Description
The FAN2564 operates from a minimum input of 1.65V and provides outputs as low as 1.2V. Output current is guaranteed to 300mA, making this regulator ideal for digital loads.
The unique low input voltage capability and very low dropout make this device an ideal post regulator to a synchronous buck regulator. In this configuration, accurate low voltage regulation is provided without the inefficiencies typically related to linear regulators.
The enable pin can be used to initiate shutdown mode, where the operating current falls to an extremely low 10nA, typically.
The FAN2564 is designed to be stable with spacesaving ceramic capacitors as small as 0402 case size.
The FAN2564 is available in 4-bump 0.5mm pitch wafer-level chip-scale package (WLCSP) and a 6-lead 2 x 2mm ultra-thin molded leadless package (UMLP).

Features
*Input Voltage 1.65V to 3.6V
*Guaranteed 300mA Output
*High Initial Output Voltage Accuracy: ±1%
*Fixed Output Voltage options from 1.2V to 2.8V
*Very Low Dropout: 100mV at 300mA
*45μA Quiescent Current at No Load
*Low Output Noise of 100μVRMS
*Inrush Current Controlled to Less Than 500mA
*PSRR of 60dB at 1kHz
*100μs Startup Time
*Stable with Ceramic Capacitors
*Thermal and Short-Circuit Protection
*4-bump WLCSP, 0.5mm Pitch
*6-pin 2 x 2mm UMLP

Applications
*Post Regulator
*Cell Phones and Smart Phones
*WLAN, 3G, and 4G Data Cards
*PMP and MP3 Players

FAN2564UC12X, FAN2564UC13X, FAN2564UMP12X, FAN2564UMP13X

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