SLB628D 底啟動電壓2.2V-16V支持升壓9V、12、18V升壓恒壓應(yīng)用電源芯片

小鄭

GENERAL DESCRIPTION
  The SLB628D is a constant frequency, 6-pin
SOT23 current mode step-up converter intended for
small, low power applications. The SLB628D
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 SLB628D features automatic shifting to pulse
frequency modulation mode at light loads. The
SLB628D includes under-voltage lockout, current
limiting, and thermal overload protection to prevent
damage in the event of an output overload. The
SLB628D is available in a small 6-pin SOT-23
package.



FEATURES
⚫ Integrated 80mΩ Power MOSFET
⚫ 2.2V to 16V Input Voltage
⚫ 1.2MHz Fixed Switching Frequency
⚫ Adjustable Over Current Protection: 0.5A
~2.5A
⚫ Internal 2.5A Switch Current Limit(OC pin
floating)
⚫ Adjustable Output Voltage
⚫ Internal Compensation
⚫ Over Voltage Protection
⚫ Up to 20V Output Voltage
⚫ Automatic Pulse Frequency Modulation Mode
at Light Loads
⚫ up to 93% Efficiency
⚫ Available in a 6-Pin SOT23-6 Package




APPLICATIONS
⚫ Battery-Powered Equipment
⚫ Set-Top Boxed
⚫ LCD Bais Supply
⚫ DSL and Cable Modems and Routers
⚫ Networking cards powered from PCI or PCI
express slots