AP3607 BCD Semiconductor, AP3607 Datasheet - Page 14

• Manufacturer Part Number: AP3607
• Description: 4/6 Channel Charge PUMP Current SINK FOR LED Driver
• Manufacturer: BCD Semiconductor

Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER
AP3606/AP3607
Digital Dimming Operating Diagram
Figure 32. Digital Dimming Operating Diagram of AP3606/AP3607
Note 3: The dimming control can be achieved by applying a pulse to the EN pin. When the low level duration
time of pulse is between T
and T
, and the high level duration time is larger than T
, the LED current
LOmin
LOmax
HImin
will decrease 1/16. If the low level duration time is larger than T
the IC will be turned off. When
SHDNmax,
AP3606/AP3607 is powered on, the WLED is in full brightness. And it will keep maximum current until the
pulse is detected. After 15 pulses the WLED current decreases to 1/16 of full brightness. It will increase to full
brightness if a pulse is added to EN pin then.
Dec. 2008 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
14