MAX1682EUK Maxim Integrated Products, MAX1682EUK Datasheet

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MAX1682EUK

Manufacturer Part Number
MAX1682EUK
Description
Manufacturer
Maxim Integrated Products
Datasheet

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The ultra-small MAX1682/MAX1683 monolithic, CMOS
charge-pump voltage doublers accept input voltages
ranging from +2.0V to +5.5V. Their high voltage-con-
version efficiency (over 98%) and low operating current
(110µA for MAX1682) make these devices ideal for
both battery-powered and board-level voltage-doubler
applications.
Oscillator control circuitry and four power MOSFET
switches are included on-chip. The MAX1682 operates
at 12kHz, and the MAX1683 operates at 35kHz. A typi-
cal application includes generating a 6V supply to
power an LCD display in a hand-held PDA. Both parts
are available in a 5-pin SOT23 package and can deliver
30mA with a typical voltage drop of 600mV.
________________________Applications
19-1305; Rev 2; 9/00
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Small LCD Panels
Cell Phones
Handy-Terminals
PDAs
C1
5
3
1
Typical Operating Circuit
C1+
C1-
GND
________________________________________________________________ Maxim Integrated Products
VOLTAGE DOUBLER
MAX1682
MAX1683
General Description
Switched-Capacitor Voltage Doublers
OUT
IN
4
2
V
IN
C2
INPUT
SUPPLY
VOLTAGE
OUTPUT
VOLTAGE
2 x V
IN
o 5-Pin SOT23 Package
o +2.0V to +5.5V Input Voltage Range
o 98% Voltage-Conversion Efficiency
o 110µA Quiescent Current (MAX1682)
o Requires Only Two Capacitors
o Up to 45mA Output Current
Note: These parts are available in tape-and-reel only. Minimum
order quantity is 2500 pieces.
____________________________Features
MAX1682EUK-T -40°C to +85°C
MAX1683EUK-T -40°C to +85°C
PART
TOP VIEW
GND
OUT
C1-
RANGE
TEMP.
1
2
3
Ordering Information
SOT23-5
MAX1682
MAX1683
Pin Configuration
PACKAGE
5 SOT23-5
5 SOT23-5
PIN-
5 C1+
4
IN
TOP MARK
ACCM
ACCL
SOT
1

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MAX1682EUK Summary of contents

Page 1

... Input Voltage Range o 98% Voltage-Conversion Efficiency o 110µA Quiescent Current (MAX1682) o Requires Only Two Capacitors 45mA Output Current PART MAX1682EUK-T -40°C to +85°C MAX1683EUK-T -40°C to +85°C Note: These parts are available in tape-and-reel only. Minimum order quantity is 2500 pieces. INPUT 4 ...

Page 2

... Note 3: Specifications at -40°C to +85°C are guaranteed by design. 2 _______________________________________________________________________________________ Operating Temperature Range - 0.3V MAX1682EUK/MAX1683EUK ...........................-40°C to +85°C IN Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10sec) .............................+300°C = 0°C to +85°C, unless otherwise noted. Typical values are at T ...

Page 3

Switched-Capacitor Voltage Doublers (Typical Operating Circuit +5V 10µF for the MAX1682 and 3.3µF for the MAX1683 noted.) OUTPUT RESISTANCE vs. SUPPLY VOLTAGE MAX1683 3.3µF 60 ...

Page 4

Switched-Capacitor Voltage Doublers (Typical Operating Circuit +5V 10µF for the MAX1682 and 3.3µF for the MAX1683 noted.) MAX1682 OSCILLATOR FREQUENCY vs. TEMPERATURE 12 12 3.3V IN ...

Page 5

Switched-Capacitor Voltage Doublers _____________________Pin Description PIN NAME FUNCTION 1 GND Ground Doubled Output Voltage. Connect C2 2 OUT between OUT and GND. Negative Terminal of the Flying 3 C1- Capacitor 4 IN Input Supply Positive Terminal of the Flying 5 ...

Page 6

Switched-Capacitor Voltage Doublers Conversion losses occur during the charge transfer between C1 and C2 when there is a voltage difference between them. The power loss is:     CONVERSION LOSS IN ...

Page 7

Switched-Capacitor Voltage Doublers Cascading Devices Devices can be cascaded to produce an even larger voltage (Figure 3). The unloaded output voltage is nom- inally ( where n is the number of voltage IN doublers used. ...

Page 8

... 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 © 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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