EVALUATION
KIT
AVAILABLE
1
TC7660
CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER
FEATURES
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Converts +5V Logic Supply to
±
5V System
Wide Input Voltage Range .................... 1.5V to 10V
Efficient Voltage Conversion ......................... 99.9%
Excellent Power Efficiency ............................... 98%
Low Power Supply ...............................80
µ
A @ 5V
IN
Low Cost and Easy to Use
— Only Two External Capacitors Required
RS232 Negative Power Supply
Available in Small Outline (SO) Package
Improved ESD Protection ....................... Up to 3kV
No Dx Diode Required for High Voltage Operation
GENERAL DESCRIPTION
The TC7660 is a pin-compatible replacement for the
Industry standard TC7660 charge pump voltage converter.
It converts a +1.5V to +10V input to a corresponding – 1.5V
to – 10V output using only two low-cost capacitors, eliminat-
ing inductors and their associated cost, size and EMI.
The on-board oscillator operates at a nominal fre-
quency of 10kHz. Operation below 10kHz (for lower supply
current applications) is possible by connecting an external
capacitor from OSC to ground (with pin 1 open).
The TC7660 is available in both 8-pin DIP and 8-pin
SOIC packages in commercial and extended temperature
ranges.
2
3
4
Temperature
Range
0°C to +70°C
0°C to +70°C
– 40°C to +85°C
– 40°C to +85°C
– 40°C to +85°C
– 55°C to +125°C
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
NC
1
8 V+
7 OSC
NC
1
8 V+
7 OSC
TC7660COA
TC7660CPA
TC7660EOA
TC7660EPA
TC7660IJA
TC7660MJA
CAP + 2
GND
CAP + 2
GND
CAP –
3
4
TC7660EPA
CAP – 4
TC7660IJA
5 VOUT
3
TC7660CPA
6 LOW
VOLTAGE (LV)
TC7660COA
6 LOW
VOLTAGE (LV)
TC7660CPA
5 VOUT
5
6
NC = NO INTERNAL CONNECTION
TC7660EV
Evaluation Kit for
Charge Pump Family
FUNCTIONAL BLOCK DIAGRAM
V + CAP +
8
2
OSC
7
RC
OSCILLATOR
÷
2
VOLTAGE–
LEVEL
TRANSLATOR
4
CAP –
LV
6
5
INTERNAL
VOLTAGE
REGULATOR
LOGIC
NETWORK
VOUT
7
TC7660
3
GND
8
TC7660-7 9/30/96
TELCOM SEMICONDUCTOR, INC.
4-51
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
