ACE714B Description
The ACE714B is a fixed frequency, constant current step-up DC/DC converter ideal for driving LEDs used in backlighting applications on cellular phones, PDAs and digital cameras etc. Output voltage of up to 28V can be derived, and from a 2.5V input three white LED’s can be driven in series. Luminance of the LED’s is controlled by changing the duty cycle of a PWM signal applied to the CE pin.
ACE714B Key Features
- Input voltage range : 2.5V-5.5V
- Output voltage range : up to 28V
- Low 104mV feedback voltage
- Oscillation frequency : 1.2MHz
- Typical Efficiency : 88%
- Control : PWM control
- Stand-by Current : <1μA
- High Supply Capability: Deliver 10V 300mA from 3.5V supply
- Lx limit Current : 1.3A
- For White