CM9142 datasheet(4/14 Pages) CALMIRCO

Part #	CM9142

Description	Two Group, 4 and 2, WLED Driver, Different Current Settings

Download	14 Pages

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Manufacturer	CALMIRCO [California Micro Devices Corp]

Direct Link	http://www.calmicro.com

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4 / 14 page

4

490 N. McCarthy Blvd., Milpitas, CA 95035-5112

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Tel: 408.263.3214

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Fax: 408.263.7846

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www.cmd.com

04/26/06

CM9142

PRELIMINARY

100 mV/

div

Iin

Vout

Vin

20mA/

div

50mV/

div

1us/div

Typical Waveforms

Cin=C2=C3=Cout=1uF, Iout=120mA

1.5x mode

100 mV/

div

20mA/

div

50mV/

div

Iin

Vout

Vin

1us/div

1.0x mode

Typical Waveforms

Cin=C2=C3=Cout=1uF, Iout=120mA

LED Current vs. Vin

5

10

15

20

25

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Input Voltage (V)

Vout

EN

.5ms/div

Startup

Cin=C2=C3=Cout=1uF, Iout=120mA

1V/

div

200mA/

div

2V/

div

Iout=120mA

Iout=60mA

Iout=30mA

Source Current

25

50

75

100

125

150

175

200

3.03.5

4.04.5

5.05.5

6.0

Input Voltage (V)

Vled=3.2V

Charge Pump Efficiency

60

70

80

90

100

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Input Voltage (V)

Vled=3.2V

Iout=30mA

Iout=60mA

Iout=120mA

Iin

Typical Performance Curves

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CM9142 Datasheet(PDF) 4 Page - California Micro Devices Corp

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