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TC1240ECH Folha de dados(PDF) 1 Page - Microchip Technology

Nome de Peças TC1240ECH
Descrição Electrónicos  Positive Doubling Charge Pump with Shutdown in SOT Package
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Fabricante Electrônico  MICROCHIP [Microchip Technology]
Página de início  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

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TC1240
Positive Doubling Charge Pump with
Shutdown in SOT Package
TC1240-1 7/7/00 DS21333A
© 2001 Microchip Technology Inc.
Positive Doubling Charge Pump with Shutdown
in SOT Package
GENERAL DESCRIPTION
The TC1240 is a doubling CMOS charge-pump voltage
converter in a small 6-Pin SOT-23A package. TC1240
doubles an input voltage which can range from +2.5V to
+4.0V. Conversion efficiency is typically >99%. Internal
oscillator frequency is 160kHz for the TC1240. The TC1240
has an active high shutdown which limits the current con-
sumption of the device to less than 1
µA.
External component requirement is only two capacitors
for standard voltage doubler applications. All other circuitry,
including control, oscillator, power MOSFETs are integrated
on-chip. Typical supply current is 180
µA and the device is
available in a 6-Pin SOT-23A surface mount package.
FEATURES
I
Space Saving 6-Pin SOT-23A Package
I >99% Typical Voltage Conversion Efficiency
I Voltage Doubling
I Operates from +2.5V to +4.0V
I Low Output Resistance (17
Typical)
I Only Two External Capacitors Required
I Consumes 180
µA (Typical) in Active Mode
I Power-Saving Shutdown Mode (1
µA Maximum)
I Fully Compliant with 1.8V Logic Sytems
APPLICATIONS
I Cellular Phones
I Pagers
I PDAs, Portable Data Loggers
I Battery-Powered Devices
I Handheld Instruments
ORDERING INFORMATION
Part
Number
Package
Temp. Range
TC1240ECH
6-Pin SOT-23A
–40
°C to +85°C
TC1240
TYPICAL OPERATING CIRCUIT
PIN CONFIGURATION
Positive Voltage Doubler
TC1240
VIN
2 x INPUT
C+
C
C1
C2
INPUT
GND
OUT
SHDN
OFF
ON
6-Pin SOT-23A
C+
C–
GND
TC1240ECH
1
2
3
6
VIN
OUT
4
5
SHDN
NOTE: *6-Pin SOT-23A is equivalent to EIAJ SC-74


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