LD3986中文资料意法半导体数据手册PDF规格书

DESCRIPTION

The LD3986 provides up to 150mA at each output, from 2.5V to 6V input voltage. The ultra low drop-voltage, low quiescent current and low noise make it suitable for low power applications and in battery powered systems. Regulator ground current increases only slightly in dropout, further prolonging the battery life. Power supply rejection is 50 dB at 1KHz and 40 dB at 10KHz. High power supply rejection is maintained down to low input voltage levels common to battery operated circuits.

■ INPUT VOLTAGE FROM 2.5V TO 6V

■ STABLE WITH LOW ESR CERAMIC CAPACITORS

■ ULTRA LOW DROPOUT VOLTAGE (60mV TYP. AT 150mA LOAD, 0.4mV TYP. AT 1mA LOAD)

■ VERY LOW QUIESCENT CURRENT (155µA TYP. AT NO LOAD, 290µA TYP. AT 150mA LOAD; MAX 2µA IN OFF MODE)

■ GUARANTEED OUTPUT CURRENT UP TO 150mA FOR BOTH OUTPUTS

■ DUAL OUTPUT VOLTAGES

■ FAST TURN-ON TIME: TYP. 120µs (CO=1µF, CBYP=10nF AND IO=1mA)

■ LOGIC-CONTROLLED ELECTRONIC SHUTDOWN

■ INTERNAL CURRENT AND THERMAL LIMIT

■ OUTPUT LOW NOISE VOLTAGE 30µVRMS OVER 10Hz to 100KHz

■ S.V.R. OF 50dB AT 1KHz, 40dB AT 10KHz

■ TEMPERATURE RANGE: -40°C TO 125°C