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TC1044SCPA

Description
charge pump DC-TO-DC voltage converter
CategoryPower/power management    The power supply circuit   
File Size91KB,11 Pages
ManufacturerTelCom Semiconductor, Inc. (Microchip Technology)
Websitehttp://www.telcom-semi.com/
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TC1044SCPA Overview

charge pump DC-TO-DC voltage converter

TC1044SCPA Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerTelCom Semiconductor, Inc. (Microchip Technology)
package instructionDIP, DIP8,.3
Reach Compliance Codeunknown
Analog Integrated Circuits - Other TypesSWITCHED CAPACITOR REGULATOR
Maximum input voltage12 V
Minimum input voltage1.5 V
Nominal input voltage5 V
JESD-30 codeR-PDIP-T8
JESD-609 codee0
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current0.02 A
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Certification statusNot Qualified
surface mountNO
Switch configurationDOUBLER INVERTER
Maximum switching frequency45 kHz
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
EVALUATION
KIT
AVAILABLE
TC1044S
Charge Pump DC-TO-DC Voltage Converter
FEATURES
s
s
s
s
s
s
s
s
s
s
s
Converts +5V Logic Supply to
±
5V System
Wide Input Voltage Range .................... 1.5V to 12V
Efficient Voltage Conversion ......................... 99.9%
Excellent Power Efficiency ............................... 98%
Low Power Consumption ............ 80
µ
A @ V
IN
= 5V
Low Cost and Easy to Use
— Only Two External Capacitors Required
RS-232 Negative Power Supply
Available in 8-Pin Small Outline (SOIC) and 8-Pin
Plastic DIP Packages
Improved ESD Protection ..................... Up to 10kV
No External Diode Required for High Voltage
Operation
Frequency Boost Raises F
OSC
to 45kHz
GENERAL DESCRIPTION
The TC1044S is a pin-compatible upgrade to the Indus-
try standard TC7660 charge pump voltage converter. It
converts a +1.5V to +12V input to a corresponding –1.5V
to –12V output using only two low cost capacitors, eliminat-
ing inductors and their associated cost, size and EMI.
Added features include an extended supply range to 12V,
and a frequency boost pin for higher operating frequency,
allowing the use of smaller external capacitors.
The on-board oscillator operates at a nominal frequency
of 10kHz. Frequency is increased to 45kHz when pin 1 is
connected to V
+
. Operation below 10kHz (for lower supply
current applications) is possible by connecting an external
capacitor from OSC to ground (with pin 1 open).
The TC1044S is available in both 8-pin DIP and
8-pin small outline (SOIC) packages in commercial and
extended temperature ranges.
PIN CONFIGURATION
(DIP AND SOIC)
ORDERING INFORMATION
Part No.
Package
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin CerDIP
8-Pin CerDIP
Temp. Range
0°C to +70°C
0°C to +70°C
– 40°C to +85°C
– 40°C to +85°C
– 25°C to +85°C
– 55°C to +125°C
BOOST 1
8 V+
BOOST 1
8 V+
TC1044SCOA
TC1044SCPA
TC1044SEOA
TC1044SEPA
TC1044SIJA
TC1044SMJA
TC7660EV
CAP + 2 TC1044SCPA 7 OSC
TC1044SEPA
GND 3 TC1044SIJA 6 LOW
VOLTAGE (LV)
TC1044SMJA
– 4
5 VOUT
CAP
CAP + 2 TC1044SCOA 7 OSC
TC1044SEOA
GND 3
6 LOW
VOLTAGE (LV)
– 4
5 VOUT
CAP
Charge Pump Family Evaluation Kit
CAP +
2
FUNCTIONAL BLOCK DIAGRAM
V+
8
BOOST
1
OSC
7
RC
OSCILLATOR
2
VOLTAGE–
LEVEL
TRANSLATOR
4
CAP –
LV
6
5
INTERNAL
VOLTAGE
REGULATOR
LOGIC
NETWORK
3
GND
VOUT
TC1044S
© 2001 Microchip Technology Inc.
DS21348A
TC1044S-12 9/16/96

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