Specification	LD1085D2T33R

Current - Output	3 A
Current - Quiescent (Iq)	10 mA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Configuration	Positive
Package / Case	D2PAK (2 Leads + Tab), TO-263-3, TO-263AB
Protection Features	Over Temperature, Over Current
PSRR	72 dB
Supplier Device Package	D2PAK
Voltage - Input (Max) [Max]	30 V
Voltage - Output (Min/Fixed)	3.3 V
Voltage Dropout (Max)	1.5 V

LD1085 Series

Part	Voltage Dropout (Max)	Current - Quiescent (Iq)	Mounting Type	Output Configuration	Supplier Device Package	PSRR	Operating Temperature [Max]	Operating Temperature [Min]	Protection Features	Number of Regulators	Package / Case	Voltage - Output (Min/Fixed)	Current - Output	Voltage - Input (Max) [Max]	Output Type
STMicroelectronics LD1085D2T18R	1.5 V	10 mA	Surface Mount	Positive	D2PAK	72 dB	125 °C	-40 C	Over Current Over Temperature	1	D2PAK (2 Leads + Tab) TO-263-3 TO-263AB	1.8 V	3 A	30 V
STMicroelectronics LD1085D2M18R	1.5 V	10 mA	Surface Mount	Positive	D2PAK-3	72 dB	125 °C	-40 C	Over Current Over Temperature	1	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	1.8 V	3 A	30 V
STMicroelectronics LD1085V	1.5 V	10 mA	Through Hole	Positive	TO-220	72 dB	125 °C	-40 C	Over Current Over Temperature	1	TO-220-3	1.25 V	3 A	30 V	Adjustable
STMicroelectronics LD1085D2T33R	1.5 V	10 mA	Surface Mount	Positive	D2PAK	72 dB	125 °C	-40 C	Over Current Over Temperature	1	D2PAK (2 Leads + Tab) TO-263-3 TO-263AB	3.3 V	3 A	30 V
STMicroelectronics LD1085P	1.5 V	10 mA	Through Hole	Positive	TO-220FP	72 dB	125 °C	-40 C	Over Current Over Temperature	1	TO-220-3 Full Pack	1.25 V	3 A	30 V	Adjustable
STMicroelectronics LD1085D2M-R	1.5 V	10 mA	Surface Mount	Positive	D2PAK-3	72 dB	125 °C	-40 C	Over Current Over Temperature	1	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	1.25 V	3 A	30 V	Adjustable
STMicroelectronics LD1085V18	1.5 V	10 mA	Through Hole	Positive	TO-220	72 dB	125 °C	-40 C	Over Current Over Temperature	1	TO-220-3	1.8 V	3 A	30 V
STMicroelectronics LD1085D2T12R	1.5 V	10 mA	Surface Mount	Positive	D2PAK	66 dB	125 °C	-40 C	Over Current Over Temperature	1	D2PAK (2 Leads + Tab) TO-263-3 TO-263AB	12 V	3 A	30 V
STMicroelectronics LD1085D2M50	1.5 V	10 mA	Surface Mount	Positive	D2PAK-3	72 dB	125 °C	-40 C	Over Current Over Temperature	1	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	5 V	3 A	30 V
STMicroelectronics LD1085V50	1.5 V	10 mA	Through Hole	Positive	TO-220	72 dB	125 °C	-40 C	Over Current Over Temperature	1	TO-220-3	5 V	3 A	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	N/A	1900	$ 1.78
Mouser	N/A	1	$ 1.72
		10	$ 1.26
		25	$ 1.15
		100	$ 1.03
		250	$ 0.96
		500	$ 0.92
		1000	$ 0.88
		2000	$ 0.85
		5000	$ 0.81
Newark	Each (Supplied on Cut Tape)	1	$ 1.94
		10	$ 1.48
		25	$ 1.37
		50	$ 1.30
		100	$ 1.24
		250	$ 1.18
		500	$ 1.15

Description

General part information

LD1085 Series

The LD1085 is a low drop voltage regulator able to provide up to 3 A of output current. Dropout is guaranteed at a maximum of 1.2 V at the maximum output current, decreasing at lower loads. The LD1085 is pin-to-pin compatible with the older 3-terminal adjustable regulators, but offers better performance in terms of drop and output tolerance.

Unlike PNP regulators, where a part of the output current is wasted as quiescent current, the LD1085 quiescent current flows into the load, thus increase efficiency. Only a 10 μF minimum capacitor is need for stability.

The device is supplied in TO-220, TO-220FP, D²PAK and D²PAK/A packages. On-chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 1% at 25 °C.

Documents

Technical documentation and resources

Technical Data Sheet EN

Datasheet

Product Change Notice EN

Datasheet