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TC1240AI/CHTR

更新时间： 2024-11-25 22:41:07

品牌	Logo	应用领域
美国微芯 - MICROCHIP		泵
页数	文件大小	规格书
16页	283K
描述
Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package

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数据手册

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TC1240AI/CHTR 数据手册

TC1240/TC1240A

Positive Doubling Charge Pumps with Shutdown

in a SOT-23 Package

Features

General Description

• Charge Pumps in 6-Pin SOT-23A Package

• >99% Typical Voltage Conversion Efficiency

• Voltage Doubling

The TC1240/TC1240A is a doubling CMOS charge

pump voltage converter in a small 6-Pin SOT-23A

package. The TC1240 doubles an input voltage that

can range from +2.5V to +4.0V, while the TC1240A

doubles an input voltage that can range from +2.5V to

+5.5V. Conversion efficiency is typically >99%. Internal

oscillator frequency is 160 kHz for both devices. The

TC1240 and TC1240A have an active-high shutdown

that limits the current consumption of the devices to

less than 1 µA.

External component requirement is only two capacitors

for standard voltage doubler applications. All other

circuitry (including control, oscillator and power

MOSFETs) are integrated on-chip. Typical supply cur-

rent is 180 µA for the TC1240 and 550 µA for the

TC1240A. Both devices are available in a 6-Pin SOT-

23A surface mount package.

• Input Voltage Range, TC1240: +2.5V to +4.0V,

TC1240A: +2.5V to +5.5V

• Low Output Resistance, TC1240: 17Ω (Typical)

TC1240A: 12Ω (Typical)

• Only Two External Capacitors Required

• Low Supply Current, TC1240: 180 µA (Typical)

TC1240A: 550 µA (Typical)

• Power-Saving Shutdown Mode (1 µA Maximum)

• Shutdown Input Fully Compatible with 1.8V Logic

Systems

Applications

• Cellular Phones

• Pagers

Typical Application Circuit

Positive Voltage Doubler

• PDAs, Portable Data Loggers

• Battery Powered Devices

• Handheld Instruments

INPUT

C+

TC1240

Package Type

6-Pin SOT-23A

TC1240A

C-

OFF

SHDN

C+

SHDN

OUT

2 x INPUT

GND

TC1240ECH

TC1240AECH

GND

C-

NOTE: 6-Pin SOT-23A is equivalent to the

EIAJ (SC-74A)

 2003 Microchip Technology Inc.

DS21516C-page 1

12 3 4 5 6 7...16

中文翻译

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