AiT Semiconductor A8168
The A8168 Series is a fixed frequency, constant current step-up DC/DC converter idea for driving LEDs used in backlighting application on cellular phones, PDAs and digital cameras etc. The A8168 is available in SOT-26 Package.| Part No. | A8168 |
|---|---|
| Datasheet | A8168 Download |
| Manufacturer |  AiT Semiconductor |
| Description | SERIES WHITE LED BACKLIGHT DRIVER |
| Buy | Stock & Price |
DESCRIPTION
FEATURES
Output voltage of up to 17.5V can be derived, and from a 3.2V input four white LED’s can be driven in series or alternatively, using a 2.5V input, a network of two parallel legs with three in each may be driven. Luminance of the LED’s is controlled by changing the duty cycle of a PWM signal applied to the CE pin.●
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● Oscillation frequency : 1.0 MHZ Output voltage range ; up to 17.5V externally set-up reference voltage 0.2V On resistance : 2.0Ω Efficiency : 88%(When driving 3 white LEDs in series Vin=3.6V ILED=20mA) Control : PWM control Stand-by Current : ISTB=1.0μA(MAX) Load capacitor : 0.22μF, ceramic Lx Limit Current : 300mA Available in SOT-26 package In addition, an internal MOSFET with an RDS(ON) of 2Ω is used. Allow profile and small board area solution can be achieved using a chip coil and an ultra small ceramic output capacitor (CL) of 0.22uF. The A8168 is available in SOT-26 Package.
APPLICATIONS
● For White LED Drivers● Mobil phones, PHS
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