EUP7982
300mA Low-Noise Ultra Low-Dropout
CMOS Regulator with Fault Indicator
FEATURE
DESCRIPTION
The EUP7982 low-noise, low-dropout, linear
regulator operates from a 2.5V to 5.5V input and is
guaranteed to deliver 300mA.
The EUP7982 is stable with small 2.2µF ceramic
capacitor. Its performance suits battery powered
applications because of its shutdown mode (60 nA
typ), low quiescent current (110µA typ), and LDO
voltage (140mV typ). The low dropout voltage
allows for more utilization of a battery’s available
energy by operating closer to its end-of-life voltage.
An output fault-detection circuit indicates loss of
regulation.
The EUP7982 is available in MSOP package with
1.8V, 2.5v, 2.8V, 3V, 3.3V, and adjustable versions.
2.5V to 5.5V Input Range
300mA Guaranteed Output Current
60dB PSRR at 1kHz
50µV RMS Output Voltage Noise (10Hz to
100kHz)
140mV Dropout at 300mA
Low 110µA No-Load Supply Current
≤
1µA Shutdown Current
Fast Start-up Time
Stable With 2.2µF Ceramic Output Capacitors
Thermal Shutdown and Short-Circuit Protection
Fault Indicator
RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
Wireless Handsets
DSP Core Power
Battery Powered Electronics
Portable Information Appliances
Block Diagram
Figure1.
DS7982 Ver 1.4 May.2005
1
EUTECH [ EUTECH MICROELECTRONICS INC ]
