Product category:
Power Supply ICs and Controllers
News Release from: Semtech | Subject: SC603
Edited by the Electronicstalk Editorial
Team on 15 May 2003
LED driver saves on space and power
The SC603 supplies regulated LED power for camera flash or backlight for colour LCDs and keypads in cellphones, PDAs and other portable electronics.
New from Semtech, the SC603 is an economical charge pump regulator used to supply power to LEDs used for backlighting colour displays and keypads or camera flashes in battery-operated portable electronics, such as cellphones, smart phones, PDAs and GPS devices The SC603 is a small footprint (3 x 3mm), low profile (1mm) MLP-Micro 10-lead component, which is now available as an environmentally sensitive, lead-free package
This article was originally published on Electronicstalk on 16 Jul 2001 at 8.00am (UK)
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The new device provides designers with the industry's most dense, low-cost, power-efficient, and easy-to-implement LED driver solution, extending Semtech's lead as the dominant supplier of charge pump regulators for handheld electronics.
The SC603 regulator supports designs requiring up to 200mA (at 4.5V) or 160mA (at 5.0V) of output current, at input voltages from 2.5 to 6.5V, making it well suited for lithium-ion powered systems.
The user-selectable output voltages and pump frequencies (262 or 650kHz) support a wide range of LEDs, while maximising power efficiency.
The SC603 leverages Semtech's mAhXLife technology, which yields highly efficient, tightly regulated output voltages to help preserve battery life.
The device features an enable pin to shutdown circuit operation; thus, when disabled, the part only uses less than 1uA of operating current.
The SC603's inductorless design also minimises electromagnetic interference to nearby circuitry.
Patented low noise mode switching circuitry is combined with ultrasteady output currents, enabling designs to be implemented using only four tiny external capacitors.
"As handheld electronics continue to march toward richer feature sets, controlling cost and power is a bigger challenge", said Eddie Yeow, Director of Portable Power Management at Semtech.
"Designers can no longer afford outmoded solutions like switch-mode regulators, which increase system cost, board space, signal noise, and complexity.
The SC603 tackles these design hurdles head on, delivering a dense, low-cost, power-efficient solution that is also easy to use".
The SC603 is now available through Semtech representatives and distributors, with prices starting at $1.39 each for 1000-piece lots.
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