EUP7987
300mA Low-Noise Ultra Low-Dropout
CMOS Regulator
DESCRIPTION
The EUP7987 low-noise, low-dropout, linear
regulator operates from a 2.5V to 5.5V input and is
guaranteed to deliver 300mA.
The EUP7987 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.
The EUP7987 is available in 1.8V, 2.5v, 2.8V, 3V,
3.3V, and adjustable versions.
FEATURE
300mA Guaranteed Output Current (500mA for
Pulsed Loads)
60dB PSRR at 1kHz
50µ V
RMS
Output Voltage Noise
140mV Dropout at 300mA Load
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
SOT23-5 and SOT23-6 Package
RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
Wireless Handsets
DSP Core Power
Battery Powered Electronics
Portable Information Appliances
Block Diagram
Figure1.
DS7987 Ver 1.5 May .2005
1
EUTECH [ EUTECH MICROELECTRONICS INC ]
