MC7660 Datasheet, PDF (1/12 Pages) ON Semiconductor – Charge Pump DC-to-DC Voltage Converter

MC7660
Charge Pump DC-to-DC
Voltage Converter
The MC7660 is a pin–compatible replacement for the Industry
standard ICL7660 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, eliminating inductors and their associated cost,
size and EMI.
The on–board oscillator operates at a nominal frequency 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 MC7660 is available in an 8–pin SOIC package in extended
temperature range.
Features
• Converts +5V Supply to –5V Supply
• Wide Input Voltage Range: 1.5V to 10V
• Efficient Voltage Conversion: 99.9%
• Excellent Power Efficiency: 98%
• Low Power Supply: 80µA @ 5VIN
• Low Cost and Easy to Use
– Only Two External Capacitors Required
• Available in Small Outline (SO) Package
• ESD Protection: ≥ 2.5kV
• No Dx Diode Required for High Voltage Operation
Typical Applications
• RS–232 Negative Bias
• Display Bias
• Data Aquisition Negative Supply Generation
http://onsemi.com
SO–8
D SUFFIX
CASE 751
PIN CONFIGURATION
(Top View)
NC 1
CAP+ 2
GND 3
CAP– 4
8 V+
7 _OSC
6 _LV
5 VOUT
ORDERING INFORMATION
Device
Package
Shipping
MC7660DR2 8–Pin SOIC 2500 Tape/Reel
FUNCTIONAL BLOCK DIAGRAM
V+ CAP+
8
2
OSC
LV
7
RC
OSCILLATOR
B2
6
INTERNAL
VOLTAGE
REGULATOR
MC7660
VOLTAGE–
LEVEL
TRANSLATOR
3
GND
4
CAP–
5
VOUT
LOGIC
NETWORK
© Semiconductor Components Industries, LLC, 1999
1
February, 2000 – Rev. 2
Publication Order Number:
MC7660/D