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LP8345 - Low Dropout/ Low IQ/ 500mA CMOS Linear Regulator

General Description

The LP8345 low-dropout CMOS linear regulator are available in 5V, 3.3V, 2.5V, 1.8V or adjustable output versions.

Packaged in our 6ld LLP package and 3ld DPAK they can deliver up to 500mA output current.

Key Features

  • a PMOS output transistor which unlike PNP type low dropout regulators requires no base drive current. This allows the device ground current to remain less than 50µA over operating temperature, supply voltage and irrespective of the load current. Features n n n n n n n n n n ± 1.5% Typical VOUT tolerance 210mV Typical Dropout @ 500mA (VO = 5V) Wide Operating Range 2.7V to 10V Internal 500mA PMOS Output Transistor 19µA Typical Quiescent Current Thermal Overload Limiting Foldback Current Limiting.

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Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LP8340 Low Dropout/ Low IQ/ 1.0A CMOS Linear Regulator
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LP8545 High-Efficiency LED Backlight Driver
LP8720 One Step-Down DC/DC and Five Linear Regulators
LP8725 Power Management

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LP8345 Low Dropout, Low IQ, 500mA CMOS Linear Regulator October 2003 LP8345 Low Dropout, Low IQ, 500mA CMOS Linear Regulator General Description The LP8345 low-dropout CMOS linear regulator are available in 5V, 3.3V, 2.5V, 1.8V or adjustable output versions. Packaged in our 6ld LLP package and 3ld DPAK they can deliver up to 500mA output current. Typical dropout voltage @ 500mA is 210mV for the 5.0V version, 270mV for the 3.3V version and 335mV for the 2.5V version. The devices include a zener trimmed bandgap voltage reference, foldback current limiting and thermal overload limiting. The LP8345 features a PMOS output transistor which unlike PNP type low dropout regulators requires no base drive current.