LP3875 1.5A Electric Circuit Board IC Fast Ultra Low Dropout Linear
Regulators
LP3875-ADJ 1.5A Fast Ultra Low Dropout Linear Regulators
General Description
The LP3875-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 LP3875-ADJ is developed on a CMOS process which allows low
quiescent current operation independent of output load current.
This CMOS process also allows the LP3875-ADJ to operate under
extremely low dropout conditions. Dropout Voltage: Ultra low
dropout voltage; typically 38mV at 150mA load current and 380mV at
1.5A load current. Ground Pin Current: Typically 6mA at 1.5A load
current. Shutdown Mode: Typically 10nA quiescent current when the
shutdown pin is pulled low. Adjustable Output Voltage: The output
voltage may be programmed via two external resistors.
Features
n Ultra low dropout voltage
n Low ground pin current
n Load regulation of 0.06%
n 10nA quiescent current in shutdown mode
n Guaranteed output current of 1.5A DC
n Available in TO-263, TO-220 and SOT-223 packages
n Minimum output capacitor requirements
n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range
Applications
n Microprocessor power supplies n GTL, GTL+, BTL, and SSTL bus
terminators
n Power supplies for DSPs n SCSI terminator
n Post regulators
n High efficiency linear regulators
n Battery chargers
n Other battery powered applications
Pin Description for TO220-5 and TO263-5 Package
| PIN# | Name | Function |
| 1 | SD | Shutdown |
| 2 | VIN | Input Supply |
| 3 | GND | Ground |
| 4 | VOUT | Output Voltage |
| 5 | ADJ | Set Output Voltage |
