MIC2182 Datasheet, PDF (6/28 Pages) Micrel Semiconductor – High-Efficiency Synchronous Buck Controller Final Information

MIC2182
Typical Characteristics
Quiescent Current
vs. Temperature
2.0
1.8
PWM
1.6
1.4
1.2
1.0
0.8
0.6
Skip
0.4
0.2
0
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
1.5
1.0
0.5
0
-0.5
0.4
0.3
0.2
0.1
00
Quiescent Current
vs. Supply Voltage
UVLO Mode
(mA)
SHUTDOWN
(µA)
4 8 12 16 20 24 28 32
SUPPLY VOLTAGE (V)
V_REF (Fixed Versions)
1.260
vs. Temperature
1.255
1.250
1.245
1.240
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
V_DD
vs. Temperature
4.98
4.96
4.94
4.92
4.90
4.88
4.86
4.84
4.82
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
MIC2182
Quiescent Current
vs. Temperature
1.50
1.00
0.50
UVLO Mode
(mA)
0
-0.520
0.15
0.10
0.05
SHUTDOWN
(µA)
0-40 _{-20 0 20 40 60 80 100120140}
TEMPERATURE (°C)
1.256
1.254
1.252
1.250
1.248
1.246
1.244
1.242
1.240
1.238
1.236
0
V_REF (Fixed Versions)
Line Regulation
4 8 12 16 20 24 28 32
SUPPLY VOLTAGE (V)
V_DD
5.0
Line Regulation
4.8
4.6
4.4
4.2
4.0
0 4 8 12 16 20 24 28 32
SUPPLY VOLTAGE (V)
Oscillator Frequency
vs. Temperature
10
8
6
4
2
0
-2
-4
-6
-8
-10
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
6
Micrel
Quiescent Current
vs. Supply Voltage
4.0
3.5
3.0
2.5
2.0
PWM
1.5
1.0
Skip
0.5
0
0 4 8 12 16 20 24 28 32
INPUT VOLTAGE (V)
1.260
V_REF (Fixed Versions)
Load Regulation
1.250
1.240
1.230
1.220
1.210
1.200
0
200 400 600 800 1000
LOAD CURRENT (µA)
V_DD
5.00
Load Regulation
4.95
4.90
4.85
4.80
0
5 10 15 20 25
LOAD CURRENT (mA)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
Oscillator Frequency
vs. Supply Voltage
4 8 12 16 20 24 28 32
SUPPLY VOLTAGE (V)
June 2000