Регуляторы напряжения - Импульсные регуляторы MAX1697TEUT+T

Регулируемый DC/DC инвертор напряжения с подкачкой заряда , 1.4В - 5.5В вход, -5.5В - -1.4В/60мА

The MAX1697TEUT+T from Maxim Integrated Products 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 1.4V to 5.5V at TA = +25°C. It has an ultralow 12ohm output resistance which permits loads of up to 60mA with maximum efficiency. The MAX1697T is available with operating frequencies of 125KHz 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 MAX1697T is also used in small LCD panels, GaAsFET bias supplies, handy terminals, PDAs 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
• Quiescent supply current is 950µA and shutdown supply current is 0.002µA at TA = +25°C
• Start-up current limited
• Slew rate limited to reduce EMI
• Output current is 60mA, output resistance is 12ohm at TA = +25°C, IOUT = 60mA
• Wake-up time from shutdown is 100µs at TA = 0°C to +85°C
• Oscillator frequency is 125KHz at TA = +25°C

Области применения

Управление Питанием, Переносные Устройства, Потребительская Электроника