ICL7662MTV Intersil Corporation, ICL7662MTV Datasheet

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ICL7662MTV

Manufacturer Part Number
ICL7662MTV
Description
Manufacturer
Intersil Corporation
Datasheet

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Part Number:
ICL7662MTV
Manufacturer:
INTERSIL
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)
1
2
3
4
5
6
7
TOP VIEW
14
13
12
10
11
9
8
®
V+
OSC
NC
LV
NC
NC
V
1
OUT
Data Sheet
CAP+
CAP+
TEST
TEST
CAP-
ICL7662CBD AND IBD (SOIC)
GND
GND
NC
NC
NC
NC
1-888-INTERSIL or 321-724-7143
1
2
3
4
5
6
7
1
2
3
4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
ICL7662 (PDIP)
TOP VIEW
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
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
14
13
12
11
10
9
8
8
7
6
5
V+
NC
OSC
LV
NC
V
CAP-
V+
OSC
LV
V
OUT
OUT
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
April 1999
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
CAP+
TEST
GND
File Number
2
ICL7662 (CAN)
OUT
1
3
TOP VIEW
= (-)nV
V+
8
4
ICL7662
IN
)
5
7
3181.3
6
OSC
V
OUT
LV

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ICL7662MTV Summary of contents

Page 1

Data Sheet 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 ...

Page 2

... Ld SOIC (N) ICL7662CBD SOIC (N) ICL7662ITV - Pin Metal Can T8.C ICL7662IPA - PDIP ICL7662IBD - SOIC (N) ICL7662MTV -55 to 125 8 Pin Metal Can T8.C (Note 1) NOTE: 1. Add /883 to part number if /883B processing is required. Functional Block Diagram RC OSCILLATOR TEST P N OSC ...

Page 3

Absolute Maximum Ratings Supply Voltage ...

Page 4

Typical Performance Curves 190 170 LV = GND 150 130 110 (V) FIGURE 1. OUTPUT SOURCE RESISTANCE AS A FUNCTION OF SUPPLY VOLTAGE 180 170 160 150 140 ...

Page 5

Typical Performance Curves 15K 14K 13K 12K 11K 10K -55 - TEMPERATURE ( FIGURE 7. UNLOADED OSClLLATOR FREQUENCY AS A FUNCTION OF TEMPERATURE ...

Page 6

Typical Performance Curves NOTE: 5. These curves include in the supply current that current fed directly into the load R supply current goes directly to the positive side of the load, and the other half, through the ICL7662, to the ...

Page 7

FIGURE 15. IDEALIZED NEGATIVE CONVERTER Theoretical Power Efficiency Considerations In theory a voltage multiplier can approach 100% efficiency if certain conditions are met: ...

Page 8

10µ ICL7662 + 10µ 16A. FIGURE 16. SIMPLE NEGATIVE CONVERTER AND ITS OUTPUT EQUIVALENT Output Ripple ESR also affects the ripple voltage seen at ...

Page 9

FIGURE 19. CASCADING DEVICES FOR INCREASED OUTPUT VOLTAGE Changing the ICL7662 Oscillator Frequency It may be desirable in some applications, due to noise or other considerations, to increase the oscillator frequency. This is ...

Page 10

... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without 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 ...

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