Линейные регуляторы MAX850ESA+

Фиксированный DC/DC преобразователь напряжения с подкачкой заряда , 4.5В до 10В вход, -4.1В/5мА выход

The MAX850ESA+ is a low noise, regulated, negative charge pump power supply for GaAsFET bias in 8 pin NSOIC package. The applied input voltage (VIN) is first inverted to a negative voltage at NEGOUT by a capacitive charge pump. This voltage is then regulated by an internal linear regulator and appears at OUT. The minimum (most negative) output voltage (VOUT) achievable is inverted positive voltage, plus the 1V required by post regulator. It offer both preset (-4.1V) and adjustable (-0.5V to -9V) output voltages. An internal linear regulator reduces output voltage ripple to 2mVp-p. This low noise, inverting, charge pump power supply is ideal for biasing GaAsFETs in cellular telephone transmitter amplifiers. It is also used in negative regulated power supplies, wireless data loggers, continuously adjustable GaAsFET bias and LCD-bias contrast control.

• Input voltage range is 4.5V to 10V
• Operating temperature range from -40°C to +85°C
• Charge pump switching frequency of 100KHz
• Logic level shutdown mode, 1µA max over temperature
• Output current is 5mA
• Maximum supply current is 3mA
• Maximum VOUT load regulation is 8mV
• mA at VFB = 0V
• Input capacitance of 10pF

Области применения

Управление Питанием, Промышленное, Переносные Устройства