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ET551XX
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General Description
The ET551XX series are CMOS-based low-dropout, low-power linear regulators, offering 800mA with NMOS pass transistor and a separate bias supply voltage (VBIAS) . The device provides very stable, accurate output voltage with low noise, high ripple rejection and low supply current suitable for space constrained, noise sensitive application. The ET551XX series consist of an accurate voltage-reference block, an error amplifier, a thermal-shutdown circuit, and a current limit circuit. The ET551XX series are available in the DFN4(1.2mm×1.2mm) or DFN6(1.2mm×1.2mm) package.
Specification
Sample
Features
- Wide VIN Input Voltage Range: 0.8V to 5.5V
- Wide VBIAS Voltage Range: 2.4V to 5.5V
- Output Voltage Range: 0.8V to 2.1V (Fixed)/0.8V to 3.6V (Externally set)
- Very Low VBIAS Input Current of Typ. 80µA
- Ultra Low Dropout: Typ. 200mV at 800mA, 1.1V Output, 3.3V Bias
- Built-in Over Current Protection and Thermal Shutdown Circuit
- Built-in Auto-discharging Circuit (optional)
- Built-in Under Voltage Lock-out
- Stable with a 2.2μF Ceramic Capacitor
- MSL: Level1
Technical Documentation
| Type | Title | Format | Date |
|---|---|---|---|
| Datasheet | ET551XX Datasheet | 2025-12-07 |
