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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 100ВµA Quiescent Current in Burst ModeВ® 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 Г— 4mm 14-Pin DFN and Thermally
Enhanced 16-Pin MSOP Packages The LTCВ®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 …
