MIC3838BMM Micrel Inc, MIC3838BMM Datasheet - Page 7

• Manufacturer Part Number: MIC3838BMM
• Description: IC CTRLR DC/DC PUSH-PULL 10-MSOP
• Manufacturer: Micrel Inc

Specifications of MIC3838BMM

• Pwm Type: Voltage/Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 50%
• Voltage - Supply: 2 V ~ 14 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

April 2005
MIC3838/3839
2.040
2.030
2.020
2.010
2.000
0.545
0.540
0.535
0.530
0.525
0.520
0.515
3.020
3.010
3.000
2.990
2.980
2.970
2.960
2.950
3.02
3.01
3.00
2.99
2.98
2.97
2.96
MIC3839 3V Reference Voltage
-40 -20 0 20 40 60 80 100120140
-40 -20 0 20 40 60 80 100120140
0
MIC3838 Peak Current Limit
Reference vs. Temperature
V
REFERENCE CURRENT (mA)
MIC3839 Error Amplifier
V
MIC3838 3V Reference
IN = 5V
DD
V
TEMPERATURE (°C)
IN
TEMPERATURE (°C)
TEMPERATURE (°C)
vs. Temperature
= 10.0V
vs. Temperature
= 10V
0.5
vs. Current
V
V
IN = 10V
V
IN
DD
1.0
= 10V
= 4.3V
1.5
0.550
0.545
0.540
0.535
0.530
0.525
0.520
0.515
0.510
0.505
0.500
3.060
3.050
3.040
3.030
3.020
3.010
3.000
2.990
2.980
2.970
2.960
2.950
0.56
0.55
0.54
0.53
0.52
0.51
0.5
-40 -20 0 20 40 60 80 100120140
-40 -20 0 20 40 60 80 100120140
8
MIC3839 Peak Current Limit
MIC3838 Current Limit
V
V
9 10 11 12 13 14 15 16
MIC3839 3V Reference
IN
IN
Threshold vs. V
TEMPERATURE (°C)
TEMPERATURE (°C)
vs. Temperature
vs. Temperature
= 5V
= 5V
V
7
DD
V
(V)
IN
V
= 10V
IN
DD
= 10V
0.540
0.535
0.530
0.525
0.520
3.020
3.010
3.000
2.990
2.980
2.970
2.960
120
100
-20
-40
80
60
40
20
0
4 5 6 7 8 9 10 11 12 13 14
0
MIC3839 Peak Current Limit
Phase-Gain vs. Frequency
MIC3838 Error Amplifier
MIC3839 3V Reference
2
FREQUENCY (Hz)
Voltage vs. V
4
V
vs. V
6
V
DD
DD
8
(V)
(V)
DD
10 12 14
MIC3838/3839
DD
180
135
90
45
0
Micrel