KF9904 电容升压IC

KF9904 电容升压IC

发布商家
深圳市亿创微芯电子有限公司
联系人
李小姐(女士)
职位
销售经理
电话
0755-83538626
手机
15815503065
微信
15815503065
价格
¥0.30/个
品牌
KF/科发鑫
启动电压
2.5V
输出电压
5V
输出电流
250mA
起订
3000个
供应
10000000000个
发货
2天内

The KF9904 is a low noise, constant frequency (400kHz) switched capacitor voltage doubler. It produce a regulated output voltage from a 2.5V to 4.5V input with up to 250mA of output current. Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the KF9904 ideally suited for small, battery-powered applications.

A new charge-pump architecture maintains constant switching frequency to zero load and reduces both output and input ripple. The KF9904 have thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. Builtin soft-start circuitry prevents excessive inrush current during start-up.

High switching frequency enables the use of small ceramic capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to <1uA.

The KF9904 is available in the industry standard SOT-23-6 power packages.

   Features

Fixed 5V土4% Output

VIN Range: 2.5V to 5V

Output Current: Up to 250mA

Constant Frequency Operation at All Loads

Low Noise Constant Frequency (400kHz) Operation

Automatic Soft-Start Reduces Inrush Current

Shutdown Current <1μA

Short-Circuit Protection

No Inductors

Available in Low Profile 6-Lead SOT23 Package

    Application

White LED Backlighting

Li-lon Battery Backup Supplies

Local 3V to 5V Conversion

Smart Card Readers

PCMCIA Local 5V Supplies

 


人气
191
发布时间
2023-09-06 14:51
所属行业
其他IC
编号
20188208
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