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. 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.
The FAN2558 and FAN2559 are low‑voltage CMOS LDO regulators offering fixed or adjustable output voltages, 180 mA load current, and a Power‑Good indicator. They feature low ground current (100 µA), high ripple rejection, thermal shutdown, and an enable pin that reduces quiescent current to less than 1 pA when disabled.
The device is supplied in 5‑lead SOT‑23, 6‑lead SOT‑23, and 2 × 2 mm MLP‑6 packages. Recommended external capacitors include a 1 µF output capacitor with ESR up to 300 mΩ and a 2.2 µF input capacitor. Detailed pin assignments, absolute maximum ratings, and thermal characteristics are provided for designers.
| Maximum Output Current | 180 mA |
|---|---|
| Ground (Quiescent) Current | 100 µA |
| Output Voltage Options (fixed) | 1.0 V, 1.2 V, 1.3 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 3.5 V, 3.6 V, 3.8 V |
| Adjustable Output Voltage Range | 1 V to near Vout |
| Power‑Good Indicator | Open‑drain output |
| Enable Input | TTL‑level compatible |
| Thermal Shutdown Temperature | 150 °C |
| Package Types | 5‑Lead SOT‑23, 6‑Lead SOT‑23, 2 × 2 mm MLP‑6 |
The device can supply up to 180 mA of load current.
A supply voltage between 2.7 V and 5.5 V is recommended.
It includes thermal shutdown that disables the output when the junction temperature exceeds 150 °C and re‑enables it after the temperature drops about 10 °C.
A minimum of 1 µF capacitor with ESR up to 300 mΩ is required for stability.