BL1085 is a series of low dropout three
terminal regulators with a typical dropout
voltage of 1.4V at 3A load current.
Other than fixed voltage versions (1.8V, 2.5V,
3.3V, 5.0V), BL1085 has an adjustable
voltage version, with which desired voltage
can be achieved by setting the values of two
external resistors of the application circuitry.
BL1085 offers thermal shut down and current
limit functions to assure the stability of chip
and power system.
BL1085 series is available in standard
packages of TO-263-2L, TO-263-3L, TO-220
3A Bipolar Linear Regulator
Fixed and adjustable versions.
Maximum output current : 3A
Maximum input voltage: 15V
Line regulation: 0.2％ (Typical)
Load regulation: 0.2％ (Typical)
On-Chip Thermal Shutdown
Operation environment Temperature: -10℃
Power Management for Computer Mother
Board, Graphic Card
Post Regulators for Switching Supplies
Fig 1. BL1085 fixed version Application circuit
NOTE: Input capacitor (Cin=10uF) and Output
capacitor (Cout=22uF) are recommended in all
application circuit. Tantalum capacitor is
0.5 1.5 2.5 3.5 4.5
Fig 2. Dropout Voltage VS. Output Current