LDO regulator, adjustable, 3.3 ... 12.12 V, TO-220

1.5A positive regulators with low dropout
Adjustable and fixed 2.85V, 3.3V, 3.6V, 5V, 12V

Description
The LT ®1086 is designed for an output current of up to 1.5A. All internal circuitry is designed to operate down to 1V input-output differential, and the dropout voltage is fully specified as a function of load current. The dropout voltage is guaranteed in several operating points up to a maximum of 1.5V at maximum output current. The dropout voltage decreases at lower load currents. The reference/output voltage is set to 1% by on-chip trimming. The current limit is also trimmed, minimizing stress on both the regulator and the current source circuit under overload conditions. The LT1086 is pin compatible with older 3-terminal adjustable regulators. An output capacitor of at least 10 µF is required for these devices. The LT1086 offers excellent specifications for line and load regulation, and ripple rejection is greater than 75dB even at a maximum load current of 1.5A. The LT1086 has a floating architecture with a composite NPN output stage. All of the quiescent current and the drive current for the output stage flow to the load to increase efficiency. The LT1086 is available in a 3-pin TO-220 package and a space-saving surface mount 3-pin DD package.

Features
- 3-terminal adjustable or fixed 2.85V, 3.3V, 3.6V, 5V, 12V
- Output current of 1.5A (0.5A for LT1086H)
- Works down to 1V dropout
- Guaranteed dropout voltage at multiple current levels
- Line regulation: 0.015%
- Load regulation: 0.1%
- 100% thermal limit function test
- ripple rejection >75dB
- Available in 3-pin TO-220 and 3-pin DD housings

Applications
- Active SCSI-2 terminator
- Linear regulators with high efficiency
- Post regulators for switching power supplies
- Constant current regulators
- Battery chargers
- Supply of the microprocessor