MAX1719EUT+T Maxim Integrated Products, MAX1719EUT+T Datasheet

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MAX1719EUT+T

Manufacturer Part Number
MAX1719EUT+T
Description
IC VOLT INV SW CAP SOT23-6
Manufacturer
Maxim Integrated Products
Type
Switched Capacitor (Charge Pump), Invertingr
Datasheet
1.MAX1719EUT-T.pdf (8 pages)

Specifications of MAX1719EUT+T

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
-1.5 ~ -5.5 V
Current - Output
25mA
Frequency - Switching
125kHz
Voltage - Input
1.5 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Power - Output
696mW
Function
Inverting
Output Voltage
- 1.4 V to - 5.5 V
Output Current
25 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
refer to the MAX868. The MAX860/MAX861 and MAX868
are available in space-saving µMAX packages.
19-1439; Rev 2; 4/04
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.
ON
1.5V to 5.5V
Local Negative Supply from a Positive Supply
Small LCD Panels
GaAs PA Bias Supply
Handy-Terminals, PDAs
Battery-Operated Equipment
INPUT
OFF
Typical Operating Circuit
IN
SHDN
________________________________________________________________ Maxim Integrated Products
C1+
MAX1721
General Description
GND
1µF
C1-
OUT
Applications
Voltage Inverters with Shutdown
1µF
NEGATIVE
OUTPUT
-1 · V
25mA
IN
SOT23, Switched-Capacitor
IN
),
♦ ♦ 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
MAX1719EUT
MAX1720EUT
MAX1721EUT
( ) ARE FOR MAX1719
(MAX1719/MAX1721)
PART
TOP VIEW
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
OUT
C1-
IN
1
2
3
Ordering Information
SOT23-6
MAX1719
MAX1720
MAX1721
Pin Configuration
6 SOT23-6
6 SOT23-6
6 SOT23-6
PACKAGE
6
5
4
PIN-
C1+
SHDN (SHDN)
GND
Features
TOP MARK
AACA
AABS
AABT
SOT
1

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MAX1719EUT+T Summary of contents

Page 1

... OUT IN MAX1721 SHDN ON OFF GND ________________________________________________________________ Maxim Integrated Products 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. SOT23, Switched-Capacitor Voltage Inverters with Shutdown ♦ ♦ 1nA Logic-Controlled Shutdown ♦ ♦ 6-Pin SOT23 Package ♦ ...

Page 2

SOT23, Switched-Capacitor Voltage Inverters with Shutdown ABSOLUTE MAXIMUM RATINGS IN to GND .................................................................-0.3V to +6V OUT to GND .............................................................-6V to +0.3V C1+, SHDN, SHDN to GND .........................-0. C1- to GND...............................................(V OUT Output Current..........................................................100mA OUT Short Circuit to GND..............................................Indefinite ...

Page 3

ELECTRICAL CHARACTERISTICS = +5V, SHDN = GND (MAX1719), SHDN = IN (MAX1720/MAX1721 10µF (MAX1720 1µ (MAX1719/MAX1721), circuit of Figure 1, T PARAMETER SYMBOL Supply Voltage Range V Quiescent Current (Note ...

Page 4

SOT23, Switched-Capacitor Voltage Inverters with Shutdown = +5V, SHDN = GND (MAX1719), SHDN = IN (MAX1720/MAX1721 C3, T (Circuit of Figure erwise noted.) OUTPUT RESISTANCE vs. INPUT VOLTAGE MAX1719/ ...

Page 5

SHDN = GND (MAX1719), SHDN = IN (MAX1720/MAX1721 C3, T (Circuit of Figure otherwise noted.) MAX1721 START-UP FROM SHUTDOWN MAX1720/21toc13 V OUT 2V/div V SHDN 5V/div 50µs/div R = 1kΩ L ...

Page 6

SOT23, Switched-Capacitor Voltage Inverters with Shutdown C1 1µF (10µ INPUT C1+ C1- 1. OUT C3 1µF (10µF) MAX1719* MAX1721 5 ON SHDN OFF GND 4 NOTE CAPACITORS ARE FOR MAX1720. *ON/OFF POLARITY ...

Page 7

Flying Capacitor (C1) Increasing the flying capacitor’s value reduces the out- put resistance. Above a certain point, increasing C1’s capacitance has a negligible effect because the output resistance becomes dominated by the internal switch resistance and capacitor ESR. Output Capacitor ...

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 © 2004 Maxim Integrated Products SHDN (MAX1719) ...

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