MIC3202 Datasheet, PDF (6/19 Pages) Micrel Semiconductor – High-Brightness LED Driver with Integrated MOSFET and High-Side Current Sense

Micrel, Inc.
Typical Characteristics (Continued)`
VIN Supply Current
vs. Temperature
2.0
VIN =VIN = 12V
VLED = OPEN
1.5 ^{ILED = 0A}
Shutdown Current
vs. Temperature
0.4
VIN = 12V
VEN = 0V
0.3
1.0
0.2
0.5
0.1
0.0
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
340
330
VIN = 12V
VLED = 3.5V
ILED = 1A
L = 47uH
320
0
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
Enable Bias Current
vs. Temperature
40
VIN =VEN = 12V
VLED = OPEN
35
ILED = 0A
30
310
25
300
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
CS Voltage
vs. Temperature
250
225
200
175
VCS MAX
VCS MIN
VIN = 12V
VLED = 3.5V
ILED = 1A
L = 47uH
150
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
Switch Voltage
vs. Switch Current
300
250
200
150
100
50
0
0.0
VLED = 3.5V
VIN = 12V
0.3
0.5
0.8
1.0
SWITCH CURRENT (A)
20
-50
-20 10 40 70 100 130
TEMPERATURE (°C)
Switch RDSON
vs. Temperature
450
400
350
300
250
200
-50
VIN = 12V
ISW = 0.2A
-20 10 40 70 100 130
TEMPERATURE (°C)
Switch RDSON
vs. Switch Current
290
285
280
275
270
0.0
VLED = 3.5V
VIN = 12V
0.3
0.5
0.8
1.0
SWITCH CURRENT (A)
September 2010
6
MIC3202
VIN UVLO Threshold
vs. Temperature
4.5
Rising
4.0
3.5
3.0
-50
Falling
VIN = 12V
VLED = 3.5V
ILED = 1A
L = 47uH
-20 10 40 70 100 130
TEMPERATURE (°C)
VCC Voltage
vs. Temperature
5.20
5.10
5.00
4.90
4.80
-50
VIN = 12V
VLED = OPEN
ILED = 0A
-20 10 40 70 100 130
TEMPERATURE (°C)
Case Temperature
vs. Input Voltage
50
40
30
20
6
300
250
200
150
100
50
0
0.0
VLED = 3.5V
ILED = 1A
L = 47uH
1oz/3.5 Sq Inch
14
22
30
38
INPUT VOLTAGE (V)
Switch Voltage
vs. Switch Current
VLED = 3.5V
VIN = 12V
0.3
0.5
0.8
1.0
SWITCH CURRENT (A)
M9999-091710-A