NCV551SN33T1G Integrated Circuits (ICs)

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1. Describe

The NCP551 series of fixed output low dropout linear regulators are Designed for Handheld Communication Devices and Portable Batteries Power supply applications that require low static. NCP551 The series features an ultra-low quiescent current of 4.0 A. per device Contains a voltage reference unit, an error amplifier, a PMOS power supply transistors, resistors for setting the output voltage, current limit, and temperature limit protection circuit. NCP551 is designed for use with low cost ceramics capacitor and requires a minimum output capacitor of 0.1 F. The device is available in a TSOP-5 surface mount package.

2. Features

    1. Low Quiescent Current of 4.0 A Typical

    2. Maximum Operating Voltage of 12 V

    3. Low Output Voltage Option

    4. High Accuracy Output Voltage of 2.0%

    5. Industrial Temperature Range of −40°C to 85°C (NCV551, TA = −40°C to +125°C)

    6. NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable

    7. These Devices are Pb−Free and are RoHS Compliant

3. Applications

    1. Battery Powered Instruments

    2. Hand−Held Instruments

    3. Camcorders and Cameras

4. Pin configuration

5. Pin Description

6. APPLICATIONS INFORMATION

    1. Input Decoupling

        A 0.1 F capacitor either ceramic or tantalum is recommended and should be connected close to the NCP551 package. Higher values and lower ESR will improve the overall line transient response.

    2. Output Decoupling

        The NCP551 is a stable Regulator and does not require any specific Equivalent Series Resistance (ESR) or a minimum output current. Capacitors exhibiting ESRs ranging from a few m up to 3.0  can thus safely be used. The minimum decoupling value is 0.1 F and can be augmented to fulfill stringent load transient requirements. The regulator accepts ceramic chip capacitors as well as tantalum devices. Larger values improve noise rejection and load regulation transient response.

    3. Enable Operation

        The enable pin will turn on or off the regulator. These limits of threshold are covered in the electrical specification section of this data sheet. If the enable is not used then the pin should be connected to Vin.