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參數(shù)資料
| 型號(hào)： | ICL7660SMTV |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | Super Voltage Converter |
| 中文描述： | SWITCHED CAPACITOR CONVERTER, 17.5 kHz SWITCHING FREQ-MAX, MBCY8 |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大小： | 77K |
| 代理商： | ICL7660SMTV |
3-36
File Number
3179.2
ICL7660S
Super Voltage Converter
The ICL7660S Super Voltage Converter is a monolithic
CMOS voltage conversion IC that guarantees significant
performance advantages over other similar devices. It is a
direct replacement for the industry standard ICL7660 offering
an
extended
operating supply voltage range up to 12V, with
lower
supply current.
No external diode
is needed for the
ICL7660S. In addition, a
Frequency Boost pin
has been
incorporated to enable the user to achieve lower output
impedance despite using smaller capacitors. All
improvements are highlighted in the Electrical Specifications
section.
Critical parameters are guaranteed over the entire
commercial, industrial and military temperature ranges.
The ICL7660S performs supply voltage conversion from
positive to negative for an input range of 1.5V to 12V,
resulting in complementary output voltages of -1.5V to -12V.
Only 2 non-critical external capacitors are needed for the
charge pump and charge reservoir functions. The ICL7660S
can be connected to function as a voltage doubler and will
generate up to 22.8V with a 12V input. It can also be used as
a voltage multiplier or voltage divider.
The chip contains a series DC power supply regulator, RC
oscillator, voltage level translator, and four output power
MOS switches. The oscillator, when unloaded, oscillates at a
nominal frequency of 10kHz for an input supply voltage of
5.0V. This frequency can be lowered by the addition of an
external capacitor to the “OSC” terminal, or the oscillator
may be over-driven by an external clock.
The “LV” terminal may be tied to GND to bypass the internal
series regulator and improve low voltage (LV) operation. At
medium to high voltages (3.5V to 12V), the LV pin is left
floating to prevent device latchup.
Features
Guaranteed Lower Max Supply Current for All
Temperature Ranges
Wide Operating Voltage Range 1.5V to 12V
100% Tested at 3V
No External Diode Over Full Temperature and Voltage
Range
Boost Pin (Pin 1) for Higher Switching Frequency
Guaranteed Minimum Power Efficiency of 96%
Improved Minimum Open Circuit Voltage Conversion
Efficiency of 99%
Improved SCR Latchup Protection
Simple Conversion of +5V Logic Supply to
±
5V Supplies
Simple Voltage Multiplication V
OUT
= (-)nV
IN
Easy to Use - Requires Only 2 External Non-Critical
Passive Components
Improved Direct Replacement for Industry Standard
ICL7660 and Other Second Source Devices
Applications
Simple Conversion of +5V to
±
5V Supplies
Voltage Multiplication V
OUT
=
±
nV
IN
Negative Supplies for Data Acquisition Systems and
Instrumentation
RS232 Power Supplies
Supply Splitter, V
OUT
=
±
V
S
/2
Pinouts
ICL7660S (PDIP, SOIC)
TOP VIEW
ICL7660S (CAN)
TOP VIEW
V+ (AND CASE)
Ordering Information
PART
NUMBER
TEMP.
RANGE
(
o
C)
PACKAGE
PKG. NO.
ICL7660SCBA
0 to 70
8 Ld P SOIC (N)
M8.15
ICL7660SCPA
0 to 70
8 Ld PDIP
E8.3
ICL7660SIBA
-40 to 85
8 Ld P SOIC (N)
M8.15
ICL7660SIPA
-40 to 85
8 Ld PDIP
E8.3
ICL7660SMTV
(Note)
-55 to 125
8 Pin Metal Can
T8.C
NOTE: Add /883B to part number if 883B processing is required.
BOOST
CAP+
GND
CAP-
1
2
3
4
8
7
6
5
V+
OSC
LV
V
OUT
LV
CAP+
CAP-
BOOST
GND
OSC
V
OUT
2
4
6
1
3
7
5
8
Data Sheet
April 1999
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
Intersil Corporation 1999
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