mic3202 Micrel Semiconductor, mic3202 Datasheet - Page 5

• Manufacturer Part Number: mic3202
• Description: High-brightness Led Driver With Integrated Mosfet And High-side Current Sense
• Manufacturer: Micrel Semiconductor

Typical Characteristics
Micrel, Inc.
September 2010
125
100
100
0.5
0.4
0.3
0.2
0.1
0.0
75
50
25
95
90
85
80
75
1000
0
750
500
250
6
6
6
0
1LED
6
2LED
I
L = 47uH
LED
1LED
I
L = 47uH
LED
= 1A
V
2LED
Switching Frequency
= 1A
IN
14
14
14
vs. Input Voltage
ENABLE VOLTAGE (V)
Enable Bias Current
Shutdown Current
vs. Input Voltage
vs. Input Voltage
INPUT VOLTAGE (V)
vs. Enable Voltage
INPUT VOLTAGE (V)
14
4LED
INPUT VOLTAGE (V)
4LED
Efficiency
22
22
22
22
6LED
6LED
V
EN
= 0V
V
V
I
LED
30
30
30
IN
LED
30
= V
= 0A
8LED
=OPEN
8LED
EN
38
38
38
38
1.02
1.01
1.00
0.99
0.98
100%
5.050
5.025
5.000
4.975
4.950
100
75%
50%
25%
75
50
25
0%
0
6
6
6
6
I
L = 47uH
1LED
LED
1LED
2LED
I
L = 47uH
LED
2LED
= 1A
LED Current Normalized
= 1A
Dimming Bias Current
vs. Dimming Voltage
14
14
DIMMING VOLTAGE (V)
vs. Input Voltage
14
14
vs. Input Voltage
vs. Input Voltage
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
4LED
INPUT VOLTAGE (V)
Duty Cycle
V
4LED
CC
5
Voltage
22
22
22
22
6LED
6LED
V
I
LED
V
V
I
LED
LED
30
30
30
30
IN
LED
= 0A
= V
= OPEN
= 0A
=OPEN
DIM
8LED
8LED
38
38
38
38
3.0
2.5
2.0
1.5
1.0
0.5
0.0
425
375
325
275
225
-1.0%
-2.0%
250
225
200
175
150
2.0%
1.0%
0.0%
6
6
6
6
I
L = 47uH
1LED
LED
2LED
= 1A
LED Current Accuracy
14
14
14
V
INPUT VOLTAGE (V)
vs. Input Voltage
14
INPUT VOLTAGE (V)
vs. Input Voltage
vs. Input Voltage
vs. Input Voltage
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
IN
V
V
4LED
CS MAX
CS MIN
Switch R
Supply Current
CS Voltage
22
22
22
22
M9999-091710-A
6LED
DSON
V
V
NO-SWITCHING
OUT
CC
V
I
LED
LED
V
I
LED
= 5V
LED
30
30
= OPEN
30
=1A
30
=3.5V
= 1A
MIC3202
= 3.5V
8LED
38
38
38
38