APW7008(2009_06) Ver la hoja de datos (PDF) - Anpec Electronics

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APW7008
(Rev.:2009_06)

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

Anpec Electronics 

APW7008

Typical Operating Characteristics (Cont.)

Line Transient Response in 1.5x to 2x Mode

VIN (1V/div)

4 LEDs at 20mA, VF=3.1V

VIN=2.8V to 3.4V

VOUT (1V/div)

ILED (20mA/div)

TIME (0.1ms/div)

Pin Description

PIN

NO.

NAME

FUNCTION

1

EN

Enable Input Pin. The EN pin is an active high Control. Pull EN pin above 1.3V to enable the device; pull EN

pin below 0.3V to disable the device.

2

CTRL0

3

CTRL1 LED On/Off Control Pin. Allow disabling or enabling a combination of LEDs.

4

CTRL2

5

ISET LED Current Set Input. Connect a resistor from ISET to GND to set the LED current. VISET is typically 1.2V.

6

VOUT Output Voltage Pin. Connect VOUT to the LED anode. Connect a 1µF capacitor from VOUT to GND.

7

VIN Supply Voltage Input Pin. Connect a 1µF capacitor from VIN to GND.

8

C2+ Bucket Capacitor1 Positive Terminal. Connect a 1µF capacitor from C2+ to C2-.

9

C2- Bucket Capacitor1 Negative Terminal. Connect a 1µF capacitor from C2+ to C2-.

10

C1+ Bucket Capacitor1 Positive Terminal. Connect a 1µF capacitor from C1+ to C1-.

11

C1- Bucket Capacitor1 Negative Terminal. Connect a 1µF capacitor from C1+ to C1-.

12

GND Device Ground Pin.

13

ILED4

14

ILED3 LEDs Cathode Connection. The LED current flows from VOUT through LED into ILED_ pin. The charge

15

ILED2 pump regulates the lowest VILED to 180mV. Connect ILED_ pin to VOUT if the LED is not used.

16

ILED1

Copyright © ANPEC Electronics Corp.

11

Rev. A.4 - Jun., 2009

www.anpec.com.tw

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