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| MIC3205 Datasheet, PDF (3/23 Pages) Micrel Semiconductor – High-Brightness LED Driver Controller with Fixed-Frequency Hysteretic Control | |||
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Micrel, Inc.
MIC3205
Absolute Maximum Ratings (1)
VIN to PGND .................................................. ï0.3V to ï«42V
VINS to PGND......................................... ï0.3V to (VIN+0.3V)
VCC to PGND ................................................ ï0.3V to ï«6.0V
CS to PGND ........................................ ï0.3V to (VIN ï« 0.3V)
EN to AGND ........................................ ï0.3V to (VIN ï« 0.3V)
DIM to AGND ...................................... ï0.3V to (VIN ï« 0.3V)
CTIMER to AGND .............................. ï0.3V to (VCC ï« 0.3V)
DRV to PGND .................................... ï0.3V to (VCC ï« 0.3V)
PGND to AGND .......................................... ï0.3V to ï« 0.3V
Junction Temperature ................................................ 150ï°C
Storage Temperature Range .................... ï60°C to ï«150ï°C
Lead Temperature (Soldering, 10sec) ....................... 260ï°C
ESD Ratings (3)
HBM ...................................................................... 1.5kV
MM .........................................................................200V
Operating Ratings (2)
Supply Voltage (VIN).......................................... 4.5V to 40V
Enable Voltage (VEN) .............................................. 0V to VIN
Dimming Voltage (V ) DIM .................................................................0V to VIN
Junction Temperature (TJ) ........................ ï40ï°C to ï«125ï°C
Junction Thermal Resistance
10-pin 3x3 MLF (ï±JA).......................................60.7ï°C/W
10-pin 3x3 MLF (ï±JC).......................................28.7ï°C/W
Electrical Characteristics (4)
VIN = VEN = VDIM = 12V; CVCC = 4.7µF; TJ = 25ï°C; bold values indicate ï40ï°C ï£ TJ ï£ ï«125ï°C, unless noted.
Symbol
Parameter
Condition
Min.
Typ.
Input Supply
VIN
Input Voltage Range (VIN)
IS
Supply Current
DRV = Open
4.5
1.3
ISD
Shutdown Current
VEN = 0V
UVLO
VIN UVLO Threshold
VIN Rising
3.2
4
UVLOHYS
VIN UVLO Hysteresis
600
VCC Supply
VCC
VCC Output Voltage
VIN = 12V, ICC = 5mA
4.5
5
Current Sense
âVCS
Average Current Sense
Threshold
âVCS =VINS ï VCS
190
200
188
200
âtCS
Current Sense Response
Time
VCS Rising
VCS Falling
50
70
ICS
CS Input Current
VIN = VCS
0.5
VIN =12V, VLED =3V,
âVHYS
Sense Voltage Hysteresis (5)
L=47µH, FSW =250kHz,
46
VD = 0.7V, ILED = 1A
Frequency
ITIMER
CTIMER Pull-up Current
66
VCTREF
CTIMER Threshold
1.189
(4*ITIMER)/
VCTREF
Frequency Coefficient (6)
1.776 Ã 10-4 2.22 Ã 10-4
Max.
40
3
2
4.5
5.5
210
212
10
2.664 Ã 10-4
Units
V
mA
µA
V
mV
V
mV
mV
ns
ns
µA
mV
µA
V
A/V
October 2012
3
M9999-102312-A
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