MIC2544 Datasheet, PDF (6/12 Pages) Micrel Semiconductor – Programmable Current Limit High-Side Switch Preliminary Information

MIC2544/2548
Typical Characteristics
Output On-Resistance
vs. Supply Voltage
100
90
80
T_A = 27°C
70
60
50
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
On-State Supply Current
vs. Temperature
140
120
100
5.0V
80
3.3V
60
2.7V
40
20
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Enable Threshold Voltage
vs. Supply Voltage
2.0
1.9
T_A = 27°C
1.8
1.7
V_EN RISING
1.6
1.5
1.4
V_EN FALLING
1.3
1.2
1.1
1.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
Output Fall Time
vs. Temperature
2.5
R_L = 44Ω
2.0
2.7V
1.5
3.3V
1.0
5.0V
0.5
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
MIC2544/2548
Output On-Resistance
vs. Temperature
120
100
2.7V
3.3V
80
5.0V
60
40
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Off-State Supply Current
vs. Temperature
0.4
R_L = 44Ω
0.3
0.2
5.0V
3.3V
0.1
2.7V
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Enable Threshold Voltage
vs. Temperature
2.0
1.8
V_EN RISING
1.6
1.4
V_EN FALLING
1.2
1.0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
2000
1500
Current Limit
vs. R_SET
V_IN = 5V
1000
500
0
100
I_SHORT
I_SET
1000
R_SET (Ω)
I_TH
5000
6
Micrel
On-State Supply Current
vs. Supply Voltage
140
120
100
T_A = 27°C
80
60
40
20
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
Off-State Supply Current
vs. Supply Voltage
0.10
0.09
0.08
0.07
T_A = 27°C
0.06
0.05
0.04
0.03
0.02
0.01
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
Rise Time
vs. Temperature
7
6
2.7V
5
4
3.3V
3
5.0V
2
1
R_L = 44Ω
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Output Current
vs. Output Voltage
2000
1500
1000
R_SET = 150
V_IN = 5V
R_SET = 470
500
R_SET = 2.3k
0
0123456
OUTPUT VOLTAGE (V)
June 2000