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Datasheet Linear Technology LTC3260IDE

Linear Technology LTC3260IDE

Manufacturer:Linear Technology
Series:LTC3260
Part Number:LTC3260IDE

Low Noise Dual Supply Inverting Charge Pump

Datasheets

  • Download » Datasheet, PDF, 331 Kb, Revision: A
    LTC3260 - Low Noise Dual Supply Inverting Charge Pump
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    LTC3260
    Low Noise Dual Supply
    Inverting Charge Pump
    Features Description VIN Range: 4.5V to 32V
    n Inverting Charge Pump Generates –V
    IN
    n Charge Pump Output Current Up to 100mA
    n Low Noise Negative LDO Post Regulator (ILDO– = 50mA Max)
    n Low Noise Independent Positive LDO Regulator (ILDO+ = 50mA Max)
    n 100µA Quiescent Current in Burst Mode® Operation
    with Both LDO Regulators O 50kHz to 500kHz Programmable Oscillator Frequency
    n Stable with Ceramic Capacitors
    n Short-Circuit/Thermal Protectio Low Profile 3mm × 4mm 14-Pin DFN and Thermally
    Enhanced 16-Pin MSOP Packages The LTC®3260 is a low noise dual polarity output power
    supply that includes an inverting charge pump with both
    positive and negative LDO regulators. The charge pump
    operates over a wide 4.5V to 32V input range and can deliver
    up to 100mA of output current. Each LDO regulator can
    provide up to 50mA of output current. The negative LDO
    post regulator is powered from the charge pump output.
    The LDO output voltages can be adjusted using external
    resistor dividers. n Applications Low Noise Bipolar/Inverting Supplies Industrial/Instrumentation Low Noise Bias
    Generators ...

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Manufacturer's Classification

  • Power Management > Inductorless (Charge Pump) DC/DC Converters > Regulated Inverting Charge Pumps

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LTC3260 Low Noise Dual Supply Inverting Charge Pump FeaTures DescripTion
The LTC3260 is a low noise dual polarity output power supply that includes an inverting charge pump with both positive and negative LDO regulators. The charge pump operates over a wide 4.5V to 32V input range and can deliver up to 100mA of output current. Each LDO regulator can provide up to 50mA of output current. The negative LDO post regulator is powered from the charge pump output. The LDO output voltages can be adjusted using external resistor dividers. The charge pump employs either low quiescent current Burst Mode operation or low noise constant frequency mode. In Burst Mode operation the charge pump VOUT regulates to 0.94 VIN, and the LTC3260 draws only 100A of quiescent current with both LDO regulators on. In constant frequency mode the charge pump produces an output equal to VIN and operates at a fixed 500kHz or to a programmed value between 50kHz to 500kHz using an external resistor. The LTC3260 is available in low profile (0.75mm) 3mm x 4mm 14-pin DFN and thermally enhanced 16-pin MSOP packages.
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n n VIN Range: 4.5V to 32V Inverting Charge Pump Generates VIN Charge Pump Output Current Up to 100mA Low Noise Negative LDO Post Regulator (ILDO = 50mA Max) Low Noise Independent Positive LDO Regulator (ILDO+ = 50mA Max) 100A Quiescent Current in Burst Mode Operation with Both LDO Regulators On 50kHz to 500kHz Programmable Oscillator Frequency S...

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