MAX762

12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Converters

GeneralDescription TheMAX761/MAX762step-upswitchingregulatorsprovidehighefficiencyoverawiderangeofloadcurrents,deliveringupto150mA.Aunique,current-limitedpulse-frequency-modulated(PFM)controlschemegivesthedevicesthebenefitsofpulse-width-modulated(PWM)converters

MAX762

12V/15V或可调、高效率、低IQ、升压型DC-DC转换器; \n• High Efficiency for a Wide Range of Load Currents \n• 12V/150mA Flash Memory Programming Supply \n• 110µA Max Supply Current \n• 5µA Max Shutdown Supply Current \n• 2V to 16.5V Input Voltage Range \n• 12V (MAX761), 15V (MAX762) or Adjustable Output \n• Current-Limited PFM Control Scheme \n• 300kHz Switching Frequency \n• Internal, 1A, N-Channel Power FET \n• LBI/LBO Low-Battery Comparator;

The MAX761/MAX762 step-up switching regulators provide high efficiency over a wide range of load currents, delivering up to 150mA. A unique, current-limited pulse-frequency-modulated (PFM) control scheme gives the devices the benefits of pulse-width-modulated (PWM) converters (high efficiency with heavy loads), while using less than 110µA of supply current (vs. 2mA to 10mA for PWM converters). The result is high efficiency over a wide range of loads.\n The MAX761/MAX762 input voltage range is 2V to 16.5V. Output voltages are preset to 12V (MAX761) and 15V (MAX762), or they can be set with two external resistors. With a 5V input, the MAX761 guarantees a 12V, 150mA output. Its high efficiency, low supply current, fast start-up time, SHDN controlling capability, and small size make the MAX761 ideal for powering flash memory.\n The MAX761/MAX762 have an internal 1A power MOSFET, making them ideal for minimum-component, low- and medium-power applications. These devices use tiny external components, and their high switching frequencies (up to 300kHz) allow for small surface-mount magnetics.\n For increased output drive capability or higher output voltages, use the MAX770-MAX773, which are similar in design to the MAX761/MAX762, but drive external power MOSFETs. For stepping up to 5V, see the MAX756/MAX757 and MAX856-MAX859 data sheets.

MAX7624

改进的MX7524; • Microprocessor Compatible \n• On-chip Data Latches \n• Guaranteed Monotonic Over Temp. \n• Low Power Consumption \n• 8, 9, 10-Bit Linearity \n• MX7524 TTL/CMOS Compatible at +5V \n• MAX7624 TTL/CMOS Compatible at +12V to +15V;

The MX7524/MAX7624 are CMOS 8-big digital-to-analog converters (DAC) which will interface directly with most microprocessors. On-chip input latches make the DAC interface similar to a RAM write cycle where active-low CS and active-low WR are the only control inputs required. Linearity up to ±1/8 LSB is available (MX7524L/C/U grades) and power consumption is less than 10mW. Monotonicity is guaranteed over the full temperature range.\nFor the MX7524, +5V TTL and CMOS logic compatibility is guaranteed when using +5V power. Over the supply range of +5V to +15V, all logic inputs are high voltage CMOS compatible. The MAX7624 has +5V TTL/CMOS compatible inputs for a +12V to +15V supply range.

MAX7624

CMOS 8-Bit Buffered Multiplying DACs

CMOS8-BitBufferedMultiplyingDACs Applications μpControlledGain FunctionGenerators BusStructuredInstruments AutomaticTestEquipment DigitalControlSystems

MAX7624C/D

CMOS 8-Bit Buffered Multiplying DACs

CMOS8-BitBufferedMultiplyingDACs Applications μpControlledGain FunctionGenerators BusStructuredInstruments AutomaticTestEquipment DigitalControlSystems

MAX7624CPE

CMOS 8-Bit Buffered Multiplying DACs

CMOS8-BitBufferedMultiplyingDACs Applications μpControlledGain FunctionGenerators BusStructuredInstruments AutomaticTestEquipment DigitalControlSystems

MAX7624CSE

CMOS 8-Bit Buffered Multiplying DACs

CMOS8-BitBufferedMultiplyingDACs Applications μpControlledGain FunctionGenerators BusStructuredInstruments AutomaticTestEquipment DigitalControlSystems

MAX7624CSLASHD

CMOS 8-Bit Buffered Multiplying DACs

CMOS8-BitBufferedMultiplyingDACs Applications μpControlledGain FunctionGenerators BusStructuredInstruments AutomaticTestEquipment DigitalControlSystems

MAX7624EPE

CMOS 8-Bit Buffered Multiplying DACs

CMOS8-BitBufferedMultiplyingDACs Applications μpControlledGain FunctionGenerators BusStructuredInstruments AutomaticTestEquipment DigitalControlSystems

MAX7624MJE

CMOS 8-Bit Buffered Multiplying DACs

CMOS8-BitBufferedMultiplyingDACs Applications μpControlledGain FunctionGenerators BusStructuredInstruments AutomaticTestEquipment DigitalControlSystems