MAX680CSA Datasheet Download

Part No.:
MAX680CSA
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Download Datasheet
Description:
[+5V to 【10V Voltage Converters]
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86 K
Page:
8 Pages
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Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
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19-0896; Rev 1; 7/96
+5V to ±10V Voltage Converters
________________General Description
The MAX680/MAX681 are monolithic, CMOS, dual
charge-pump voltage converters that provide ±10V out-
puts from a +5V input voltage. The MAX680/MAX681 pro-
vide both a positive step-up charge pump to develop
+10V from +5V input and an inverting charge pump to
generate the -10V output. Both parts have an on-chip,
8kHz oscillator. The MAX681 has the capacitors internal to
the package, and the MAX680 requires four external
capacitors to produce both positive and negative voltages
from a single supply.
The output source impedances are typically 150Ω, pro-
viding useful output currents up to 10mA. The low quies-
cent current and high efficiency make this device suitable
for a variety of applications that need both positive and
negative voltages generated from a single supply.
The MAX864/MAX865 are also recommended for new
designs. The MAX864 operates at up to 200kHz and uses
smaller capacitors. The MAX865 comes in the smaller
µMAX package.
____________________________Features
o
95% Voltage-Conversion Efficiency
o
85% Power-Conversion Efficiency
o
+2V to +6V Voltage Range
o
Only Four External Capacitors Required (MAX680)
o
No Capacitors Required (MAX681)
o
500µA Supply Current
o
Monolithic CMOS Design
MAX680/MAX681
_______________Ordering Information
PART
MAX680CPA
MAX680CSA
MAX680C/D
MAX680EPA
MAX680ESA
MAX680MJA
MAX681CPD
MAX681EPD
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
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
8 Plastic DIP
8 Narrow SO
Dice
8 Plastic DIP
8 Narrow SO
8 CERDIP
14 Plastic DIP
14 Plastic DIP
________________________Applications
The MAX680/MAX681 can be used wherever a single
positive supply is available and where positive and nega-
tive voltages are required. Common applications include
generating ±6V from a 3V battery and generating ±10V
from the standard +5V logic supply (for use with analog
circuitry). Typical applications include:
±6V from 3V Lithium Cell
Hand-Held Instruments
Data-Acquisition Systems
Panel Meters
±10V from +5V Logic
Supply
Battery-Operated
Equipment
Operational Amplifier
Power Supplies
_________Typical Operating Circuits
+5V
C1+
4.7µF
V
CC
4.7µF
+10V
_________________Pin Configurations
TOP VIEW
MAX680
V+
C1-
C1+
V-
C2- GND
4.7µF
4.7µF
C1- 1
C2+ 2
C2- 3
V- 4
8
V+
C1+
V
CC
GND
V+ 1
C1- 2
C1- 3
C2+ 4
C2- 5
C2- 6
V- 7
14 V
CC
13 V
CC
12 V
CC
-10V
GND
+5V
V
CC
FOUR PINS REQUIRED
(MAX681 ONLY)
V+
GND
MAX680
7
6
5
MAX681
11 V
CC
10 V+
9
8
GND
GND
+10V
MAX681
GND
V-
-10V
GND
DIP/SO
GND
+5V to ±10V CONVERTER
DIP
________________________________________________________________
Maxim Integrated Products
1
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