General Description

The FAN2558/9 low voltage CMOS LDOs feature fixed or adjustable output voltage, 180mA load current, delayed power good output (open drain) and 1 output accuracy with excellent line and load regulation. An external bypass capacitor provides ultra-low noise operation.

The FAN2558/9 low voltage LDOs incorporate both thermal shutdown and short circuit protection. Output is stable with a 1µF, low ESR capacitor. The FAN2558/9 family is available in 5-Lead SOT-23, 6-Lead SOT-23 and 2x2mm MLP-6 packages.

Features

• Fixed 1.0V, 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, 3.3V, 3.5V, 3.6V, 3.8V and Adjustable Output

• Power Good Indicator with Open Drain Output

• 180mA Output Current

• 100µA Ground Current

• Cbypassfor Low Noise Operation

• Fast Enable for CDMA Applications

• High Ripple Rejection

• Current Limit

• Thermal Shutdown

• Excellent Line and Load Regulation

• Requires Only 1µF Output Capacitor

• Stable with 0 to 300mΩESR

• TTL-level Compatible Enable Input

• Active Output Discharge

Applications

• Processor Power-up sequencing

• PDAs, Cell Phones

• Portable Electronic Equipment

• PCMCIA Vcc and Vpp regulation/switching