EVALUATION
KIT
AVAILABLE
1
TC7660H
HIGH FREQUENCY 7660 DC-TO-DC VOLTAGE CONVERTER
FEATURES
s
s
s
s
s
s
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Pin Compatible with 7660, High Frequency
Performance DC-to-DC Converter
Low Cost, Two Low Value External Capacitors
Required ........................................................ (1.0
µ
F)
Converts +5V Logic Supply to
±
5V System
Wide Input Voltage Range .................... 1.5V to 10V
Voltage Conversion ........................................ 99.7%
Power Efficiency ................................................ 85%
Available in 8-Pin SOIC and 8-Pin PDIP Packages
GENERAL DESCRIPTION
The TC7660H is a pin-compatible, high frequency up-
grade to the Industry standard TC7660 charge pump volt-
age converter. It converts a +1.5V to +10V input to a
corresponding – 1.5V to -10V output using only two low-cost
capacitors, eliminating inductors and their associated cost,
size and EMI.
The TC7660H operates at a frequency of 120kHz (ver-
sus 10kHz for the TC7660), allowing the use of 1.0µF
external capacitors. Oscillator frequency can be reduced
(for lower supply current applications) by connecting an
external capacitor from OSC to ground.
The TC7660H is available in 8-pin DIP and small outline
(SOIC) packages in commercial and extended temperature
ranges.
2
3
4
5
6
FUNCTIONAL BLOCK DIAGRAM
V + CAP +
8
2
ORDERING INFORMATION
OSC
7
RC
OSCILLATOR
÷
2
VOLTAGE–
LEVEL
TRANSLATOR
4
CAP –
LV
6
5
INTERNAL
VOLTAGE
REGULATOR
LOGIC
NETWORK
VOUT
Part No.
TC7660HCOA
TC7660HCPA
TC7660HEOA
TC7660HEPA
Package
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
Temperature
Range
0°C to +70°C
0°C to +70°C
– 40°C to +85°C
– 40°C to +85°C
TC7660H
3
GND
TC7660EV
Evaluation Kit for
Charge Pump Family
PIN CONFIGURATION
(DIP and SOIC)
NC
1
8
V+
CAP + 2
GND
3
TC7660HCPA
TC7660HEPA
7 OSC
6
LOW
VOLTAGE (LV)
5 VOUT
CAP – 4
NC
CAP +
GND
CAP –
1
2
3
4
TC7660HCOA
TC7660HEOA
8
7
6
5
V+
OSC
LOW
VOLTAGE (LV)
VOUT
7
NC = NO INTERNAL CONNECTION
TC7660H-2 10/1/96
8
4-63
TELCOM SEMICONDUCTOR, INC.
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
