MAX861ISA Electronic IC Chips Capacitor Voltage Converters

Stock Offer (Hot Sell)

50mA, Frequency-Selectable, Switched-Capacitor Voltage Converters

General Description

The MAX860/MAX861 charge-pump voltage converters invert input voltages ranging from +1.5V to +5.5V, or double input voltages ranging from +2.5V to +5.5V. Because of their high switching frequencies, these devices use only two small, low-cost capacitors. Their 50mA output makes switching regulators unnecessary, eliminating inductors and their associated cost, size, and EMI.

Greater than 90% efficiency over most of the load-current range, combined with a typical operating current of only 200µA (MAX860), provides ideal performance for both battery-powered and board-level voltage-conversion applications.

A frequency-control (FC) pin provides three switchingfrequencies to optimize capacitor size and quiescent current and to prevent interference with sensitive circuitry. Each device has a unique set of three available frequencies. A shutdown (S—H —D —N – ) pin reduces current consumption to less than 1µA.

The MAX860/MAX861 are suitable for use in applications where the ICL7660 and MAX660's switching frequencies are too low. The MAX860/MAX861 are available in 8-pin µMAX and SO packages.

Applications

Portable Computers

Medical Instruments

Interface Power Supplies

Hand-Held Instruments

Operational-Amplifier Power Supplies

Features

♦ 8-Pin, 1.11mm High µMAX Package

♦ Invert or Double the Input Supply Voltage

♦ Three Selectable Switching Frequencies

♦ High Frequency Reduces Capacitor Size

♦ 87% Efficiency at 50mA

♦ 200µA Quiescent Current (MAX860)

♦ 1µA Shutdown Supply Current

♦ 600mV Voltage Drop at 50mA Load

♦ 12Ω Output Resistance

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (VDD to GND or GND to OUT)...................+6.0V

Input Voltage Range (LV, FC, SHDN ) ...................(OUT - 0.3V) to (VDD + 0.3V)

Continuous Output Current (OUT, VDD) .............................60mA

Output Short-Circuit to GND (Note 1)...................................1sec

Continuous Power Dissipation (TA = +70°C)

SO (derate 5.88mW/°C above +70°C).........................471mW

µMAX (derate 4.10mW/°C above +70°C) ....................330mW

CERDIP (derate 8.00mW/°C above +70°C).................640mW

Operating Temperature Ranges

MAX86_I_A ......................................................-25°C to +85°C

MAX86_ESA.....................................................-40°C to +85°C

MAX86_MJA ..................................................-55°C to +125°C

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10sec) .............................+300°C

Note 1: OUT may be shorted to GND for 1sec without damage, but shorting OUT to VDD may damage the device and should be avoided. Also, for temperatures above +85°C, OUT must not be shorted to GND or VDD, even instantaneously, or device damage may result.

Typical Operating Circuit

Pin Configuration

CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electronic components that are hard to find and even obsolete. We have taken pride in our innovation, reliability and service, especially in the semiconductor marketplace.
Our distribution brands include XILINX，ALTERA，ATMEL, INFINEON, ST,SAMSUNG，TEXAS INSTRUMENTS，ON，TOSHIBA，，MICROCHIP，CYPRESS，FREESCALE，etc. We distributes over 200,000 products ranging from semiconductors to resistors, capacitors, diodes, inductors, connectors, transistors, sensors and so on.
Our mission is to meet and exceed all the expecations of what we supply to customers.