MIC3839BMM Micrel Inc, MIC3839BMM Datasheet - Page 6
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MIC3839BMM
Manufacturer Part Number
MIC3839BMM
Description
IC CTRLR DC/DC PUSH-PULL 10-MSOP
Manufacturer
Micrel Inc
Datasheet
1.MIC3839YMM.pdf
(11 pages)
Specifications of MIC3839BMM
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
MIC3838/3839
Typical Characteristics
MIC3838/3839
1.400
1.300
1.200
1.100
1.000
10.0
-0.05
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.35
0.25
0.15
0.05
-0.1
89
88
87
86
85
84
83
0.4
0.3
0.2
0.1
0
0
0
MIC3839 Oscillator Variation
0
2
MIC3839 I
RC Pin Resistance
2
TEMPERATURE (°C)
vs. Temperature
V
RESISTANCE (kΩ)
4
vs. Deadtime
IN = 10V
OPERATING
I
4
DD
MIC3838
V
6
vs. V
Current
DD
V
6
DD
DD
8
(V)
V
(V)
DD
8
Current
IN = 5V
10 12 14
10 12 14
-0.50
-1.00
100k
16.0
14.0
12.0
10.0
1.50
1.00
0.50
0.00
2.04
2.02
2.00
1.98
1.96
1.94
1.92
10k
8.0
6.0
4.0
2.0
1M
0
4
0
0
MIC3838 Oscillator Variation
C = 1000pF
C = 100pF
MIC3839 Error Amplifier
Oscillator Frequency
2
6
V
C = 220pF
Reference vs. V
TEMPERATURE (°C)
IN = 10V
50k
vs. Temperature
vs. RC Values
4
RESISTANCE (kΩ)
C = 270pF
8
I
DD
MIC3839
V
C = 330pF
6
10 12 14 16 18
6
V
Current
DD
100k
DD
C = 470pF
8
(V)
(V)
V
10 12 14
C = 680pF
DD
150k
DD
= 10V
200k
-0.500
-1.000
-1.500
1.260
1.250
1.240
1.230
1.220
2.000
1.500
1.000
0.500
0.000
200
175
150
125
100
2.040
2.030
2.020
2.010
2.000
1.990
75
50
Variation vs. Temperature
Reference vs. Temperature
MIC3839 % Oscillator
MIC3838 I
RC Pin Capacitance
MIC3838 Error Amplifier
TEMPERATURE (°C)
TEMPERATURE (°C)
vs. Temperature
CAPACITANCE (pF)
V
TEMPERATURE (°C)
IN
vs. Deadtime
= 10V
V
IN
DD
= 5V
Current
V
V
IN
IN
= 10V
= 10V
April 2005
Micrel