MIC22950 Ver la hoja de datos (PDF) - Micrel
Número de pieza
componentes Descripción
Fabricante
MIC22950 Datasheet PDF : 22 Pages
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Micrel, Inc.
Typical Characteristics (Continued)
650
600
550
500
450
400
350
300
2.5
Switching Frequency
vs. Input Voltage
CF = 390pF
3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Input Voltage UVLO
vs. Temperature
2.8
2.7
VIN = (ON)
2.6
2.5
2.4
VIN = (OFF)
2.3
2.2
-40 -20
0 20 40 60 80 100 120
TEM PETATURE (°C)
16
14
12
10
8
6
4
2
0
2
RDSon
vs. Input Voltage
RDSON (P-Channel)
RDSON (N-Channel)
TCASE = 25°C
3
4
5
6
INPUT VOLTAGE (V)
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
Output Voltage
vs. RC Voltage
VOUT(NOM) = 1.8V
200 400 600 800 1000
RC VOLTAGE (mV)
Efficiency vs. Load Current
(VOUT=1.8V)
100
95
90
VIN = 3.6V
85
80
75
VIN = 5V
70
65
VIN = 2.6V
TCASE = 25°C
60
0
2
4
6
8
10
LOAD CURRENT (A)
Efficiency vs. Load Current
(VOUT=3.3V)
100
95
90
85
80
75
70
VIN = 5V
65
TCASE = 25°C
60
0
2
4
6
8
10
LOAD CURRENT (A)
MIC22950
RDSon
vs. Temperature
18
16
14
RDSON (P-Channel)
12
10
8
6
RDSON (N-Channel)
4
2
0
-40 -20
0 20 40 60 80 100 120
TEMPETATURE (°C)
Efficiency vs. Load Current
(VOUT=1.2V)
100
95
VIN = 3.6V
90
85
VIN = 2.6V
80
75
VIN = 5V
70
65
TCASE = 25°C
60
0
2
4
6
8
10
LOAD CURRENT (A)
February 2010
5
M9999-021910-B
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