MAX660CSA Datasheet Download

Part No.:
MAX660CSA
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Download Datasheet
Description:
[CMOS Monolithic Voltage Converter]
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109 K
Page:
12 Pages
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Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
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19-3293; Rev. 2; 9/96
CMOS Monolithic Voltage Converter
_______________General Description
The MAX660 monolithic, charge-pump voltage inverter
converts a +1.5V to +5.5V input to a corresponding
-1.5V to -5.5V output. Using only two low-cost
capacitors, the charge pump’s 100mA output replaces
switching regulators, eliminating inductors and their
associated cost, size, and EMI. Greater than 90%
efficiency over most of its load-current range combined
with a typical operating current of only 120µA provides
ideal performance for both battery-powered and board-
level voltage conversion applications. The MAX660 can
also double the output voltage of an input power supply
or battery, providing +9.35V at 100mA from a +5V
input.
A frequency control (FC) pin selects either 10kHz typ or
80kHz typ (40kHz min) operation to optimize capacitor
size and quiescent current. The oscillator frequency
can also be adjusted with an external capacitor or
driven with an external clock. The MAX660 is a pin-
compatible, high-current upgrade of the ICL7660.
The MAX660 is available in both 8-pin DIP and small-
outline packages in commercial, extended, and military
temperature ranges.
For 50mA applications, consider the MAX860/MAX861
pin-compatible devices (also available in ultra-small
µMAX packages).
___________________________ Features
®
®
®
®
®
®
®
®
®
Small Capacitors
0.65V Typ Loss at 100mA Load
Low 120µA Operating Current
6.5Ω Typ Output Impedance
Guaranteed R
OUT
< 15
W
for C1 = C2 = 10
m
F
Pin-Compatible High-Current ICL7660 Upgrade
Inverts or Doubles Input Supply Voltage
Selectable Oscillator Frequency: 10kHz/80kHz
88% Typ Conversion Efficiency at 100mA
(I
L
to GND)
MAX660
______________Ordering Information
PART
MAX660CPA
MAX660CSA
MAX660C/D
MAX660EPA
MAX660ESA
MAX660MJA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP
*Contact factory for dice specifications.
________________________Applications
Laptop Computers
Medical Instruments
Interface Power Supplies
Hand-Held Instruments
Operational-Amplifier Power Supplies
_________Typical Operating Circuits
+V
IN
1.5V TO 5.5V
1
2
C1
1µF to 150µF
3
4
FC
V+ 8
7
6
CAP+
MAX660
OSC
GND
CAP-
LV
OUT
__________________Pin Configuration
TOP VIEW
5
INVERTED
NEGATIVE
VOLTAGE
OUTPUT
C2
1µF to 150µF
VOLTAGE INVERTER
DOUBLED
POSITIVE
VOLTAGE
OUTPUT
C2
1µF to 150µF
1
FC
CAP+
1
2
8
7
V+
OSC
LV
OUT
C1
1µF to 150µF
+V
IN
2.5V TO 5.5V
2
3
4
FC
V+ 8
7
6
5
CAP+
MAX660
OSC
GND
CAP-
LV
OUT
GND
3
CAP-
4
MAX660
6
5
DIP/SO
POSITIVE VOLTAGE DOUBLER
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800