ET553ADJ
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General Description
The ET553ADJ are CMOS-based low-dropout, low-power linear regulators, offering 500mA with low dropout voltage, high ripple rejection, high output accuracy and low supply current. The ET553ADJ consist of an accurate voltage-reference block, an error amplifier, a voltage-setting resistor net, a PMOSFET pass device, a thermal-shutdown circuit, and a current limit circuit with short protection. The ET553ADJ use a type of outstanding CMOS process to minimize the supply current. A low on-resistance PMOS pass device is equipped for lower dropout voltage. ET553ADJ also possess the EN function to save more energy and extend the battery life.
Features
- Wide Input Voltage Range: 1.9V to 5.5V
- Max Output Current: 500mA
- Output Voltage Range: 1.0V to 3.6V (Externally Resistance Set)
- Very Low IQ: 50µA
- Excellent Load / Line Transient Response
- Built-in Over Current Protection and Thermal Shutdown Circuit
- Built-in Inrush Current Suppression Circuit and Current Limit
- Built-in Auto-discharging Circuit
Technical Documentation
| Type | Title | Format | Date |
|---|---|---|---|
| Datasheet | ET553ADJ Datasheet | 2025-11-07 |
EN

Specification
Sample