PIC8518
High Efficiency, Fixed
Frequency WLED Driver
FEATURES
On Board Power MOSFET
Drives up to 8 Series White LEDs
Up to 87% Efficiency
1.2 MHz Fixed Switching Frequency
Open Load Shutdown
Low 104mV Feedback Voltage
Soft Start/PWM Dimming
UVLO, Thermal Shutdown
Internal Current Limit
Available in 6L-SOT26
The PIC8518 is a step up converter designed for
driving up to 8 series white LEDs from 5V input.
The PIC8518 uses current mode, fixed frequency
architecture to regulate the LED current, which is
measured through an external current sense
resistor. Its low 104mV feedback voltage reduces
power loss and improves efficiency. The OV pin
monitors the output voltage and turns off the
converter if an over-voltage condition is present
due to an open circuit condition.
The PIC8518 includes under-voltage lockout,
current limiting and thermal overload protection
preventing damage in the event of an output
overload. The PIC8518 is available in small 6-pin
TSOT26.
DESCRIPTION
APPLICATIONS
Cellular and cordless phones
Wireless LAN cards
Palmtop computers
Personal Communication equipment
Pen drives
Bluetooth devices
TYPICAL APPLICATION CIRCUIT
www.picsemi.com
Road-8, House-2/A, Baridhara Diplomatic Area, Dhaka-1212, Phone: +880-2- 8861966, Fax: +880-2-8835244
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PICSEMI [ POWER IC LTD. ]
