MIC2183_05 Datasheet, PDF (6/12 Pages) Micrel Semiconductor – Low Voltage Synchronous Buck PWM Control IC

MIC2183
Typical Characteristics
Quiescent Current
vs. Input Voltage
6
400kHz
5 ^{IQ = IVINA + IVINP}
4
200kHz
3
2
1
I_STANDBY
00
5
10
15
INPUT VOLTAGE (V)
3.005
V_DD vs. Load
3.000
2.995
V_INA = V_INP = 5V
2.990
2.985
2.980
2.975
2.9700 _{0.2 0.4 0.6 0.8 1 1.2}
V_DD LOAD CURRENT (mA)
2.5
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.00
Switching Frequency
vs. Input Voltage
200kHz
400kHz
5
10
15
INPUT VOLTAGE (V)
Overcurrent Threshold vs.
Input Voltage
102
100
98
96
94
92
900
5
10
15
INPUT VOLTAGE (V)
M9999-042205
Quiescent Current
vs. Temperature
1.4
1.2
400kHz
1.0
200kHz
0.8
I_STANDBY
0.6
0.4 _{IQ = IVINA = IVINP}
0.2 V_{INA =} V_{INP = 3.3V}
0
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
3.04 ^{VDD vs. Temperature}
3.03
3.02
3.01
3.00
2.99
2.98
V_INA = V_INP = 3.3V
2.97
2.9-640 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
5
200kHz
0
400kHz
-5
-10
-15
-2-040 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
Overcurrent Threshold
vs. Temperatue
110.0
108.0
106.0
104.0
102.0
100.0
98.0
96.0
94.0
92.0
90.-040 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
6
Micrel, Inc.
3.15 ^{VDD vs. Input Voltage}
3.10
3.05
3.00
2.95
2.90
V_INA = V_INP
2.85
2.800
5
10
15
INPUT VOLTAGE (V)
Error Amp Reference Voltage
vs. Temperature
1.246
1.245
1.244
1.243
1.242
1.241
1.240
1.23-940 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
Soft Start Current vs.
Temperature
5.40
5.35
5.30
5.25
5.20
5.15
5.10
5.05
5.0-040 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
OUTN Drive Impedance vs.
Input Voltage
9
8
7
6
5
SOURCE
4
3
2
SINK
1
00
5
10
15
INPUT VOLTAGE (V)
April 2005