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MAX1721EUT-T

Description
Switching Voltage Regulators Switched-Cap Voltage Inverter w/Shutdown
CategoryPower/power management    The power supply circuit   
File Size566KB,8 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX1721EUT-T Overview

Switching Voltage Regulators Switched-Cap Voltage Inverter w/Shutdown

MAX1721EUT-T Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSOT-23
package instructionLSSOP, TSOP6,.11,37
Contacts6
Reach Compliance Codenot_compliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHED CAPACITOR CONVERTER
Maximum input voltage5.5 V
Minimum input voltage1.6 V
Nominal input voltage5 V
JESD-30 codeR-PDSO-G6
JESD-609 codee0
length2.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals6
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current0.025 A
Nominal output voltage-5.5 V
Package body materialPLASTIC/EPOXY
encapsulated codeLSSOP
Encapsulate equivalent codeTSOP6,.11,37
Package shapeRECTANGULAR
Package formSMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)240
Certification statusNot Qualified
Maximum seat height1.45 mm
surface mountYES
Switch configurationDOUBLER INVERTER
Maximum switching frequency200 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn85Pb15)
Terminal formGULL WING
Terminal pitch0.95 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width1.625 mm
19-1439; Rev 2; 4/04
SOT23, Switched-Capacitor
Voltage Inverters with Shutdown
General Description
The ultra-small MAX1719/MAX1720/MAX1721 monolithic,
CMOS charge-pump inverters accept input voltages
ranging from +1.5V to +5.5V. The MAX1720 operates at
12kHz, and the MAX1719/MAX1721 operate at 125kHz.
High efficiency, small external components, and logic-
controlled shutdown make these devices ideal for both
battery-powered and board-level voltage conversion
applications.
Oscillator control circuitry and four power MOSFET
switches are included on-chip. A typical MAX1719/
MAX1720/MAX1721 application is generating a -5V
supply from a +5V logic supply to power analog circuitry.
All three parts come in a 6-pin SOT23 package and can
deliver a continuous 25mA output current.
For pin-compatible SOT23 switched-capacitor voltage
inverters without shutdown (5-pin SOT23), see the
MAX828/MAX829 and MAX870/MAX871 data sheets. For
applications requiring more power, the MAX860/MAX861
deliver up to 50mA. For regulated outputs (up to -2 x V
IN
),
refer to the MAX868. The MAX860/MAX861 and MAX868
are available in space-saving µMAX packages.
1nA Logic-Controlled Shutdown
6-Pin SOT23 Package
99.9% Voltage Conversion Efficiency
50µA Quiescent Current (MAX1720)
+1.5V to +5.5V Input Voltage Range
25mA Output Current
Requires Only Two 1µF Capacitors
(MAX1719/MAX1721)
Features
MAX1719/MAX1720/MAX1721
Ordering Information
PART
MAX1719EUT
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
6 SOT23-6
SOT
TOP MARK
AACA
AABS
AABT
Applications
Local Negative Supply from a Positive Supply
Small LCD Panels
GaAs PA Bias Supply
Handy-Terminals, PDAs
Battery-Operated Equipment
MAX1720EUT
MAX1721EUT
Typical Operating Circuit
1µF
Pin Configuration
TOP VIEW
INPUT
1.5V to 5.5V
C1+
IN
C1-
OUT
NEGATIVE
OUTPUT
-1
·
V
IN
25mA
1µF
OUT
1
6
C1+
IN
2
MAX1721
ON
OFF
SHDN
GND
MAX1719
MAX1720
MAX1721
5
SHDN (SHDN)
C1-
3
4
GND
SOT23-6
( ) ARE FOR MAX1719
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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