Specification	LT1085IT#PBF

Current - Output	3 A
Mounting Type	Through Hole
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	TO-220-3
Protection Features	Over Temperature
PSRR	75 dB
Supplier Device Package	TO-220-3
Voltage - Input (Max) [Max]	30 V
Voltage - Output (Min/Fixed)	1.25 V
Voltage Dropout (Max) [Max]	1.5 V

LT1085-Fixed Series

3A, 5A, 7.5A Low Dropout Positive Fixed Regulators

Part	Mounting Type	Package / Case	Current - Output	Number of Regulators	Operating Temperature [Min]	Operating Temperature [Max]	Voltage Dropout (Max) [Max]	Output Configuration	PSRR	Protection Features	Output Type	Supplier Device Package	Voltage - Output (Min/Fixed)	Voltage - Input (Max) [Max]	Output Type	Current - Quiescent (Iq)
Analog Devices LT1085CK	Through Hole	TO-204AA TO-3	3 A	1	0 °C	150 °C
Analog Devices LT1085IM#TRPBF	Surface Mount	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	3 A	1	-40 °C	125 °C	1.5 V	Positive	75 dB	Over Temperature	Adjustable	DDPAK-3	1.25 V	30 V
Analog Devices LT1085CM#TRPBF	Surface Mount	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	3 A	1	0 °C	125 °C	1.5 V	Positive	75 dB	Over Temperature	Adjustable	DDPAK-3	1.25 V	30 V
Analog Devices LT1085CT-12#PBF	Through Hole	TO-220-3	3 A	1	0 °C	125 °C	1.5 V	Positive	60 dB	Over Temperature		TO-220-3	12 V	25 V	1.81 mOhm	10 mA
Analog Devices LT1085CT-5#PBF	Through Hole	TO-220-3	3 A	1	0 °C	125 °C	1.5 V	Positive	68 dB	Over Temperature		TO-220-3	5 V	20 V	1.81 mOhm	10 mA
Analog Devices LT1085IT#PBF	Through Hole	TO-220-3	3 A	1	-40 °C	125 °C	1.5 V	Positive	75 dB	Over Temperature	Adjustable	TO-220-3	1.25 V	30 V
Analog Devices LT1085CM-3.3#TRPBF	Surface Mount	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	3 A	1	0 °C	125 °C	1.5 V	Positive	72 dB	Over Temperature		DDPAK-3	3.3 V	20 V	1.81 mOhm	10 mA
Analog Devices LT1085CT-3.3#PBF	Through Hole	TO-220-3	3 A	1	0 °C	125 °C	1.5 V	Positive	72 dB	Over Temperature		TO-220-3	3.3 V	20 V	1.81 mOhm	10 mA
Analog Devices LT1085IM-3.6#PBF	Surface Mount	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA										DDPAK-3
Analog Devices LT1085CM#PBF	Surface Mount	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	3 A	1	0 °C	125 °C	1.5 V	Positive	75 dB	Over Temperature	Adjustable	DDPAK-3	1.25 V	30 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 14.58
		10	$ 10.38
		25	$ 9.30
		100	$ 8.09
		250	$ 7.51
		500	$ 7.15
		1000	$ 7.00
Newark	Each	1	$ 11.95
		10	$ 9.30
		25	$ 8.42
		50	$ 7.54
		100	$ 7.17
		250	$ 7.00
		500	$ 6.99

Description

General part information

LT1085-Fixed Series

The LT1083 series of positive adjustable regulators are designed to provide 3A, 5A and 7.5A with higher efficiency than currently available devices. All internal circuitry is designed to operate down to 1V input to output differential and the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of 1.5V at maximum output current, decreasing at lower load currents. On-chip trimming adjusts the output voltage to 1%. Current limit is also trimmed, minimizing the stress on both the regulator and power source circuitry under overload conditions.The LT1083 series devices are pin compatible with older three-terminal regulators. A 10µF output capacitor is required on these new devices; however, this is usually included in most regulator designs.Unlike PNP regulators, where up to 10% of the output current is wasted as quiescent current, the LT1083 quiescent current flows into the load, increasing efficiency.ApplicationsHigh Efficiency Linear RegulatorsPost Regulators for Switching SuppliesConstant Current RegulatorsBattery Chargers

Documents

Technical documentation and resources

Technical Data Sheet EN

Datasheet

R006 Reliability Data

Reliability Data