MAX680CPA+ Maxim, MAX680CPA+ Datasheet

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MAX680CPA+

Manufacturer Part Number
MAX680CPA+
Description
Voltage Converter, CMOS, +5 V to +/- 10 V, 0 to 70 C, PDIP-8
Manufacturer
Maxim
Datasheet
1.MAX680CPA.pdf (8 pages)

Specifications of MAX680CPA+

Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
________________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.
________________________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:
19-0896; Rev 1; 7/96
±6V from 3V Lithium Cell
Hand-Held Instruments
Data-Acquisition Systems
Panel Meters
±10V from +5V Logic
Supply
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_________________Pin Configurations
C2+
C1-
C2-
V-
1
2
3
4
TOP VIEW
DIP/SO
MAX680
________________________________________________________________ Maxim Integrated Products
8
7
6
5
V+
C1+
V
GND
CC
Battery-Operated
Equipment
Operational Amplifier
Power Supplies
C2+
C1-
C1-
C2-
C2-
V+
V-
1
2
3
4
5
6
7
MAX681
+5V to ±10V Voltage Converters
DIP
14
13
12
11
10
9
8
V
V
V
GND
GND
V
V+
CC
CC
CC
CC
_______________Ordering Information
____________________________Features
_________Typical Operating Circuits
MAX680CPA
MAX680CSA
MAX680C/D
MAX680EPA
MAX680ESA
MAX680MJA
MAX681CPD
MAX681EPD
95% Voltage-Conversion Efficiency
85% Power-Conversion Efficiency
+2V to +6V Voltage Range
Only Four External Capacitors Required (MAX680)
No Capacitors Required (MAX681)
500µA Supply Current
Monolithic CMOS Design
(MAX681 ONLY)
GND
FOUR PINS REQUIRED
GND
PART
+5V
+5V
4.7 F
4.7 F
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
-40°C to +85°C
+5V to ±10V CONVERTER
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
C1-
C1+
C2-
C1+
MAX680
MAX681
GND
GND
V
V
CC
CC
V+
V-
V+
V-
8 Plastic DIP
8 Narrow SO
Dice
8 Plastic DIP
8 Narrow SO
8 CERDIP
14 Plastic DIP
14 Plastic DIP
PIN-PACKAGE
4.7 F
4.7 F
+10V
-10V
GND
+10V
-10V
GND
1

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MAX680CPA+ Summary of contents

Page 1

... C2- 5 C2- 6 DIP/ ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 +5V to ±10V Voltage Converters ____________________________Features 95% Voltage-Conversion Efficiency 85% Power-Conversion Efficiency +2V to +6V Voltage Range Only Four External Capacitors Required (MAX680) No Capacitors Required (MAX681) 500µA Supply Current ...

Page 2

... V CC Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...

Page 3

Operating Characteristics (T = +25°C, unless otherwise noted.) A OUTPUT RESISTANCE vs. SUPPLY VOLTAGE 250 C1- 200 R + OUT 150 100 R - OUT 50 0 2.0 3.0 4.0 5.0 V (V) OUTPUT VOLTAGE vs. ...

Page 4

Voltage Converters 4.7 F MAX680 C2 GND Figure 1. ...

Page 5

... The MAX680/MAX681 have on-chip zener diodes that clamp V to approximately 6.2V 12.4V, and -12.4V. Never exceed the maximum supply volt- age: excessive current may be shunted by these diodes, potentially damaging the chip. The MAX680/ MAX681 operate over the entire operating temperature range with an input voltage of +2V to +6V. ...

Page 6

Voltage Converters 22 F MAX680 C2 GND Figure 4. Paralleling MAX680s For Lower Source Resistance The MAX680/MAX681 are not voltage ...

Page 7

Paralleling Devices Paralleling multiple MAX680/MAX681s reduces the out- put resistance of both the positive and negative con- verters. The effective output resistance is the output resistance of a single device divided by the number of devices. As Figure 4 shows, ...

Page 8

... E H Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...

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