描述
The SLB628 is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small, low power applications. The SLB628 switches at 1.2MHz and allows the use of tiny, low cost capacitors and inductors 2mm or less in height. Internal soft-start results in small inrush current and extends battery life.
The SLB628 features automatic shifting to pulse frequency modulation mode at light loads. The SLB628 includes under-voltage lockout, current limiting, and thermal overload protection to prevent damage in the event of an output overload. The SLB628 is available in a small 6-pin SOT-23 package.

特性
? Integrated 80mΩ Power MOSFET
? 2V to 24V Input Voltage
? 1.2MHz Fixed?switching?Frequency
? Internal 4A Switch Current Limit
? Adjustable Output Voltage
? Internal Compensation
? Up to 28V Output Voltage
? Automatic Pulse Frequency Modulation
Mode at Light Loads
? up to 96% Efficiency
? Available in a 6-Pin SOT23-6 Package

應用
? Battery-Powered Equipment
? Set-Top Boxed
? LCD Bais Supply
? DSL and Cable?modems and Routers
? Networking cards powered from PCI
or PCI express slots

原理圖