充氣機(jī)又叫打氣機(jī)、打氣泵、充氣泵。通過馬達(dá)的運(yùn)轉(zhuǎn)來工作。充氣機(jī)是馬達(dá)運(yùn)轉(zhuǎn)，抽氣時，連通器的閥門被大氣的氣壓沖開，氣體進(jìn)入氣筒，而向輪胎中打氣時，閥門又被氣筒內(nèi)的氣壓關(guān)閉，氣體就進(jìn)入了輪胎中。 也算是使用了大氣壓的原理來同汽車、皮球、橡皮船充氣。

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

TYPICAL APPLICATION