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TC1240AECH データシート(PDF) 1 Page - Microchip Technology

部品番号 TC1240AECH
部品情報  Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC1240AECH データシート(HTML) 1 Page - Microchip Technology

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 2001-2012 Microchip Technology Inc.
DS21516D-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 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
C-
6
6-Pin SOT-23A
TC1240ECH
TC1240AECH
13
4
2
VIN
C+
GND
5
SHDN
VOUT
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


同様の部品番号 - TC1240AECH

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