NCP551

NCP551, NCV551 Voltage Regulator - CMOS, Low Iq, Low-Dropout 150 mA The NCP551 series of fixed output low dropout linear regulators are designed for handheld communication equipment and portable battery powered applications which require low quiescent. The NCP551 series features an ultra−low quiescent current of 4.0 mA. Each device contains a voltage reference unit, an error amplifier, a PMOS power transistor, resistors for setting output voltage, current limit, and temperature limit protection circuits. The NCP551 has been designed to be used with low cost ceramic capacitors and requires a minimum output capacitor of 0.1 mF. The device is housed in the TSOP−5 surface mount package. Standard voltage versions are 1.4, 1.5, 1.8, 2.5, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.6, 3.8 and 5.0 V. Other voltages are available in 100 mV steps. Features Low Quiescent Current of 4.0 mA Typical Maximum Operating Voltage of 12 V Low Output Voltage Option High Accuracy Output Voltage of 2.0% Industrial Temperature Range of −40°C to 85°C (NCV551, TA = −40°C to +125°C) NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable These Devices are Pb−Free and are RoHS Compliant Typical Applications Battery Powered Instruments Hand−Held Instruments Camcorders and Cameras Vin 1 Thermal Shutdown Driver w/ Current Limit 5 Vout Enable ON 3 OFF GND 2 Figure 1. Representative Block Diagram www.on...