TC1044SCOA Microchip Technology, TC1044SCOA Datasheet

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TC1044SCOA

Manufacturer Part Number
TC1044SCOA
Description
IC CHARGE PUMP DC/DC CONV 8-SOIC
Manufacturer
Microchip Technology
Type
Switched Capacitor (Charge Pump), Invertingr
Datasheet

Specifications of TC1044SCOA

Package / Case
8-SOIC (3.9mm Width)
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
-1.5 ~ -12 V
Current - Output
20mA
Frequency - Switching
10kHz, 45kHz
Voltage - Input
1.5 ~ 12 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Power - Output
470mW
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Function
Inverting
Output Voltage
- 12 V to - 1.5 V
Maximum Operating Temperature
+ 70 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TC1044SCOA
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
TC1044SCOA713
Manufacturer:
MICROCHIP
Quantity:
9 630
© 2001 Microchip Technology Inc.
Charge Pump DC-TO-DC Voltage Converter
FEATURES
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATION (DIP AND SOIC)
BOOST
CAP +
CAP –
GND
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 A @ V
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
1
2
3
4
TC1044SCPA
TC1044SMJA
TC1044SEPA
TC1044SIJA
BOOST
OSC
8
7
6
5
LV
V
OSC
LOW
VOLTAGE (LV)
V OUT
+
DS21348A
1
7
6
TC1044S
OSCILLATOR
BOOST
CAP +
CAP –
GND
OSC
RC
1
2
3
4
REGULATOR
to 45kHz
TC1044SEOA
INTERNAL
TC1044SCOA
VOLTAGE
8
7
6
5
2
V
OSC
LOW
VOLTAGE (LV)
V OUT
+
IN
= 5V
TRANSLATOR
VOLTAGE–
LEVEL
GENERAL DESCRIPTION
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.
of 10kHz. Frequency is increased to 45kHz when pin 1 is
connected to V
current applications) is possible by connecting an external
capacitor from OSC to ground (with pin 1 open).
8-pin small outline (SOIC) packages in commercial and
extended temperature ranges.
ORDERING INFORMATION
Part No.
TC1044SCOA
TC1044SCPA
TC1044SEOA
TC1044SEPA
TC1044SIJA
TC1044SMJA
TC7660EV
V +
GND
3
The TC1044S is a pin-compatible upgrade to the Indus-
The on-board oscillator operates at a nominal frequency
The TC1044S is available in both 8-pin DIP and
8
EVALUATION
AVAILABLE
2
KIT
CAP +
+
. Operation below 10kHz (for lower supply
Package
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin CerDIP
8-Pin CerDIP
Charge Pump Family Evaluation Kit
NETWORK
LOGIC
4
5
V OUT
CAP –
– 55 C to +125 C
TC1044S
– 40 C to +85 C
– 40 C to +85 C
– 25 C to +85 C
Temp. Range
TC1044S-12 9/16/96
0 C to +70 C
0 C to +70 C

Related parts for TC1044SCOA

TC1044SCOA Summary of contents

Page 1

... OSC to ground (with pin 1 open). to 45kHz The TC1044S is available in both 8-pin DIP and 8-pin small outline (SOIC) packages in commercial and extended temperature ranges. ORDERING INFORMATION Part No. TC1044SCOA + TC1044SCPA 2 7 OSC TC1044SCOA TC1044SEOA TC1044SEOA LOW 3 6 VOLTAGE (LV) TC1044SEPA OUT TC1044SIJA TC1044SMJA TC7660EV VOLTAGE– ...

Page 2

... C — 105 — — — — — 10 — — 99.9 — 1 — 100 © 2001 Microchip Technology Inc. Max Unit 160 A 180 180 200 300 A 350 400 12 V 3.5 V 100 120 120 150 250 400 — kHz — — ...

Page 3

... TC1044S + NOTE: For large values of C (>1000pF), the values OSC of C and C should be increased to 100 Figure 1. TC1044S Test Circuit © 2001 Microchip Technology Inc. DS21348A for the half GND and S are closed, with 4 negatively such that 1 2 and S are N-channel 3 4 ...

Page 4

... C resistance would be approximately OUT Figure 4. Paralleling Devices Lowers Output Impedance 4 ). Since this capacitor is connected to the 3. serves all devices, while each device 2 . The resultant output 1 R (of TC1044S) OUT R = OUT n (number of devices TC1044S 6 "n" © 2001 Microchip Technology Inc. DS21348A ...

Page 5

... Figure 6. In order to prevent possible device latch-up resistor must be used in series with the clock output TC1044S + Figure 6. External Clocking © 2001 Microchip Technology Inc. DS21348A 12V + situation where the designer has generated the external clock frequency using TTL logic, the addition of a 10k pull- ...

Page 6

... The TC1044S provides an inexpensive –5V source. (See AN16 and AN17 for TC7135 interface details and V OUT = software routines – and D in Figure 9 would never turn TC1044S digit ADC operating from 5V © 2001 Microchip Technology Inc. V OUT = – OUT = ( – Digit DS21348A ...

Page 7

... Figure 10. Positive Voltage Conversion TYPICAL CHARACTERISTICS Unloaded Osc Freq vs. Temperature -40 - TEMPERATURE ( C) Supply Current vs. Temperature (with Boost Pin = V 1000 800 600 400 200 0 -40 - TEMPERATURE ( C) © 2001 Microchip Technology Inc. DS21348A OUT = –V – – INPUT Unloaded Osc Freq vs. Temperature 12V 100 - 101 ...

Page 8

... Charge Pump DC-TO-DC Voltage Converter Output Source Resistance vs. Temperature 100 20mA OUT 8.5 9.5 10.5 11.5 12 100 100 Supply Current vs. Temperature -40 - TEMPERATURE ( 2. -40 - TEMPERATURE ( C) Power Conversion Efficiency vs. Load Boost Pin = Open Boost Pin = LOAD CURRENT (mA) = 12. 100 © 2001 Microchip Technology Inc 5. 100 DS21348A ...

Page 9

... MAX. .400 (10.16) .370 (9.40) .200 (5.08) .160 (4.06) .200 (5.08) .125 (3.18) .065 (1.65) .045 (1.14) © 2001 Microchip Technology Inc. DS21348A 8-Pin Plastic DIP PIN 1 .260 (6.60) .240 (6.10) .070 (1.78) .040 (1.02) .348 (8.84) .040 (1.02) ...

Page 10

... TC1044S-12 9/16/96 Charge Pump DC-TO-DC Voltage Converter 8-Pin SOIC .157 (3.99) .244 (6.20) .150 (3.81) .228 (5.79) .069 (1.75) .053 (1.35) 8 MAX. .010 (0.25) .050 (1.27) .004 (0.10) .016 (0.40) 10 .010 (0.25) .007 (0.18) Dimensions: inches (mm) © 2001 Microchip Technology Inc. DS21348A ...

Page 11

... Microchip. No licenses are conveyed, implicitly or otherwise, except as maybe explicitly expressed herein, under any intellec- tual property rights. The Microchip logo and name are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries. All rights reserved. All other trademarks mentioned herein are the property of their respective companies. ...

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