LP8345 Datasheet | National Semiconductor

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 500m A output current. Typical dropout voltage @ 500m A is 210m V for the 5.0V version, 270m V for the 3.3V version and 335m V 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. 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 210m V Typical Dropout @ 500m A (VO = 5V) Wide Operating Range 2.7V to 10V Internal 500m A PMOS Output Transistor 19µA Typical Quiescent Current Thermal Overload Limiting Foldback Current Limiting Zener Trimmed Bandgap Reference Space saving LLP package Temperature Range - LP8345C 0˚C to 125˚C - LP8345I - 40˚C to 125˚C Applications n n n n Hard Disk Drives Notebook puters Battery Powered Electronics Portable Instrumentation Typical Applications Fixed VOUT Adjustable VOUT © 2003 National Semiconductor Corporation DS200648 .national. Ordering Information Package 6-Pin LLP Part Number LP8345CLD-ADJ LP8345CLDX-ADJ LP8345CLD-1.8 LP8345CLDX-1.8 LP8345CLD-2.5 LP8345CLDX-2.5 LP8345CLD-3.3 LP8345CLDX-3.3 LP8345CLD-5.0 LP8345CLDX-5.0 LP8345ILD-ADJ LP8345ILDX-ADJ LP8345ILD-1.8 LP8345ILDX-1.8 LP8345ILD-2.5 LP8345ILDX-2.5 LP8345ILD-3.3 LP8345ILDX-3.3 LP8345ILD-5.0 LP8345ILDX-5.0 3-Pin DPAK LP8345CDT-1.8 LP8345CDTX-1.8 LP8345CDT-2.5 LP8345CDTX-2.5 LP8345CDT-3.3 LP8345CDTX-3.3 LP8345CDT-5.0 LP8345CDTX-5.0 LP8345IDT-1.8 LP8345IDTX-1.8 LP8345IDT-2.5 LP8345IDTX-2.5 LP8345IDTX-3.3 LP8345IDT-3.3 LP8345IDTX-5.0 LP8345IDT-5.0 Package Marking L045B L046B L047B L048B L049B L073B L074B...