ICL7660 Datasheet, PDF (1/10 Pages) Intersil Corporation – CMOS Voltage Converters

TIGER ELECTRONIC CO.,LTD
ICL7660 / 7660A
CMOS Voltage Converters
The 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
of -1.5V to -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
Ordering Information
TEMP.
PART NO. RANGE (^oC)
PACKAGE
ICL7660CBA
ICL7660CBA-T
0 to 70
0 to 70
8 Ld SOIC (N)
8 Ld SOIC (N)
Tape and Reel
ICL7660CPA
ICL7660MTV†
0 to 70
0 to 70
8 Ld PDIP
8 Pin Metal Can
ICL7660ACBA
0 to 70 8 Ld SOIC (N)
ICL7660ACBA-T
0 to 70 8 Ld SOIC (N)
Tape and Reel
ICL7660ACPA
0 to 70 8 Ld PDIP
ICL7660AIBA
-40 to 85 8 Ld SOIC (N)
ICL7660AIBA-T
-40 to 85 8 Ld SOIC (N)
Tape and Reel
ICL7660AIPA
-40 to 85 8 Ld PDIP
PKG.
NO.
M8.15
M8.15
E8.3
T8.C
M8.15
M8.15
E8.3
M8.15
M8.15
E8.3
Features
• Simple Conversion of +5V Logic Supply to 5V Supplies
• Simple Voltage Multiplication (V_OUT = (-) nV_IN)
• 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
Applications
• On Board Negative Supply for Dynamic RAMs
• Localized Processor (8080 Type) Negative Supplies
• Inexpensive Negative Supplies
• Data Acquisition Systems
Pinouts
ICL7660, ICL7660A (PDIP, SOIC)
TOP VIEW
NC 1
CAP+ 2
GND 3
CAP- 4
8 V+
7 OSC
6 LV
5 V_OUT
ICL7660 (METAL CAN)
TOP VIEW
V+ (AND CASE)
8
NC 1
7 OSC
CAP+ 2
6 LV
GND 3
4
CAP-
5 V_OUT