APW7000 datasheet(11/18 Pages) ANPEC

Part #	APW7000

Description	1X/1.5X/2x Charge Pump White LED Driver

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Manufacturer	ANPEC [Anpec Electronics Coropration]

Direct Link	http://www.anpec.com.tw

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11 / 18 page

Copyright

Rev. A.2 - Feb., 2009

APW7000

www.anpec.com.tw

11

Function Description (Cont.)

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5

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ILED (mA)

LED Current Setting (Cont.)

Figure 1. R

SET Value vs. LED Current

Shutdown/Enable

Pull the EN above 1.3V to enable the device and pull EN

pin below 0.3V to disable the device. In shutdown mode,

all internal control circuits are turned off and the quies-

cent current is below 2

µA. When the device exits shut-

down mode, the output has soft-start function as the in-

put voltage startup.

Over-Voltage Protection

If any of LEDs is failed or unused LED channel is not

connected to the VOUT, the charge pump mode will go

into 2x mode and the output voltage will be pumped to 2

times the input voltage. If the output voltage is over 5.5V,

the over-voltage protection circuit will limit the output volt-

age to approximately 5.5V.

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APW7000 Datasheet(PDF) 11 Page - Anpec Electronics Coropration

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