EUP7559 is a dual low dropout linear regulator capable of sourcing 300mA current per regulator. The EUP7559 is stable with small ceramic output capacitors. The performance of EUP7559 is optimized for battery power systems to deliver low noise, low dropout voltage, low quiescent current and excellent line and load transient response. The EUP7559 is available in fixed output voltages in the 8-pin 3mm×3mm TDFN leadless package.
The EUP7559 is a dual low‑dropout (LDO) linear regulator designed for battery‑powered systems. Each regulator can source up to 300 mA, features a low dropout of 55 mV at 100 mA, ultra‑low quiescent current (115 µA per LDO), and high power‑supply rejection (70 dB at 1 kHz). Independent enable pins allow separate shutdown of each LDO, reducing standby current to 10 nA when both are disabled.
Typical applications include cellular phones, PDAs, wireless LAN cards, and hand‑held instruments. The device is supplied in a lead‑free 3 mm × 3 mm TDFN‑8 package and is RoHS compliant. External ceramic capacitors (2.2 µF to 22 µF, X7R recommended) are required for stability and noise reduction.
| Input Voltage Range | 2.5 V to 6 V |
|---|---|
| Output Current per LDO | 300 mA |
| Low Dropout Voltage | 55 mV @ 100 mA |
| Quiescent Current | 115 µA per LDO |
| Power‑Supply Rejection Ratio (PSRR) | 70 dB at 1 kHz |
| Package | 3 mm × 3 mm TDFN‑8 (leadless) |
| Shutdown Current (both LDOs off) | 10 nA |
Each LDO can source up to 300 mA continuous current.
The device contains two independent low‑dropout regulators.
It is offered in a lead‑free 3 mm × 3 mm TDFN‑8 (leadless) package.
A logic‑low on ENA or ENB shuts down the corresponding regulator; if both are low, the device enters a 10 nA standby mode.