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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1682 Datasheet

Switched-Capacitor Voltage Doublers

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MAX1682 pdf
19-1305; Rev 1; 8/98
Switched-Capacitor Voltage Doublers
General Description
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.
____________________________Features
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
________________________Applications
Small LCD Panels
Cell Phones
Handy-Terminals
PDAs
Typical Operating Circuit
Ordering Information
PART
TEMP.
RANGE
PIN-
SOT
PACKAGE TOP MARK
MAX1682C/D
0°C to +70°C
MAX1682EUK-T -40°C to +85°C
MAX1683C/D
0°C to +70°C
MAX1683EUK-T -40°C to +85°C
Dice*
5 SOT23-5
Dice*
5 SOT23-5
ACLL
ACCM
Note: These parts are available in tape-and-reel only. Minimum
order quantity is 2500 pieces.
*Dice are tested at TA = +25°C.
5
C1+
IN
4 VIN
INPUT
SUPPLY
VOLTAGE
C1
3
C1-
MAX1682
MAX1683
1
GND
OUT 2
OUTPUT
VOLTAGE
2 x VIN
C2
VOLTAGE DOUBLER
Pin Configuration
TOP VIEW
GND 1
5 C1+
MAX1682
OUT 2 MAX1683
C1- 3
4 IN
SOT23-5
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1682 Datasheet

Switched-Capacitor Voltage Doublers

No Preview Available !

MAX1682 pdf
Switched-Capacitor Voltage Doublers
ABSOLUTE MAXIMUM RATINGS
IN to GND .................................................................+6V to -0.3V
OUT to GND .......................................................+12V, VIN - 0.3V
OUT Output Current............................................................50mA
Output Short-Circuit Duration .................................1sec (Note 1)
Continuous Power Dissipation (TA = +70°C)
SOT23-5 (derate 7.1mW/°C above +70°C)...................571mW
Operating Temperature Range
MAX1682EUK/MAX1683EUK ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1: Avoid shorting OUT to GND, as it may damage the device. For temperatures above +85°C, shorting OUT to GND even
instantaneously will damage the device.
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.
ELECTRICAL CHARACTERISTICS
(VIN = +5.0V, capacitor values from Table 2, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
No-Load Supply Current
Supply Voltage Range
Minimum Operating Voltage
Oscillator Frequency
Output Resistance
Voltage Conversion Efficiency
CONDITIONS
TA = +25°C
MAX1682
MAX1683
RLOAD = 10k
TA = +25°C
TA = 0°C to +85°C
(Note 2)
TA = +25°C
MAX1682
MAX1683
IOUT = 5mA
TA = +25°C
TA = 0°C to +85°C
IOUT = 0mA, TA = +25°C
MIN TYP MAX UNITS
110 145
µA
230 310
2.0 1.7 5.5
V
2.1 1.8 5.5
1V
8.4 12 15.6
kHz
24.5 35 45.5
20 50
65
98 99.9
%
Note 2: Once started, the MAX1682/MAX1683 typically operate down to 1V.
ELECTRICAL CHARACTERISTICS
(VIN = +5.0V, capacitor values from Table 2, TA = -40°C to +85°C, unless otherwise noted.) (Note 3)
PARAMETER
No-Load Supply Current
Supply-Voltage Range
Oscillator Frequency
Output Resistance
Voltage Conversion Efficiency
MAX1682
MAX1683
RLOAD = 10k
MAX1682
MAX1683
IOUT = 5mA
IOUT = 0mA
CONDITIONS
MIN
2.3
6.6
17.5
97
TYP MAX UNITS
160
µA
350
5.5 V
18.6
kHz
57.8
65
%
Note 3: Specifications at -40°C to +85°C are guaranteed by design.
2 _______________________________________________________________________________________


Part Number MAX1682
Description Switched-Capacitor Voltage Doublers
Maker Maxim
Total Page 8 Pages
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