The YB1231 is a series of ultra-low-noise, low dropout (LDO) linear regulators with 2.0% output voltage accuracy. The YB1231 regulators achieve a low 440mV dropout at 600mA load current of 4.5V output and are available in voltages ranging from 3.2V to 4.5V with 0.1 V per step (custom voltage is considerable at request).
The YB1231 regulators are optimized to work with low-ESR and low cost ceramic capacitors, reducing the amount of board space critical in hand-held devices. The YB1231 requires only 2.2 μF output capacitor for stability with any load and consumes less than 1μA in shutdown mode.
Built-in thermal shutdown and short-circuit protect offer secure protection against fault operation. The YB1231 regulators are available in SOT-23 / SOT-25 / SOT-89 packages.
■ 2.0% Accuracy Output Voltage
■ Output Voltage range 3.2V~4.5V
■ Low-Noise Low-Drop-Out
■ Stable with 2.2μF Ceramic Capacitor for Any Load
■ Typical Output Current : 600 mA
■ Low Quiescent Current : ~100μA
■ 440mV Dropout at 600mA Load (4.5V)
■ Only Need Input and Output Capacitors
■ Power Saving Shutdown Mode (<1μA)
■ Thermal Protection Shutdown
■ Built-In Internal Soft-Start
■ Output Short-circuit Current Limit Protection
■ Green package (RoHS) available
■ PDA, Palmtops and Notebook Computers
■ DSC, Handset Camera Modules
■ PCMCIA Cards, PC Cameras
■ USB Based Portable Devices (MP3, PMP)
■ GSM/GPRS/3G RF Transceiver Modules
■ Wireless LANs
■ Bluetooth Portable Radios