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The EUP7913/A is an efficient CMOS low dropout (LDO) voltage regulator optimized for ultra-low-noise applications. It offers high output accuracy, extremely low dropout voltage, low ground current and fast start-up time. The EUP7913/A provides a very low noise output without a bypass capacitor, ideal for RF applications where a clean supply voltage source is

required. Specifically designed for handheld and battery-powered devices, the EUP7913/A provides a TTL-logic-compatible enable pin. When the EUP7913/A is disabled, power consumption drops nearly to zero. Key features include current limit,

thermal shutdown and faster transient response.

The EUP7913/A works with low-ESR ceramic capacitors. Available in the SOT23-3 or SOT23-5 space saving package which reduces the amount of board space necessary for power applications. The EUP7913/A offers wide fixed output voltage versions.

• • 2.5V to 5.5V Input Voltage Range
• • 30µV(rms) Output Noise
• • 200mV Dropout @ 300mA
• • 70dB PSRR at 1kHz No Bypass Capacitor
• • Low 30µA Ground Current
• • Guaranteed 300mA Output Current
• • Stable with a 1µF Ceramic Output Capacitor when VOUT≥1.5V, or 2.2µF when VOUT<1.5V
• • Excellent Load/Line Transient
• • Thermal Shutdown and Current Limit Protection
• • Available 1.2V to 3.6V Fixed Output Voltages(50mV increments)
• • Space-Saving SOT23-3 & SOT23-5 Package
• • RoHS Compliant and 100% Lead (Pb)-Free

• • Cellular Phones
• • Camera Modules
• • PDA and Palmtop Computers
• • Consumer/Personal Electronics