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FAN2558/FAN2559
180mA Low Voltage CMOS LDO
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 100 A Ground Current Cbypass for Low Noise Operation Fast Enable for CDMA Applications High Ripple Rejection Current Limit Thermal Shutdown Excellent Line and Load Regulation Requires Only 1 F Output Capacitor Stable with 0 to 300m ESR TTL-level Compatible Enable Input Active Output Discharge

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 1 F, low ESR capacitor. The FAN2558/9 family is available in 5-Lead SOT-23, 6-Lead SOT-23 and 2x2mm MLP-6 packages. FAN2558: Fixed Output LDO with Power Good output FAN2558ADJ: Adjustable Output LDO with Power Good output FAN2559: Fixed Output LDO with Power Good output, Low Noise Available standard output voltages are 1.0, 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, 3.3V, 3.5V, 3.6V, and 3.8V. Custom output voltage options are also available.

Applications
Processor Power-up sequencing PDAs, Cell Phones Portable Electronic Equipment PCMCIA Vcc and Vpp regulation/switching

Typical Application
47K RPG VIN 47K RPG VIN C OUT 47K RPG VOUT R1 ADJ R2 PG C OUT VIN

FB SHDN
GND

V OUT

FB SHDN
GND

FB SHDN
GND

V OUT C OUT CBYP C BYP PG

CAP CAPEN
PG

CAP CAPEN

CAP CAPEN

FAN2558

FAN2558ADJ

FAN2559

REV. 1.0.4 3/15/04

FAN2559 Datasheet Fairchild Download PDF

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FAN2559 DATASHEET