ML4802 Просмотр технического описания (PDF) - Micro Linear Corporation
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ML4802 Datasheet PDF : 15 Pages
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ML4802
ELECTRICAL CHARACTERISTICS (Continued)
SYMBOL
PARAMETER
CONDITIONS
MIN
OVP COMPARATOR
Threshold Voltage
2.65
Hysteresis
175
PFC ILIMIT COMPARATOR
Threshold Voltage
–0.9
DPFC ILIMIT Threshold - Gain Modulator Output
120
Delay to Output
DC ILIMIT COMPARATOR
Threshold Voltage
1.4
Input Bias Current
Delay to Output
VIN OK COMPARATOR
Threshold Voltage
2.33
Hysteresis
0.8
GAIN MODULATOR
Gain (Note 3)
IAC = 100µA, VRMS = VFB = 0V
0.6
IAC = 50µA, VRMS = 1.2V, VFB = 0V 1.8
IAC = 50µA, VRMS = 1.8V, VFB = 0V 0.8
IAC = 100µA, VRMS = 3.3V, VFB = 0V 0.2
Bandwidth
IAC = 100µA
Output Voltage
IAC = 250µA, VRMS = 1.15V,
0.6
VFB = 0V
OSCILLATOR
Initial Accuracy
TA = 25ºC
188
Voltage Stability
11V < VCC < 16.5V
Temperature Stability
Total Variation
Line, Temp
182
Ramp Valley to Peak Voltage
Dead Time
PFC Only
260
CT Discharge Current
VRAMP 2 = 0V, VRAMP 1 = 2.5V
3.5
GREEN MODE
VGMT-L Green Mode Threshold Low
VGMT = VDC –VLS
70
VGMT-H Green Mode Threshold High
VGMT = VDC –VLS
360
VLS Level Shift
TYP
2.75
250
–1
220
150
1.5
±0.3
150
2.43
1.0
0.8
2
1
0.3
10
0.75
200
1
2
2.5
400
5.5
1.25
MAX UNITS
2.85
V
325
mV
–1.1
V
mV
300
ns
1.6
V
±1
µA
300
ns
2.55
V
1.2
V
1.05
2.80
1.25
0.4
0.9
MHz
V
212
kHz
%
%
218
kHz
V
ns
7.5
mA
275
mV
580
mV
V
4
Datasheet August 2000
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