AP7313-33SRG-7

The AP7313-33SRG-7 is a linear voltage regulator. It is a monolithic integrated low dropout voltage regulator (LDO) with low quiescent current. It is specifically designed for portable applications with strict space and power budget. The external components are minimal and simple to use, making the AP7313-33SRG-7 ideal choice for embedded applications that need smooth, low-noise power supply.

Application Fields

The AP7313-33SRG-7 is suitable for personal communication systems, computer peripherals, consumer electronics, and battery-powered systems such as digital cameras and PDAs. Portable instruments, medical devices, and home appliances can also benefit from its unique features.

Features

• Low Dropout Voltage: 500mV at IOUT=100mA
• Average Output Current of 600mA
• Input voltage range of 1.8V to 5.5V
• Low Quiescent Current: 60μA
• High Ripple Rejection Ratio: 70dB (typical)
• Output Voltage Accuracy: ±1.5% (typical)
• Stable with Low ESR Ceramic Output Capacitor
• Output Voltage Ranging: 1.3V to 3.3V
• Built-in Over-Current, Over-Voltage, and Thermal Protection Circuits

Working Principle

The AP7313-33SRG-7 is a linear voltage regulator, featuring an internal P-channel power MOSFET integrated to regulate output current. The chip includes an over-current protection circuit which detects an output short-circuit and shuts down the output by stopping switching. In the case of overloading, current limiting is initiated to limit the output current. Also, the chip includes a thermal protection circuit which limits the input current and shuts down the output when the temperature exceeds the set limit.

The AP7313-33SRG-7 is designed with a low dropout voltage of 500mV at IOUT=100mA, enabling it to maintain a stable output voltage with low heat dissipation. This feature makes it an ideal choice for portable and battery-operated devices that require an efficient solution in a small form factor.