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MAX1641 Datasheet Adjustable-output / Switch-mode Current Sources

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-1245; Rev 0; 7/97 KIT ATION EVALU LE B A IL A AV Adjustable-Output, Switch-Mode Current Sources with Synchronous.

General Description

The MAX1640/MAX1641 CMOS, adjustable-output, switch-mode current sources operate from a +5.5V to +26V input, and are ideal for microprocessor-controlled battery chargers.

Charging current, maximum output voltage, and pulse-trickle charge are programmed with external resistors.

Programming the off-time modifies the switching frequency, suppressing undesirable harmonics in noise-sensitive circuits.

Key Features

  • o 95% Efficiency o +5.5V to +26V Input Supply Range o 2V to 24V Adjustable-Output Voltage Range o 100% Maximum Duty Cycle (Low Dropout) o Up to 500kHz PWM Operation o Optional Synchronous Rectifier o 16-Pin QSOP Package o Current-Sense Accuracy: 2% (MAX1641) 5.3% (MAX1640) _______________General.

MAX1641 Distributor