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參數資料
| 型號： | TC1240A |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package |
| 中文描述： | 積極加倍電荷泵與關機采用SOT - 23封裝 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 290K |
| 代理商： | TC1240A |
2003 Microchip Technology Inc.
DS21516C-page 1
M
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 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
PDAs, Portable Data Loggers
Battery Powered Devices
Handheld Instruments
Package Type
General Description
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.
Typical Application Circuit
NOTE:
6-Pin SOT-23A is equivalent to the
EIAJ (SC-74A)
C-
6
6-Pin SOT-23A
TC1240ECH
TC1240AECH
1
3
4
2
V
IN
C+
GND
5
SHDN
V
OUT
Positive Voltage Doubler
V
IN
2 x INPUT
C+
C-
C
1
INPUT
GND
V
OUT
SHDN
OFF
ON
TC1240
TC1240A
+
+
C
2
Positive Doubling Charge Pumps with Shutdown
in a SOT-23 Package
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TC1240AECH | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package |
| TC1240AECHTR | 功能描述:電荷泵 Positive Doubling RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| TC1240AI/CHTR | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package |
| TC1240ECH | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package |
| TC1240ECHTR | 功能描述:電荷泵 Positive Doubling RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
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