Регуляторы напряжения - Импульсные регуляторы MAX1697REUT+T

Регулируемый DC/DC инвертор напряжения с подкачкой заряда , 1.25В до 5.5В вход, 60мА выход, до 250кГц

The MAX1697REUT+T is a monolithic, CMOS inverting charge pump with shutdown function in 6 pin SOT-23 package. This charge pump voltage inverter accepts an input voltage ranging from 1.25V to 5.5V at TA = +25°C. It has an ultra low 12ohm output resistance which permits loads of up to 60mA with maximum efficiency. The MAX1697R is available with operating frequencies of 12KHz which allows optimization of supply current or external component size. Its small external components and micropower shutdown mode make this device ideal for both battery powered and board level voltage conversion applications. Oscillator control circuitry and four power MOSFET switches are included on-chip. Applications include generating a negative supply from a 5V or 3.3V logic supply to power analogue circuitry. The MAX1697R is used in small LCD panels, GaAsFET bias supplies and battery operated equipment.

• Voltage conversion efficiency of 99.9% at IOUT = 0, TA = +25°C
• Operating temperature range from -40°C to 85°C
• EMI friendly ultra small charge pump
• Supply current is 150µA and shutdown supply current is 0.002µA at TA = +25°C
• Start-up current limited
• Slew rate limited to reduce EMI
• Output resistance is 12ohm at TA = +25°C, IOUT = 60mA
• Wake-up time from shutdown is 1200µs

Области применения

Управление Питанием, Переносные Устройства, Потребительская Электроника