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Part Number: MAX1595

 

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Description: The MAX1595 charge-pump regulator generates either 3.3V or 5V from a 1.8V to 5.5V input. The unique co...


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MAX1595 General Description


The MAX1595 charge-pump regulator generates either 3.3V or 5V from a 1.8V to 5.5V input. The unique control architecture allows the regulator to step up or step down the input voltage to maintain output regulation.The 1MHz switching frequency, combined with a unique control scheme, allows the use of a ceramic capacitor as small as 1F for 125mA of output current.

The complete regulator requires three external capacitors-no inductor is needed. The MAX1595 is specifically
designed to serve as a high-power, highefficiency auxiliary supply in applications that demand a compact design. The MAX1595 is offered in spacesaving 8-pin MAX and high-power 12-pin thin QFN packages.

MAX1595 Maximum Ratings

IN, OUT, AOUT to GND............................................-0.3V to +6V
SHDN to PGND ........................................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
CXN to PGND.....................-0.3V to (Lower of IN + 0.8V or 6.3V)
CXP to GND ................................-0.8V to (Higher of OUT + 0.8V
                                         or IN + 0.8V but not greater than 6V)
Continuous Output Current .............................................150mA

Continuous Power Dissipation (TA = +70°C)
8-Pin MAX (derate 4.5mW/°C above +70°C) ............362mW
12-Pin Thin QFN (derate 18.5mW/°C
    above +70°C)............................................................1481mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C

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.

MAX1595 Features

` Ultra-Small: Requires Only Three Ceramic Capacitors
` No Inductors Required
` Up to 125mA Output Current
` Regulated ±3% Output Voltage
` 1MHz Switching Frequency
` 1.8V to 5.5V Input Voltage
` 220A Quiescent Current
` 0.1A Shutdown Current
` Load Disconnect in Shutdown

MAX1595 Typical Application

·White LED Power
·Flash Memory Supplies
·Battery-Powered Applications
·Miniature Equipment
·PCMCIA Cards
·3.3V to 5V Local Conversion Applications
·Backup-Battery Boost Converters
·3V to 5V GSM SIMM Cards

MAX1595 Connection Diagram

MAX1595  Connection Diagram

MAX1595 datasheet

MAX1595
PDF/DataSheet Download

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