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MIC4812 Datasheet, PDF (3/12 Pages) Micrel Semiconductor – High Current 6 Channel Linear WLED Driver with DAM™ and Ultra Fast PWM™ Control
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Micrel Inc.
MIC4812
Absolute Maximum Ratings(1)
Main Input Voltage (VIN) .................................. –0.3V to +6V
Enable Input Voltage (VEN).............................. –0.3V to +6V
LED Driver Voltage (VD1-D6) ............................ –0.3V to +6V
Power Dissipation .....................................Internally Limited
Lead Temperature (soldering, 10sec.)....................... 260°C
Storage Temperature (Ts) .........................–65°C to +150°C
ESD Rating(3)............................................................... 1.5kV
Operating Ratings(2)
Supply Voltage (VIN)..................................... +3.0V to +5.5V
Enable Input Voltage (VEN) .................................... 0V to VIN
LED Driver Voltage (VD1-D6) ................................... 0V to VIN
Junction Temperature (TJ) ........................ –40°C to +125°C
Junction Thermal Resistance
ePad MSOP-10L (θJA) ....................................76.7°C/W
Electrical Characteristics
VIN = VEN = 5V, RSET = 8.25kΩ; VD1-D6 = 1.2V; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ 125°C; unless noted.
Parameter
Current Accuracy(4)
Matching(5)
Conditions
Min
Typ
Max
96
101
106
1
3.6
Drop-out
Where ILED = 90% of LED current seen at
VDROPNOM = 1.2V, 100% brightness level
190
320
Ground/Supply Bias Current
3.2
4.2
Shutdown Current
VEN = 0V
0.01
1
PWM Dimming
Enable Input Voltage (VEN)
Logic Low
0.2
Logic High
1.2
Enable Input Current
VIH > 1.2V
0.01
1
Current Source Delay
(50% levels)
Shutdown to on
Standby to on
On to Standby
40
60
1
0.3
Current Source Transient Time TRISE
1
(10%-90%)
TFALL
0.3
Stand-by to Shutdown Time
VEN = 0V
10
20
40
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. As determined by average current of all channels in use and all channels loaded.
5. The current through each LED meets the stated limits from the average current of all LEDs.
Units
mA
%
mV
mA
µA
V
V
µA
µs
µs
µs
µs
µs
ms
January 2011
3
M9999-010511-A
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