Analog Devices Inc.

Category: Power Management ICs

The MAX1760/MAX1760H are high-efficiency, low-noise,step-up DC-DC converters intended for use in battery-poweredwireless applications. They combine low quiescentsupply current (100µA) with a high 1MHz operatingfrequency. Small external components and tiny 10-pinTDFN and µMAX® packages make this device an excellentchoice for small hand-held applications. TheMAX1760 is activated by a logic-low active-low ON signal while theMAX1760H is activated by a logic-high ON input.Both devices use a synchronous-rectified pulse-width-modulation(PWM) boost topology to generate 2.5V to5.5V outputs from a wide range of inputs, such as 1 to 3alkaline or NiCd/NiMH cells or a single lithium-ion (Li+)cell. Proprietary Idle-Mode™ circuitry significantlyimproves light-load efficiency and smoothly transitions tofixed-frequency PWM operation at higher load currents.Low-noise, forced-PWM mode is available for applicationsrequiring constant-frequency operation at all loadcurrents. PWM operation can also be synchronized toan external clock to protect sensitive frequency bandsin communications equipment. Analog soft-start andadjustable current limit permit optimization of efficiency,external component size, and output voltage ripple.ApplicationsDigital Cordless PhonesHandheld InstrumentsPalmtop ComputersPCS PhonesPersonal CommunicatorsTwo-Way PagingWireless Handsets

$3.04 - $4.30