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参数资料
| 型号： | TC1240ECH |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 125 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | SOT-23A, 6 PIN |
| 文件页数： | 1/16页 |
| 文件大小： | 472K |
| 代理商： | TC1240ECH |
2002 Microchip Technology Inc.
DS21516B-page 1
TC1240/TC1240A
Features
Charge Pumps in 6-Pin SOT-23A Package
>99% Typical Voltage Conversion Efficiency
Voltage Doubling
Input Voltage Range, TC1240: +2.5V to +4.0V,
TC1240A: +2.5V to +5.5V
Low Output Resistance, TC1240: 17
(Typical)
TC1240A: 12
(Typical)
Only Two External Capacitors Required
Low Supply Current, TC1240: 180
A(Typical)
TC1240A: 550
A(Typical)
Power-Saving Shutdown Mode (1
A Maximum)
Shutdown Input Fully Compatible with 1.8V Logic
Systems
Applications
Cellular Phones
Pagers
PDAs, Portable Data Loggers
Battery Powered Devices
Handheld Instruments
Device Selection Table
Package Type
General Description
The TC1240 and TC1240A are doubling CMOS charge
pump voltage converters in a small 6-Pin SOT-23A
package. The TC1240 doubles an input voltage which
can range from +2.5V to +4.0V and the TC1240A
doubles an input voltage which can range from +2.5V
to +5.5V. Conversion efficiency is typically >99%.
Internal oscillator frequency is 160kHz for both devices.
The TC1240 and TC1240A have an active high
shutdown which limits the current consumption of the
devices to less than 1
A.
External component requirement is only two capacitors
for standard voltage doubler applications. All other
circuitry,
including
control,
oscillator
and
power
MOSFETs, is integrated on-chip. Typical supply current
is 180
A for the TC1240 and 550A for the TC1240A.
Both devices are available in a 6-Pin SOT-23A surface
mount package.
Typical Application Circuit
Part Number
Package
Temperature
Range
TC1240ECH
6-Pin SOT-23A
-40°C to +85°C
TC1240AECH
6-Pin SOT-23A
-40°C to +85°C
C-
6
6-Pin SOT-23A
TC1240ECH
TC1240AECH
13
4
2
VIN
C+
GND
5
SHDN
VOUT
NOTE: 6-Pin SOT-23A is equivalent to the EIAJ (SC-74A)
Positive Voltage Doubler
VIN
2 x INPUT
C+
C-
C1
INPUT
GND
VOUT
SHDN
OFF
ON
TC1240
TC1240A
+
C2
Positive Doubling Charge Pumps with Shutdown
in a SOT-23 Package
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1240ECHTR | 功能描述:电荷泵 Positive Doubling RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TC1240ECHTR-CUT TAPE | 制造商:Microchip 功能描述:TC1240 Series 2.5 to 5.5 V Positive Doubling Charge Pump w/ Shutdown - SOT-23-6 |
| TC1240I/CHTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package |
| TC1240ICHTR | 制造商:Microchip Technology Inc 功能描述: |
| TC124A | 制造商:Thomas & Betts 功能描述:Fittings Connector 1.25inch Steel |
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