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MIC3833BWM Datasheet(PDF) 5 Page - Micrel Semiconductor

Part # MIC3833BWM
Description  Current-Fed PWM Controllers
Download  10 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC3833BWM Datasheet(HTML) 5 Page - Micrel Semiconductor

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April 1998
4-139
MIC3832/3833
Micrel
4
Typical Characteristics
4.94
4.96
4.98
5.00
5.02
5.04
5.06
-40
0
40
80
120
160
JUNCTION TEMPERATURE (
°C)
Reference Voltage vs.
Junction Temperature
15.6
15.8
16.0
16.2
16.4
-40
0
40
80
120
160
9.2
9.4
9.6
9.8
10.0
-40
0
40
80
120
160
JUNCTION TEMPERATURE (
°C)
MIC3832 Undervoltage
Lockout vs. Junct. Temp.
ON
OFF
10
100
1000
1
10
100
TIMING RESISTANCE (k
Ω)
Oscillator Frequency
vs. Timing Resistance
85pF
550pF
1.1nF
2.2nF
10.2nF
Note 4
0.1
1
10
110
TIMING CAPACITOR (nF)
Discharge Time vs.
Timing Capacitance
-40
°C
125
°C
25
°C
23
4
5 6
8
0
1
2
3
4
5
-40
0
40
80
120
160
JUNCTION TEMPERATURE (
°C)
Oscillator Discharge
Current vs. Junct. Temp.
0
10
20
30
40
50
60
70
80
90
100
012345
MDC CONTROL VOLTAGE (V)
Voltage-Mode Max. Duty
Cycle vs. MDC Voltage
Note 5
0
1
2
3
4
5
0
0.2
0.4
0.6
0.8
1
OUTPUT SINK CURRENT (A)
Output Saturation Voltage
vs. Output Sink Current
-55
°C
125
°C
25
°C
0
1
2
3
0123456
ERROR AMP OUTPUT (V)
Current Sense Threshold
vs. Error Amplifier Output
25
°C
125
°C
-55
°C
V
II = 1
V
II = 3
V
II = 2
-25
0
25
50
75
100
-180
-135
-90
-45
0
45
FREQUENCY (Hz)
AMPLITUDE
PHASE
Error Amplifier Open-Loop
Frequency Response
7.0
7.5
8.0
8.5
9.0
-40
0
40
80
120
160
JUNCTION TEMPERATURE (
°C)
MIC3833 Undervoltage
Lockout vs. Junct. Temp.
ON
OFF
0
1
2
3
4
5
0
0.2
0.4
0.6
0.8
1
OUTPUT SOURCE CURRENT (A)
Output Voltage Drop vs.
Output Source Current
125
°C
25
°C
-55
°C
Note 4:
CMR (pin 12) connected to C
T
(pin 15).
Note 5:
CMR (pin 12) connected to C
T
(pin 15). MDC voltage measured
at MDC/SS (pin 11).
C
T = 1nF, RT = 10kΩ.


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