参数资料
型号: MIC2845A-PGYMT TR
厂商: Micrel Inc
文件页数: 5/18页
文件大小: 0K
描述: IC WHITE LED DVR 6CH BKLT 14TMLF
标准包装: 1
恒定电流:
拓扑: 线性(LDO),PWM
输出数: 6
内部驱动器:
类型 - 主要: 背光,闪灯/白光
类型 - 次要: 白色 LED
频率: 500kHz
电源电压: 3 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 14-UFQFN 裸露焊盘,14-TMLF?
供应商设备封装: 14-TMLF?(2.5x2.5)
包装: 标准包装
工作温度: -40°C ~ 125°C
其它名称: 576-3656-6
Micrel Inc.
MIC2845A
LDOs
V IN = V EN1 = V EN2 = 3.8V, V END = 0V, C OUT1 = C OUT2 = 1μF, I OUT1 = I OUT2 = 100μA; T J = 25 ° C, bold values indicate –40 ° C ≤
T J ≤ 125 ° C; unless noted.
Parameter
Output Voltage Accuracy
Conditions
Variation from nominal V OUT
Min
–2
Typ
Max
+2
Units
%
–3
+3
%
V IN Line Regulation
0.02
0.3
%/V
Load Regulation
I OUT = 100μA to 150mA
7
mV
Dropout Voltage (7)
Ground Pin Current
Ground Pin Current in Shutdown
Ripple Rejection
V OUT ≥ 3.0V, I OUT = 150mA
V EN = 0V
f = 1kHz; C OUT = 2.2μF
150
35
0.05
65
330
70
1
mV
μA
μA
dB
Current Limit
Output Voltage Noise
V OUT =0V
Frequency 10Hz to 100kHz
175
300
200
500
mA
μV RMS
Enable Inputs (EN1, EN2)
Enable Input Voltage
Logic Low
Logic High
1.2
0.2
V
V
Enable Input Current
Turn-on Time
V EN1 = V EN2 = 1.2V
C OUT = 1μF; 90% of V OUT
0.01
50
1
100
μA
μs
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any T A (ambient temperature) is P D(max) = (T J(max) – T A ) / θ JA . Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown (150°C).
4. Devices are ESD sensitive. Handling precautions recommended. Human Body Model (HBM), 1.5k ? in series with 100pF.
5. As determined by average current of all channels in use and all channels loaded.
6. The current through each channel meets the stated limits from the average current of all channels.
7. Dropout voltage is defined as the input-output differential at which the output voltage drops 2% below its nominal value measured at V IN = V OUT + 1V.
April 2010
5
M9999-041210-C
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