APW7000 查看數據表（PDF） - Anpec Electronics

零件编号

产品描述 (功能)

比赛名单

APW7000

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

Anpec Electronics 

APW7000

Function Description (Cont.)

LED Current Setting (Cont.)

400

350

300

250

200

150

100

50

0

0

5

10 15 20 25 30

ILED (mA)

Figure 1. RSET 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 2µA. 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.

Copyright © ANPEC Electronics Corp.

11

Rev. A.2 - Feb., 2009

www.anpec.com.tw

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