Product category: Power Supply ICs and Controllers
News Release from: Monolithic Power Systems (MPS) | Subject: MP1528
Edited by the Electronicstalk Editorial Team on 21 November 2005
Convertor drives nine-LED
strings from one cell
The MP1528 is a step-up convertor designed to drive nine white LEDs in series at 20mA from a single-cell lithium ion battery
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New from Monolithic Power Systems, the MP1528 is a step-up convertor designed to drive nine white LEDs in series at 20mA from a single-cell lithium ion battery. With a distinctive wide input voltage range of 2.7 to 36V, the MP1528 is suitable for portable applications such as PDA, cellphones and cameras, but is also useful for LCD backlight applications in home appliances and industrial systems.
The integrated power switch ensures a maximum drive current of at least 20mA even under the most challenging input/output voltage conditions.
The MP1528 operates at high efficiency and regulates LED current via a fixed-off-time switch control loop determined by a low 0.4V feedback threshold.
LED brightness is easily adjusted by applying a DC voltage or a PWM signal to the driver.
Additional features of the MP1528 include integrated soft-start, overcurrent, thermal and output overvoltage protection.
The MP1528 is available in a tiny 6-pin 3 x 3mm QFN package and requires only six external components for a compact complete solution.
Sample and evaluation boards are available for immediate delivery.
Pricing starts at $1.15 in 1000-piece quantities.
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