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MIC4802 데이터시트(PDF) 3 Page - Micrel Semiconductor

부품명 MIC4802
상세설명  High Efficiency 800mA Single Channel Linear WLED Driver with Ultra Fast PWM??Control
PDF  12 Pages
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제조업체  MICREL [Micrel Semiconductor]
홈페이지  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC4802 데이터시트(HTML) 3 Page - Micrel Semiconductor

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Micrel Inc.
MIC4802
January 2011
3
M9999-013111-B
Absolute Maximum Ratings(1)
Main Input Voltage (VIN) .................................. –0.3V to +6V
Enable Input Voltage (VEN).............................. –0.3V to +6V
LED Driver Voltage (VD1) ................................ –0.3V to +6V
Power Dissipation .....................................Internally Limited
Lead Temperature (soldering, 10sec.)....................... 260°C
Storage Temperature (Ts) .........................–65°C to +150°C
Operating Ratings(2)
Supply Voltage (VIN)..................................... +3.0V to +5.5V
Enable Input Voltage (VEN) .................................... 0V to VIN
LED Driver Voltage (VD1) ....................................... 0V to VIN
Junction Temperature (TJ) ........................–40°C to +125°C
Junction Thermal Resistance
EPAD SOIC-8L (
θJA)..........................................41°C/W
Electrical Characteristics
VIN = VEN = 5V, RSET = 6.19kΩ; VD1 = 1.2V; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ 125°C; unless noted.
Parameter
Conditions
Min
Typ
Max
Units
Current Accuracy
(3)
747
830
913
mA
Drop-out
Where ILED = 90% of LED current seen at
VDROPNOM = 1.2V, 100% brightness level
280
500
mV
Ground/Supply Bias Current
IOUT = 830mA
4.1
5.7
mA
Shutdown Current
VEN = 0V
0.01
1
µA
PWM Dimming
Logic Low
0.2
V
Enable Input Voltage (VEN)
Logic High
1.2
V
Enable Input Current
VIH > 1.2V
0.01
1
µA
Current Source Delay
(50% levels)
Shutdown to on
Standby to on
On to Standby
40
2
0.3
60
µs
µs
µs
Current Source Transient Time
(10%-90%)
TRISE
TFALL
1
0.3
µs
µs
Stand-by to Shutdown Time
VEN = 0V
10
20
40
ms
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. As determined by average current based on RSET resistance.



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