LP3855-ADJ Datasheet | National Semiconductor

Description The LP3855-ADJ fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. The LP3855-ADJ is developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3855-ADJ to operate under extremely low dropout conditions. Dropout Voltage: Ultra low dropout voltage; typically 24m V at 150m A load current and 240m V at 1.5A load current. Ground Pin Current: Typically 4m A at 1.5A load current. Shutdown Mode: Typically 10n A quiescent current when the shutdown pin is pulled low. Adjustable Output Voltage: The output voltage may be programmed via two external resistors. Features n n n n n n n n n Ultra low dropout voltage Stable with selected ceramic capacitors Low ground pin current Load regulation of 0.06% 10n A quiescent current in shutdown mode Guaranteed output current of 1.5A DC Available in TO-263, TO-220 and SOT-223 packages Overtemperature/overcurrent protection - 40˚C to +125˚C junction temperature range Applications n n n n n n n n Microprocessor power supplies GTL, GTL+, BTL, and SSTL bus terminators Power supplies for DSPs SCSI terminator Post regulators High efficiency linear regulators Battery chargers Other battery powered applications Typical Application Circuit - - See Application Hints. © 2006 National Semiconductor Corporation DS200743 .national. Connection Diagrams Top View TO220-5 Package Bent, Staggered Leads Top View TO263-5 Package Top View SOT223-5 Package Pin Description for TO220-5 and TO263-5 Packages Pin # Name 1 2 3 4 5 SD VIN GND VOUT ADJ Shutdown Input Supply Ground Output Voltage Set Output Voltage LP3855-ADJ Function Pin Description for SOT223-5 Package Pin # 1 2 3 4 5 LP3852 Name SD VIN VOUT ERROR GND Function...