参数资料
型号: MIC4802YME
厂商: Micrel Inc
文件页数: 3/12页
文件大小: 0K
描述: IC WHITE LED DVR 800MA 1CH 8SOIC
标准包装: 95
恒定电流:
拓扑: 线性(LDO),PWM
输出数: 1
内部驱动器:
类型 - 主要: 通用
类型 - 次要: 白色 LED
电源电压: 3 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm Width)裸露焊盘
供应商设备封装: 8-SOIC-EP
包装: 管件
其它名称: 576-3857-5
Micrel Inc.
Absolute Maximum Ratings (1)
Main Input Voltage (V IN ) .................................. –0.3V to +6V
Enable Input Voltage (V EN ).............................. –0.3V to +6V
LED Driver Voltage (V D1 ) ................................ –0.3V to +6V
Power Dissipation .....................................Internally Limited
Lead Temperature (soldering, 10sec.)....................... 260°C
Storage Temperature (T s ) ......................... –65°C to +150°C
MIC4802
Operating Ratings (2)
Supply Voltage (V IN )..................................... +3.0V to +5.5V
Enable Input Voltage (V EN ) .................................... 0V to V IN
LED Driver Voltage (V D1 ) ....................................... 0V to V IN
Junction Temperature (T J ) ........................ –40°C to +125°C
Junction Thermal Resistance
EPAD SOIC-8L ( θ JA )..........................................41°C/W
Electrical Characteristics
V IN = V EN = 5V, R SET = 6.19k ? ; V D1 = 1.2V; T J = 25 ° C, bold values indicate –40 ° C ≤ T J ≤ 125 ° C; unless noted.
Parameter
Conditions
Min
Typ
Max
Units
Current Accuracy
(3)
Drop-out
Ground/Supply Bias Current
Shutdown Current
Where I LED = 90% of LED current seen at
V DROPNOM = 1.2V, 100% brightness level
I OUT = 830mA
V EN = 0V
747
830
280
4.1
0.01
913
500
5.7
1
mA
mV
mA
μA
PWM Dimming
Enable Input Voltage (V EN )
Logic Low
Logic High
1.2
0.2
V
V
Enable Input Current
Current Source Delay
(50% levels)
Current Source Transient Time
(10%-90%)
V IH > 1.2V
Shutdown to on
Standby to on
On to Standby
T RISE
T FALL
0.01
40
2
0.3
1
0.3
1
60
μA
μs
μs
μs
μs
μs
Stand-by to Shutdown Time
V EN = 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 R SET resistance.
January 2011
3
M9999-013111-B
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