Single Chip Drives Power LEDs Up to 2A

The SP7000 is a non-synchronous voltage-mode PWM step-down converter. It is optimised for driving high-power LEDswith up to 2A of continuous current.

A wide 4.5V to 29V input-voltage range allows for single-supply operation fromindustry-standard 5V, 12V or 24V power rails.

A 1.2MHz constant operating frequency allows operation with smaller external components; and internal control-loop compensation reduces the LED system’s overall component count. As well as cutting the PCB space required by external components, the SP7600 itself is offered in a compact thermally-enhanced 8-pin SO package.

With a 2.5% output set-point accuracy and input feed-forward control, the SP7600 also improves stability as well as transient and regulation responses. Dimming and shutdownmodes are provided via an enable function when required. Programmable overcurrent and under-voltage lockout protection ensures safe operation under abnormal operating conditions.

 

FEATURES 4.5V to 29V single-rail input voltage 2A continuous output current 1.2MHz constant switching frequency operation Internal control-loop compensation PWM and analogue dimming Programmable over-current protection Thermally-enhanced package

APPLICATIONS General lighting and displays Architectural lighting Security and traffic signals Medical and industrial instrumentation Projectors

 

 

 

 

• NIC Components’ Quick Kit, page 090119

 

 

The SP7600EB evaluation board is available to members of the Future Board Club. To apply for the development board, and membership of the Board Club, go to www.my-boardclub.com/manf-offers.htm This offer is free and subject to qualification.

 

Exar / SP7600