MIC2544A Datasheet, PDF (9/19 Pages) Micrel Semiconductor – Programmable Current Limit High-Side Switch

Micrel, Inc.
Typical Characteristics (Continued)
UVLO Threshold
vs. Temperature
3.0
UTH
2.5
2.0
LTH
1.5
1.0
0.5
Hysteresis
0.0
-40 -15 10 35 60 85
TEMPERATURE (°C)
VIN - VOUT
vs. Output Current
160
140
120 ^{VIN = 5V}
100
85
25
80
60
-40
40
20
0
0 0.25 0.5 0.75 1 1.25 1.5
OUTPUT CURRENT (A)
2500
RSET (Ω)
vs. Output Current
2000
1500
1000
RSET = 230
I_LIMIT
500
0
0 0.25 0.5 0.75 1 1.25 1.5
OUTPUT CURRENT (A)
Output Current
1.6
vs. RSET
1.4
1.2
1.0
0.8
0.6
0.4
I_OUT
0.2
0.0
0
I_OUT_Mea
500 1000
1500
2000
2500
RSET (Ω)
Fall Time
vs. Input Voltage
140
-40°C
120
100
25°C
80
85°C
60
40
20
0
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Rise Time
vs. Temperature
4.5
3.3V
4.0
3.5
3.0
2.5
5V
2.0
1.5
1.0
0.5
0.0
-40 -15 10 35 60 85
TEMPERATURE (°C)
MIC2544A/2548A
VIN - VOUT
vs. Output Current
160
140
120 ^{VIN = 3.3V}
85
100
25
80
60
-40
40
20
0
0 0.25 0.5 0.75 1 1.25 1.5
OUTPUT CURRENT (A)
Rise Time
vs. Input Voltage
6
-40°C
5
4
3
85°C
25°C
2
1
0
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
140
120
100
80
60
40
20
0
-40
Fall Time
vs. Temperature
3.3V
5V
-15 10 35 60 85
TEMPERATURE (°C)
April 2010
9
M9999-043010