Datasheet > ZXCP330

ZXCP330

更新时间： 2024-01-27 00:52:01

品牌	Logo	应用领域
捷特科 - ZETEX		转换器开关 DC-DC转换器
页数	文件大小	规格书
9页	344K
描述
SWITCHED CAPACITOR DC-DC CONVERTER

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ZXCP330 数据手册

ZXCP330

SWITCHED CAPACITOR DC-DC CONVERTER

DEVICE DESCRIPTION

The ZXCP330 is the first in a series of switched capacitor DC to DC converters,

converting an input voltage from between 2 volts and 4.4 volts to a regulated

output voltage of 3.3V with a maximum load current of 40mA. The device

operates with one flying capacitor and two small bypass capacitors at input

and output making for a very small solution. Very low quiescent current

makesthesedevicesidealforlowpowerandbatterypoweredapplications.

Regulation is achieved by sensing the output and enabling the device charge pump when it falls below the sense

threshold. This technique leads to high efficiency conversion. The method is also efficient for low current loads.

Herethedutycyclewillbelowandthequiescentcurrentdrawnwhilstthechargepumpisdisabledisverysmall.

The device includes a pin for logic controlled shutdown of the output, and also features thermal shutdown, which

protects against short circuit damage as well as excessive temperatures. The device is supplied in a 6 lead SOT-23

package.

Contact Zetex marketing for availability of other voltage options.

FEATURES

APPLICATIONS

· Very low power: I_Q= 20µA

· Battery backup supplies

· Regulated output voltage: 3.3V, 4ꢀ

· Output current: 20mA at V_IN= 2V

· Output current: 40mA at V_IN= 2.5V

· No inductors required

· Smart card readers

· Li-Ion battery backup supplies

· SIM interface supplies for cellular phones

· Hand held computers

· Very low shutdown current: <1µA

· Short circuit and over-temp protected

· Very small package: SOT23-6 pin

APPLICATIONS DIAGRAM

PROVISIONAL ISSUE A - DECEMBER 2001

12 3 4 5 6 7...9

中文翻译

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