AK7864A Datasheet, PDF (3/13 Pages) Asahi Kasei Microsystems – 3 channel LED driver with Charge Pump

[AK7864A]
Functional Description
 Power Down
Set PDN to Low at VDD power on, AK7864A will be in power down state.
In power down state, the current inside AK7864A will be stopped, LED_R/G/B will be High-Z
and CPOUT will be Low.
 Circuit reset
PDN is also carrying out the reset of an internal counter, please start supplying VDD to AK7864A by
PDN=Low.
The period of soft start of charge pump is decided at the internal counter.
When soft start does not operate correctly, at the time of starting, incoming current will be large and
the device may break.
MS1336 - E - 00
3
2012/01