TC7660H Datasheet, PDF (1/6 Pages) TelCom Semiconductor, Inc – HIGH FREQUENCY 7660 DC-TO-DC VOLTAGE CONVERTER

EVALUATION
KIT
AVAILABLE
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TC7660H
HIGH FREQUENCY 7660 DC-TO-DC VOLTAGE CONVERTER
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FEATURES
GENERAL DESCRIPTION
s Pin Compatible with 7660, High Frequency
Performance DC-to-DC Converter
s Low Cost, Two Low Value External Capacitors
Required ........................................................ (1.0µF)
s Converts +5V Logic Supply to ±5V System
s Wide Input Voltage Range .................... 1.5V to 10V
s Voltage Conversion ........................................ 99.7%
s Power Efficiency ................................................ 85%
s Available in 8-Pin SOIC and 8-Pin PDIP Packages
FUNCTIONAL BLOCK DIAGRAM
V ⁺ CAP ⁺
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
3 ^{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
4 ^{(SOIC) packages in commercial and extended temperature}
ranges.
8
2
OSC
7
RC
OSCILLATOR
÷2
6
LV
INTERNAL
VOLTAGE
REGULATOR
VOLTAGE–
LEVEL
TRANSLATOR
TC7660H
3
GND
4 _{CAP –}
5 _VOUT
LOGIC
NETWORK
ORDERING INFORMATION
Part No.
Package
Temperature
Range
TC7660HCOA
TC7660HCPA
TC7660HEOA
TC7660HEPA
TC7660EV
8-Pin SOIC
8-Pin Plastic DIP
0°C to +70°C
0°C to +70°C
5
8-Pin SOIC
– 40°C to +85°C
8-Pin Plastic DIP – 40°C to +85°C
Evaluation Kit for
Charge Pump Family
PIN CONFIGURATION (DIP and SOIC)
NC ₁
CAP ⁺ ₂
GND ₃
CAP ^– ₄
TC7660HCPA
TC7660HEPA
8 V+
7 ^OSC
6 ^LOW
VOLTAGE (LV)
5 ^VOUT
NC 1
CAP ^{+ 2}
GND 3
CAP ^{– 4}
8 V+
7 ^OSC
TC7660HCOA ₆
TC7660HEOA
5
LOW
VOLTAGE (LV)
VOUT
NC = NO INTERNAL CONNECTION
TELCOM SEMICONDUCTOR, INC.
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7
TC7660H-2 10/1/96
4-63
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