WL2848E中文资料Low Noise, High PSRR, High Speed, CMOS LDO数据手册OmniVision规格书

描述 Description

The WL2848E series are high accuracy, low noise, high speed, high PSRR, low dropout CMOS Linear regulators with high ripple rejection. The devices offer a new level of cost effective performance in cellular phones, laptops, notebook computers, and other portable devices.

The WL2848E series support the soft-start which prevents input inrush current. The series also have the fold-back maximum output current which depends on the output voltage. The current limit function serves both as a short circuit protection and as an output current limiter.

The WL2848E regulators are available in a standard SOT‑23‑5L package. Standard products are Pb-free and Halogen-free.

Applications– MP3 and MP4 players– Cellphones, radiophones, digital cameras– Bluetooth, wireless handsets– Other portable electronic devices

特性 Features

• Input voltage range:
1.9V~5.5V
• Output voltage range:
1.2V~3.3V
• Output current:
300 mA
• Quiescent current:
typical 58 μA
• Shut-down current:
Dropout voltage:
168 mV at IOUT = 0.3A
• PSRR:
74 dB at 1 kHz, VOUT = 2.8V
• Low output voltage noise:
15×VOUT μVRMS
• VOUT accuracy:
±1.5% at VOUT >2.0V
• Recommend output capacitor:
1 μF
• Thermal overload and short-circuit protection