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Low Noise Bias Generator in 2mm × 2mm DFN

Mar 4 2014 - MILPITAS, CA
  • Linear Technology Corporation announces the LT3048, a step-up DC/DC converter with an integrated LDO output that delivers a low noise, low ripple 15V bias supply. The LT3048-15 delivers up to 40mA of continuous output current at 15V with output ripple and noise less than 500µVPK-PK and 0.1% load regulation. The device operates from an input voltage range of 2.7V to 4.8V, making it suitable for single-cell Li-Ion batteries or 3.3V logic rails. Its constant switching frequency of 2.2MHz enables the use of tiny externals. Combined with a 2mm × 2mm DFN package and an integrated Schottky diode, the LT3048-15 offers a simple, compact solution footprint for low noise biasing applications.

    The LT3048-15’s internal high efficiency switch and 2.2MHz constant frequency operation delivers a low ripple output to the LDO, delivering 15V with ultralow output ripple and noise of less than 500µVPK-PK. Its current-mode control enables fast transient response without the need for complex external compensation. To further enhance system reliability, the LT3048-15 offers short-circuit and thermal protection as well as load disconnect in shutdown.

    The LT3048EDC-15 is available in a 2mm × 2mm DFN-8 package, priced at $1.65 each for 1,000 piece quantities. An industrial temperature (40°C to 125°C) version, the LT3048IDC-15, is priced at $1.82 each for 1,000 piece quantities. Both versions are available from stock. For more information, visit

    Summary of Features: LT3048-15

    • Generates Low Noise Bias Voltage from Single-Cell Li-Ion Battery
    • Output Current: Up to 40mA
    • Low Output Ripple & Noise: <500µVP-P
    • Boost Regulator
    • 2.2MHz Operation
    • 300mA Power Switch
    • Integrated Schottky Diode
    • Low Dropout Linear Regulator
    • Low Noise: <120µVRMS (10Hz to 100kHz)
    • 0.1% Load Regulation
    • Short-Circuit & Thermal Protection
    • Load Disconnect in Shutdown
    • Available in 2mm × 2mm DFN Package

    Tiny Low Noise Boost Generator for Biasing Applications

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  • About Analog Devices
  • Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.
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