Semtech Corporation’s 30V Micropower Buck Regulator Platform Improves Battery Life and Reduces Standby Power in Consumer Applications
Semtech launched the first device in its platform of high-efficiency micropower step-down switching regulators. The SC4530 is a 30V micropower buck regulator that provides light-load efficiency greater than 80% at 650µA output and an ultra-small, 50mm2 solution footprint. This combination of features addresses the key requirements for long battery life, small size and design simplicity in notebook PCs and set-top box applications.
"Semtech's new SC4530 provides longer standby times in both battery-powered and line-powered consumer electronics by providing designers a high efficiency power solution for light-load conditions," said Andy Khayat, Senior Business Unit Director for Consumer Power in Semtech's Power Management Group. "This micropower buck regulator increases light-load efficiency up to 10 percent giving Semtech's customers another means to achieve their power efficiency goals."
The SC4530 operates from a 3V to 30V supply and provides an adjustable output voltage with output current up to 300mA. The very-wide input voltage range enables the device to operate from a variety of input sources, including single- or multi-cell batteries, internal system rails and wall adapters.
A web-based design evaluation and simulation model is available for the SC4530. It can be accessed through Semtech's C-SIM design simulation tool at: http://semtech.transim.com/CSIM/pages/ProdSel.aspx?part_number=SC4530
Key Features of SC4530
* Wide VIN range: 3V to 30V
* IOUT: up to 300mA
* Greater than 80% standby efficiency (at 650µA, 12V input, 5V output)
* Greater than 85% operating efficiency (at 10mA - 300mA, 12V input, 5V output)
* Small BOM: integrated power switch, Schottky diodes, compensation
* Solution footprint as small as 50mm2
* Packaging: MLPD, 8-pin, 3 x 2 x 0.8mm
Applications
* Notebook PCs, Ultrabooks, Tablet PCs: Peripheral Power
* HDTV: Switching Regulator
* Set Top Box: Switching Regulator
* Laser Printer: Switching Regulator
* Route and Switch: Switching Regulator
* White Goods: Switching Regulator
* Industrial Modules: Power Supplies
* Industrial Gaming: Gaming Power Supplies
* Industrial PC: System Power
The SC4530 is available immediately in production quantities and is priced at $0.58 each in 3,000-piece lots. The ordering code is SC4530WLTRT. Evaluation boards (SC4530EVB) are also available. Semtech offers comprehensive design assistance, including field- and factory-based support. Data sheets, volume pricing, and delivery quotes, as well as evaluation kits and samples, are available at http://www.semtech.com/info
