ICL7662IBD Intersil Corporation, ICL7662IBD Datasheet

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ICL7662IBD

Manufacturer Part Number
ICL7662IBD
Description
CMOS Voltage Converter
Manufacturer
Intersil Corporation
Datasheets

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Part Number:
ICL7662IBD
Manufacturer:
TI
Quantity:
5 510
CMOS Voltage Converter
The Intersil ICL7662 is a monolithic high-voltage CMOS
power supply circuit which offers unique performance ad-
vantages over previously available devices. The ICL7662
performs supply voltage conversion from positive to negative
for an input range of +4.5V to +20.0V, resulting in
complementary output voltages of -4.5V to -20V. Only 2
noncritical external capacitors are needed for the charge
pump and charge reservoir functions. The ICL7662 can also
function as a voltage doubler, and will generate output
voltages up to +38.6V with a +20V input.
Contained on chip are a series DC power supply regulator,
RC oscillator, voltage level translator, four output power
MOS switches. A unique logic element senses the most
negative voltage in the device and ensures that the output N-
Channel switch source-substrate junctions are not forward
biased. This assures latchup free operation.
The oscillator, when unloaded, oscillates at a nominal
frequency of 10kHz for an input supply voltage of 15.0V.
This frequency can be lowered by the addition of an external
capacitor to the “OSC” terminal, or the oscillator may be
overdriven by an external clock.
The “LV” terminal may be tied to GROUND to bypass the
internal series regulator and improve low voltage (LV)
operation. At medium to high voltages (+10V to +20V), the
LV pin is left floating to prevent device latchup.
Pinouts
CAP+
TEST
CAP-
GND
NC
NC
NC
ICL7662CBD-0 (SOIC)
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2
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7
TOP VIEW
®
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Data Sheet
V+
OSC
NC
LV
NC
NC
V
OUT
CAP+
TEST
CAP-
GND
1-888-INTERSIL or 1-888-352-6832
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
ICL7662 (PDIP)
TOP VIEW
Features
• No External Diode Needed Over Entire Temperature
• Pin Compatible With ICL7660
• Simple Conversion of +15V Supply to -15V Supply
• Simple Voltage Multiplication (V
• 99.9% Typical Open Circuit Voltage Conversion
• 96% Typical Power Efficiency
• Wide Operating Voltage Range 4.5V to 20.0V
• Easy to Use - Requires Only 2 External Non-Critical
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• On Board Negative Supply for Dynamic RAMs
• Localized µProcessor (8080 Type) Negative Supplies
• Inexpensive Negative Supplies
• Data Acquisition Systems
• Up to -20V for Op Amps
Range
Efficiency
Passive Components
8
7
6
5
V+
OSC
LV
V
January 9, 2006
OUT
All other trademarks mentioned are the property of their respective owners.
CAP+
TEST
ICL7662CBD AND IBD (SOIC)
GND
|
NC
NC
NC
NC
Copyright Intersil Americas Inc. 2002, 2005, 2006. All Rights Reserved
Intersil (and design) is a registered trademark of Intersil Americas Inc.
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TOP VIEW
14
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V+
NC
OSC
LV
NC
V
CAP-
OUT
OUT
= (-)nV
ICL7662
IN
FN3181.4
)

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