LD2985BM33R

LD2985BM33R is a very low drop and low noise voltage regulator with an inhibit function. The ultra-low drop voltage and the low quiescent current make them particularly suitable for low-noise, low-power applications, and in battery-powered systems. In sleep mode, the quiescent current is less than 1µA when INHIBIT pin is pulled low. The shutdown logic control function is available on pin 3 (TTL compatible). This means that when the device is used as a local regulator, it is possible to put a part of the board on standby, decreasing the total power consumption. An external capacitor, CBYP = 10nF, connected between bypass pin and GND reduces the noise to 30µVrms. Typical applications are in cellular phones, palmtop laptop computers, personal digital assistants (PDA), personal stereos, camcorders, and cameras.

• Logic controlled electronic shutdown
• Internal current and thermal limit
• Operating input voltage range from 2.5 to 16V
• Short-circuit current is 400mA typical (RL = 0)
• Dropout voltage is 40mV typ (IO = 10mA)
• Quiescent current is 200µA typ (IO=10mA, on mode), 2µA max (VINH<lt/>0.18V, TJ=-40 to 125°C, off mode)
• Supply voltage rejection is 45dB typ (CBYP = 0.01µF, CO = 10µF, f = 1KHz)
• Output noise voltage is 30µV typ (B = 300Hz to 50KHz, CBYP = 0.01µF, CO = 10µF)
• 3.3V output voltage
• Small SOT23-5L package, -40°C to 125°C temperature range

警告

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