LF33CV

Active

STMicroelectronics

FIXED LDO VOLTAGE REGULATOR, 3V TO 16V, 400MV DROPOUT, 3.3VOUT, 0.5AOUT, TO-220-3 ROHS COMPLIANT: YES

Deep-Dive with AI

Search across all available documentation for this part.

Documents +9

LF33CV

Active

STMicroelectronics

FIXED LDO VOLTAGE REGULATOR, 3V TO 16V, 400MV DROPOUT, 3.3VOUT, 0.5AOUT, TO-220-3 ROHS COMPLIANT: YES

Deep-Dive with AI

Documents +9

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LF33CV

Current - Output	500 mA
Current - Quiescent (Iq)	1 mA
Current - Supply (Max) [Max]	12 mA
Mounting Type	Through Hole
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	TO-220-3
Protection Features	Over Current, Over Temperature
PSRR [Max]	65 dB
PSRR [Min]	80 dB
Supplier Device Package	TO-220
Voltage - Input (Max) [Max]	16 V
Voltage - Output (Min/Fixed)	3.3 V
Voltage Dropout (Max) [Max]	0.7 V

LFXX Series

Very low drop voltage regulator with inhibit

Part	Mounting Type	Number of Regulators	Package / Case	Output Configuration	Current - Quiescent (Iq)	Output Type	Voltage - Input (Max) [Max]	Current - Supply (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Current - Output	Protection Features	Voltage Dropout (Max) [Max]	Voltage - Output (Min/Fixed)	PSRR [Max]	PSRR [Min]	Grade	Qualification	Control Features
STMicroelectronics LF50CDT-TR	Surface Mount	1	DPAK (2 Leads + Tab) SC-63 TO-252-3	Positive	1 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	DPAK	500 mA	Over Current Over Temperature	0.7 V	5 V	60 dB	76 dB
STMicroelectronics LF18CDT-TR	Surface Mount	1	DPAK (2 Leads + Tab) SC-63 TO-252-3	Positive	1 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	DPAK	500 mA	Over Current Over Temperature	0.7 V	1.8 V	82 dB	60 db
STMicroelectronics LF50CPT-TRY	Surface Mount	1	DPAK (4 Leads + Tab) TO-252-5 TO-252AD	Positive	2 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	PPAK	500 mA	Over Current Over Temperature	1.3 V	5 V	60 dB	76 dB	Automotive	AEC-Q100	Enable
STMicroelectronics LF50CPT-TR	Surface Mount	1	DPAK (4 Leads + Tab) TO-252-5 TO-252AD	Positive	1 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	PPAK	500 mA	Over Current Over Temperature	0.7 V	5 V	60 dB	76 dB			Enable
STMicroelectronics LF33CV	Through Hole	1	TO-220-3	Positive	1 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	TO-220	500 mA	Over Current Over Temperature	0.7 V	3.3 V	65 dB	80 dB
STMicroelectronics LF33CV-DG	Through Hole	1	TO-220-3	Positive	1 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	TO-220	500 mA	Over Current Over Temperature	0.7 V	3.3 V	65 dB	80 dB
STMicroelectronics LF33ABPT	Surface Mount	1	DPAK (4 Leads + Tab) TO-252-5 TO-252AD	Positive	1 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	PPAK	500 mA	Over Current Over Temperature	0.7 V	3.3 V	65 dB	80 dB			Enable
STMicroelectronics LF50ABV	Through Hole	1	TO-220-3	Positive	1 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	TO-220	500 mA	Over Current Over Temperature	0.7 V	5 V	60 dB	76 dB
STMicroelectronics LF50ABDT-TR	Surface Mount	1	DPAK (2 Leads + Tab) SC-63 TO-252-3	Positive	1 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	DPAK	500 mA	Over Current Over Temperature	0.7 V	5 V	60 dB	76 dB
STMicroelectronics LF33ABDT	Surface Mount	1	DPAK (2 Leads + Tab) SC-63 TO-252-3	Positive	1 mA	1.81 mOhm	16 V	12 mA	125 °C	-40 °C	DPAK	500 mA	Over Current Over Temperature	0.7 V	3.3 V	65 dB	80 dB

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	$ 1.63
		10	$ 1.46
		50	$ 1.39
		100	$ 1.14
		250	$ 1.06
		500	$ 0.94
		1000	$ 0.74
		2500	$ 0.69
		5000	$ 0.66
Newark	Each	1	$ 1.45
		10	$ 0.95
		100	$ 0.85
		500	$ 0.74
		1000	$ 0.65
		2500	$ 0.54
		10000	$ 0.51

Description

General part information

LFXX Series

The LFXX is a very low drop regulator available in TO-220, TO-220FP, DPAK and PPAK packages and in a wide range of output voltages. The low drop voltage (0.45 V) and low quiescent current make it particularly suitable for low-noise, low-power applications and especially in battery-powered systems. In the 5 pin configuration (PPAK) a shutdown logic control function is available (pin 2, TTL compatible). This means that when the device is used as a local regulator, a part of the board can be put in standby, decreasing the total power consumption. In the three terminal configuration, the device has the same electrical performance, but it is fixed in ON state. It requires a capacitor of only 2.2 µF for stability, saving board space and costs. The LFXX is available as automotive grade in DPAK and PPAK packages, for the options of output voltages whose commercial part numbers are shown in the order codes. These devices are qualified according to the specification AEC-Q100 of the automotive market, in the temperature range -40 °C to 125 °C, and the statistical tests PAT, SYL, SBL are performed.

Documents

Technical documentation and resources

Flyers

Brochures

Flyers

DS0519

Product Specifications

Presentations

Brochures

Datasheet

Technical Data Sheet EN

Datasheet

Product Change Notice EN

Datasheet