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What is 7660CBA?

This electronic component, produced by the manufacturer "Intersil Corporation", performs the same function as "CMOS Voltage Converters".


7660CBA Datasheet PDF - Intersil Corporation

Part Number 7660CBA
Description CMOS Voltage Converters
Manufacturers Intersil Corporation 
Logo Intersil Corporation Logo 


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®
Data Sheet
ICL7660, ICL7660A
October 10, 2005
FN3072.7
CMOS Voltage Converters
The Intersil ICL7660 and ICL7660A are monolithic CMOS
power supply circuits which offer unique performance
advantages over previously available devices. The ICL7660
performs supply voltage conversions from positive to
negative for an input range of +1.5V to +10.0V resulting in
complementary output voltages of -1.5V to -10.0V and the
ICL7660A does the same conversions with an input range of
+1.5V to +12.0V resulting in complementary output voltages
www.DataSheoeft-41U..5cVomto -12.0V. Only 2 noncritical external capacitors are
needed for the charge pump and charge reservoir functions.
The ICL7660 and ICL7660A can also be connected to
function as voltage doublers and will generate output
voltages up to +18.6V with a +10V input.
Contained on the chip are a series DC supply regulator, RC
oscillator, voltage level translator, and 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 5.0V. 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 (+3.5V to +10.0V for
the ICL7660 and +3.5V to +12.0V for the ICL7660A), the LV
pin is left floating to prevent device latchup.
Pinouts
ICL7660, ICL7660A
(8 LD PDIP, SOIC)
TOP VIEW
NC 1
CAP+ 2
GND 3
CAP- 4
8 V+
7 OSC
6 LV
5 VOUT
Features
• Simple Conversion of +5V Logic Supply to ±5V Supplies
• Simple Voltage Multiplication (VOUT = (-) nVIN)
• Typical Open Circuit Voltage Conversion Efficiency 99.9%
• Typical Power Efficiency 98%
• Wide Operating Voltage Range
- ICL7660 . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to 10.0V
- ICL7660A . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to 12.0V
• ICL7660A 100% Tested at 3V
• Easy to Use - Requires Only 2 External Non-Critical
Passive Components
• No External Diode Over Full Temp. and Voltage Range
• 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
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 1999-2004, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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7660CBA equivalent
ICL7660, ICL7660A
Typical Performance Curves (Test Circuit of Figure 11) (Continued)
350
300
250
200
150
100
50
www.DataSheet4U.c0om
-55
-25
IOUT = 1mA
V+ = +2V
V+ = 5V
0 25 50 75
TEMPERATURE (°C)
100 125
FIGURE 3. OUTPUT SOURCE RESISTANCE AS A FUNCTION
OF TEMPERATURE
100
98
TA = 25°C
96 IOUT = 1mA
94
92
90 IOUT = 15mA
88
86
84
82
V+ = +5V
80
100
1K
OSC. FREQUENCY fOSC (Hz)
10K
FIGURE 4. POWER CONVERSION EFFICIENCY AS A
FUNCTION OF OSC. FREQUENCY
10K
1K
100
V+ = 5V
TA = 25°C
10
1.0
10
100
COSC (pF)
1000
10K
FIGURE 5. FREQUENCY OF OSCILLATION AS A FUNCTION
OF EXTERNAL OSC. CAPACITANCE
5
4
TA = 25°C
V+ = +5V
3
2
1
0
-1
-2
-3
-4
SLOPE 55
-5
0 10 20 30 40 50 60 70 80
LOAD CURRENT IL (mA)
FIGURE 7. OUTPUT VOLTAGE AS A FUNCTION OF OUTPUT
CURRENT
20
18
16
14
12
10
8
V+ = +5V
6
-50 -25
0 25 50 75
TEMPERATURE (°C)
100
125
FIGURE 6. UNLOADED OSCILLATOR FREQUENCY AS A
FUNCTION OF TEMPERATURE
100
90 PEFF
80
100
I+ 90
80
70 70
60 60
50 50
40 40
30 30
20
10
0
0
20
TA = 25°C
V+ = +5V
10
0
10 20 30 40 50 60
LOAD CURRENT IL (mA)
FIGURE 8. SUPPLY CURRENT AND POWER CONVERSION
EFFICIENCY AS A FUNCTION OF LOAD
CURRENT
5 FN3072.7
October 10, 2005


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Featured Datasheets

Part NumberDescriptionMFRS
7660CBAThe function is CMOS Voltage Converters. Intersil CorporationIntersil Corporation

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