Semtech's SC4530 30V Micropower Buck Regulator Improves Battery Life and Reduces Standby Power

“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.

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.