RT9193-2.8

The RT9193 series are high-accuracy, low-noise, fast-response LDO linear regulators fabricated using CMOS process technology. These regulators integrate a fixed reference voltage, error correction circuit, current limiting circuit, phase compensation circuit, and a low on-resistance MOSFET, achieving high ripple rejection, low output noise, and fast-response low-dropout performance. The series is compatible with ceramic capacitors, which are smaller than tantalum capacitors, and eliminates the need for a 0.1μF bypass capacitor, further saving board space and reducing cost. The high-accuracy output regulation and fast transient response enable the devices to handle load current fluctuations, making them particularly suitable for handheld devices and RF products. The output can be disabled via the CE pin on the chip, with a typical quiescent current of only 0.1μA in shutdown mode, significantly reducing power consumption.

Applications

• Smartphones/Mobile Phones
• Bluetooth and Other RF Products
• Digital Cameras/Camcorders
• Portable Consumer Devices
• Battery-Powered Equipment

Key features

• High output voltage accuracy: ±2.5%
• Strong load capability: Iout = 300mA at Vin = 4.3V and Vout = 3.3V
• Selectable output voltage: 1.8V~5.0V
• Ultra-low quiescent current (typical = 25μA)
• Ceramic capacitor compatible
• Ultra-low shutdown current (typical = 0.1μA)
• Package types: SOT89-5, SOT23-5
• Good line regulation: typical = 0.2%/V