Datasheet MIC4680 (Microchip) - 5

Micrel, Inc. MIC4680 Typical Characteristics 4.99
4.98
4.97
4.96 3.5
3.0 5 10 15 20 25 30
INPUT VOLTAGE (V) 2.0
1.5
1.0 210 200 190 180
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C) 80 4
3
2
1 VIN = 12V 1.236
1.234
1.232 VIN = 12V
VOUT = 5V
IOUT = 1A 1.230 1.228
-50 -25 0 25 50 75 100 125 150
TEMPERATURE (°C) 40
30
20
10 70
60 12V 24V 7V 50
40
30
20
10 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
OUTPUT CURRENT (A) March 2008 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
OUTPUT CURRENT (A) 5 EFFICIENCY (%) 50 24V 6V 35 Frequency vs.
Supply Voltage 198
197
0 5 10 15 20 25 30
SUPPLY VOLTAGE (V) 35 Saturation Voltage
vs. Temperature 1.4
1.2
1.0
0.8
0.6
0.4
0.2 VIN = 12V
VOUT = 5V
ILOAD = 1A 0
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C) 5V Output
Efficiency 90 EFFICIENCY (%) 12V 10 15 20 25 30
INPUT VOLTAGE (V) 199 1.6 80 60 5 200 196 Feedback Voltage
vs. Temperature 1.238 70 0 202 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
OUTPUT CURRENT (A) 1.240 3.3V Output
Efficiency 40 201 1.242
FEEDBACK VOLTAGE (V) 220 60 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
OUTPUT CURRENT (A) 5 0 Frequency vs.
Temperature 0 Current Limit
Characteristic 6 VIN = 12V
VSHDN = VIN 80 20 Shutdown Current
vs. Temperature 0
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C) FREQUENCY (kHz) 4.98 35 0.5 EFFICIENCY (%) 5.00 4.96 0 2.5 0 5.02 CURRENT (µA) 5.01
5.00 100
VIN = 12V
VOUT = 5V FREQUENCY (kHz) OUTPUT VOLTAGE (V) 5.03
5.02 4.0 CURRENT (µA) 5.04 IOUT = 1.0A 5.05
5.04 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 5.06 Shutdown Current
vs. Input Voltage Load Regulation SATURATION VOLTAGE (V) Line Regulation 100
90
80
70
60 12V Output
Efficiency 15V 24V 50
40
30
20
10
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
OUTPUT CURRENT (A) M9999-032808