20
10
0.66
2.24
1.01
0.26
IAC = 50µA, VRMS = 1.2V, VFB = 0V
IAC = 50µA, VRMS = 1.8V, VFB = 0V
IAC = 100µA, VRMS = 3.3V, VFB = 0V 0.14
IAC = 100µA
Bandwidth
MHz
V
Output Voltage
I
AC = 250µA, VRMS = 1.15V,
0.72
0.82
0.95
200
VFB = 0V
OSCILLATOR
Initial Accuracy
TA = 25°C
180
190
1
kHz
%
Voltage Stability
VCCZ – 3V < VCC < VCCZ – 0.5V
Temperature Stability
Total Variation
2
%
Line, Temp
170
210
9.5
kHz
V
Ramp Valley to Peak Voltage
Dead Time
2.5
310
500
7.5
5
PFC Only
-1 Suffix
-2 Suffix
125
250
4.5
ns
ns
CT Discharge Current
VRAMP 1 = 0V, V(RTCT) = 2.5V
mA
mA
RAMP 1 Discharge Current
REFERENCE
Output Voltage
Line Regulation
Load Regulation
Total Variation
Long Term Stability
TA = 25°C, I(VREF) = 1mA
VCCZ – 3V < VCC < VCCZ – 0.5V
1mA < I(VREF) < 20mA
Line, Load, Temp
7.4
7.5
2
7.6
10
V
mV
mV
V
7
20
7.25
7.65
25
TJ = 125°C, 1000 Hours
5
mV
4
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
