MIC3838 Datasheet, PDF (7/11 Pages) Micrel Semiconductor – Flexible Push-Pull PWM Controller

MIC3838/3839
MIC3839 Error Amplifier
Reference vs. Temperature
2.040
V_IN = 5V
2.030
2.020
V_IN = 10V
2.010
2.000
TEMPERATURE (°C)
MIC3838 Peak Current Limit
vs. Temperature
0.545
0.540
0.535
0.530
0.525
V_IN = 10V
0.520
0.515
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
MIC3838 3V Reference
vs. Temperature
3.020
3.010
3.000
2.990
V_IN = 10V
2.980
2.970
2.960
2.950-40 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
MIC3839 3V Reference Voltage
vs. Current
3.02
3.01
3.00
2.99
V = 4.3V
DD
2.98
V = 10.0V
DD
2.97
2.96
0
0.5
1.0
1.5
REFERENCE CURRENT (mA)
August 2003
MIC3838 Current Limit
0.56
Threshold vs. V_DD
0.55
0.54
0.53
0.52
0.51
0.5
8 9 10 11 12 13 14 15 16
V_DD (V)
MIC3839 Peak Current Limit
vs. Temperature
0.550
0.545
0.540
0.535
0.530
0.525
V_IN = 5V
V_IN = 10V
0.520
0.515
0.510
0.505
0.500
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
3.060
MIC3839 3V Reference
vs. Temperature
3.050
3.040
3.030
3.020
V_IN = 5V
3.010
3.000
2.990
2.980
V_IN = 10V
2.970
2.960
2.950-40 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
7
Micrel
MIC3839 Peak Current Limit
0.540
vs. V_DD
0.535
0.530
0.525
0.520
0 2 4 6 8 10 12 14
V_DD (V)
MIC3839 3V Reference
Voltage vs. V_DD
3.020
3.010
3.000
2.990
2.980
2.970
2.9604 _{5 6 7 8 9 10 11 12 13 14}
V_DD (V)
MIC3838 Error Amplifier
Phase-Gain vs. Frequency
120
180
100
80
135
60
40
90
20
0
45
-20
-40
0
FREQUENCY (Hz)
MIC3838/3839