TC1240A

更新时间： 2024-11-22 22:42:27

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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TC1240A 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

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与TC1240A相关器件

型号	品牌	获取价格	描述	数据表
TC1240AECH	MICROCHIP	获取价格	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package
TC1240AECHRT	MICROCHIP	获取价格	暂无描述
TC1240AECHTR	MICROCHIP	获取价格	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package
TC1240AI/CHTR	MICROCHIP	获取价格	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package
TC1240AICHTR	MICROCHIP	获取价格	IC,DC/DC CONVERTER,+11.6V,CMOS,TSOP,6PIN
TC1240ECH	TELCOM	获取价格	Positive Doubling Charge Pump with Shutdown in SOT Package
TC1240ECH	MICROCHIP	获取价格	Positive Doubling Charge Pump with Shutdown in SOT Package
TC1240ECHTR	MICROCHIP	获取价格	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package
TC1240I/CHTR	MICROCHIP	获取价格	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package
TC1240ICHTR	MICROCHIP	获取价格	IC,DC/DC CONVERTER,+9V,CMOS,TSOP,6PIN