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ICL7667MJA Datasheet(PDF) 8 Page - Intersil Corporation

Part # ICL7667MJA
Description  Dual Power MOSFET Driver
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ICL7667MJA Datasheet(HTML) 8 Page - Intersil Corporation

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All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with-
out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
Sales Office Headquarters
NORTH AMERICA
Intersil Corporation
P. O. Box 883, Mail Stop 53-204
Melbourne, FL 32902
TEL: (407) 724-7000
FAX: (407) 724-7240
EUROPE
Intersil SA
Mercure Center
100, Rue de la Fusee
1130 Brussels, Belgium
TEL: (32) 2.724.2111
FAX: (32) 2.724.22.05
ASIA
Intersil (Taiwan) Ltd.
7F-6, No. 101 Fu Hsing North Road
Taipei, Taiwan
Republic of China
TEL: (886) 2 2716 9310
FAX: (886) 2 2715 3029
Other Applications
Relay and Lamp Drivers
The ICL7667 is suitable for converting low power TTL or
CMOS signals into high current, high voltage outputs for
relays, lamps and other loads. Unlike many other level
translator/driver ICs, the ICL7667 will both source and sink
current. The continuous output current is limited to 200mA
by the I2R power dissipation in the output FETs.
Charge Pump or Voltage Inverters and Doublers
The low output impedance and wide VCC range of the
ICL7667 make it well suited for charge pump circuits. Figure
13A shows a typical charge pump voltage inverter circuit and
a typical performance curve. A common use of this circuit is
to provide a low current negative supply for analog circuitry
or RS232 drivers. With an input voltage of +15V, this circuit
will deliver 20mA at -12.6V. By increasing the size of the
capacitors, the current capability can be increased and the
voltage loss decreased. The practical range of the input
frequency is 500Hz to 250kHz. As the frequency goes up,
the charge pump capacitors can be made smaller, but the
internal losses in the ICL7667 will rise, reducing the circuit
efficiency.
Figure 14, a voltage doubler, is very similar in both circuitry
and performance. A potential use of Figure 13 would be to
supply the higher voltage needed for EEPROM or EPROM
programming.
Clock Driver
Some microprocessors (such as the CDP68HC05 families)
use a clock signal to control the various LSI peripherals of
the family. The ICL7667s combination of low propagation
delay, high current drive capability and wide voltage swing
make it attractive for this application. Although the ICL7667
is primarily intended for driving power MOSFET gates at
15V, the ICL7667 also works well as a 5V high-speed buffer.
Unlike standard 4000 series CMOS, the ICL7667 uses short
channel length FETs and the ICL7667 is only slightly slower
at 5V than at 15V.
1/2
ICL7667
+15V
10
µF
+
-
IN4001
47
µF
+
-
28.5V
IN4001
1kHz - 250kHz
+15
SQUARE
WAVE
IN TTL
LEVELS
FIGURE 14. VOLTAGE DOUBLER
ICL7667


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