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LTC3260EMSE DataSheet

LTC3260EMSE DataSheet

Part No.
LTC3260EMSE
Part Marking
3260
Temperature
–40°C to 125°C
Package
16-Lead Plastic MSOP
File Size
1103 KB
Page
18 Pages
Manufacturer
Linear Technology
Views
0
Upload Time
2022-07-14 15:38:05
Update Time
2022-07-14
Description
IC REG CHARGE PUMP INV DL 16MSOP
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LTC3260EMSE Features

■ 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)
■ 100μA Quiescent Current in Burst Mode® Operation with Both LDO Regulators On
■ 50kHz to 500kHz Programmable Oscillator Frequency
■ Stable with Ceramic Capacitors
■ Short-Circuit/Thermal Protection
■ Low Profile 3mm × 4mm 14-Pin DFN and Thermally Enhanced 16-Pin MSOP Packages
■ AEC-Q100 Qualified for Automotive Applications

LTC3260EMSE Applications

■ Low Noise Bipolar/Inverting Supplies
■ Industrial/Instrumentation Low Noise Bias Generators
■ Portable Medical Equipment
■ Portable Instruments

LTC3260EMSE Description

The LTC3260EMSE 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 LTC3260EMSE draws only 100μA 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.

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