MIC2184_05 Datasheet, PDF (6/12 Pages) Micrel Semiconductor – Low Voltage Buck PWM Control IC

MIC2184
Typical Characteristics
Quiescent Current
vs. Input Voltage
4.5
400kHz
4
3.5 ^{IQ = IVINA + IVINP}
3
2.5
2
1.5
200kHz
1
0.5
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)
Error Amp Reference Voltage
vs. Temperature
1.246
1.245
1.244
1.243
1.242
1.241
V_IN = 3.3V
1.2-440 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
Soft Start Current vs.
Temperature
4.9
4.8
4.7
4.6
4.5
4.-440 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
M9999-042205
Quiescent Current
vs. Temperature
1.4
1.2
400kHz
1.0
200kHz
0.8
I_STANDBY
0.6
0.4
0.2
I_Q = I_VINA + I_VINP
V_INA = V_INP = 3.3V
0-40 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
3.08 ^{VDD vs. Temperature}
3.06
3.04
3.02
3.00
2.98
2.96
2.94
V_IN = 5V
2.9-240 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
Frequency Variation
vs. Input Voltage
2
1.5
200kHz
1
0.5
0
-0.5
-1
400kHz
-1.5
-20 _{2 4 6 8 10 12 14}
INPUT VOLTAGE (V)
Overcurrent Threshold
vs. Input Voltage
102.0
100.0
98.0
96.0
94.0
92.0
90.00 _{2 4 6 8 10 12 14}
INPUT VOLTAGE (V)
6
Micrel, Inc.
3.10 ^{VDD vs. Input Voltage}
3.05
V_INA = V_INP
3.00
2.95
2.90
2.85
2.800
5
10
15
INPUT VOLTAGE (V)
Error Amp Reference Voltage
vs. Input Voltage
1.2451
1.2449
1.2447
1.2445
1.2443
1.24410 _{2 4 6 8 10 12 14}
INPUT VOLTAGE (V)
Frequency Variation vs.
Temperature
5
3
200kHz
1
-1
400kHz
-3
-5
-7
-9
-11
-13
-1-550 _{-30 -10 10 30 50 70 90 110}
TEMPERATURE (°C)
Overcurrent Threshold
vs. Temperature
102
101
V_IN = 3.3V
100
99
98
97
96
9-540 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
April 2005