TC7660 Datasheet, PDF (1/12 Pages) TelCom Semiconductor, Inc – CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER

EVALUATION
KIT
AVAILABLE
TC7660
CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER
FEATURES
s Converts +5V Logic Supply to ±5V System
s Wide Input Voltage Range .................... 1.5V to 10V
s Efficient Voltage Conversion ......................... 99.9%
s Excellent Power Efficiency ............................... 98%
s Low Power Supply ............................... 80µA @ 5V_IN
s Low Cost and Easy to Use
— Only Two External Capacitors Required
s RS232 Negative Power Supply
s Available in Small Outline (SO) Package
s Improved ESD Protection ....................... Up to 3kV
s 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.
PIN CONFIGURATION (DIP and SOIC)
ORDERING INFORMATION
NC 1
8 V+
CAP ⁺ 2
7 OSC
GND
CAP ^–
3
4
TC7660CPA
TC7660EPA
TC7660IJA
6
5
LOW
VOLTAGE (LV)
VOUT
NC 1
CAP ⁺ 2
GND ₃
CAP ^– 4
8
7
TC7660COA 6
TC7660CPA
5
V+
OSC
LOW
VOLTAGE (LV)
VOUT
NC = NO INTERNAL CONNECTION
Part No.
TC7660COA
TC7660CPA
TC7660EOA
TC7660EPA
TC7660IJA
TC7660MJA
TC7660EV
Package
Temperature
Range
8-Pin SOIC
0°C to +70°C
8-Pin Plastic DIP
0°C to +70°C
8-Pin SOIC
– 40°C to +85°C
8-Pin Plastic DIP – 40°C to +85°C
8-Pin CerDIP
– 40°C to +85°C
8-Pin CerDIP
– 55°C to +125°C
Evaluation Kit for
Charge Pump Family
FUNCTIONAL BLOCK DIAGRAM
V ⁺ CAP ⁺
8
2
7
OSC
RC
OSCILLATOR
÷2
6
LV
INTERNAL
VOLTAGE
REGULATOR
TC7660
© 2001 Microchip Technology Inc. DS21465A
VOLTAGE–
LEVEL
TRANSLATOR
3
GND
4
CAP ^–
5
VOUT
LOGIC
NETWORK
TC7660-7 9/30/96