Product overview
Description
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.-
All features
- Very low-dropout voltage (0.45 V)
- Very low quiescent current (typ. 50 µA in OFF mode, 500 µA in ON mode)
- Output current up to 500 mA
- Logic-controlled electronic shutdown
- Output voltages of 1.5; 1.8; 2.5; 3.3; 4.7; 5; 6; 8; 8.5; 9; 12 V
- Automotive grade product: 1.8 V, 2.5 V, 3.3 V, 5.0 V, 8.0 V, 8.5 V VOUT in DPAK and PPAK packages
- Internal current and thermal limit
- Only 2.2 µF for stability
- Available in ±1% (AB), ±1.5% (AC) or ±2% (C) selection at 25 °C
- Supply voltage rejection: 80 db (typ.)
- Temperature range: from -40 to 125 °C
Featured Videos
All resources
| Resource title | Latest update |
|---|
Product Specifications (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 26 Jun 2017 |
26 Jun 2017
|
Selection Guides (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 04 Jan 2021 |
04 Jan 2021
|
Brochures (2)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 15 Feb 2019 |
15 Feb 2019
|
|||
| 26 Feb 2020 |
26 Feb 2020
|
EDA Symbols, Footprints and 3D Models
STMicroelectronics - LFXX
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Symbols
Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| LF120ABDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF120CDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF15ABDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF18ABDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF18ABPT-TR |
Active
|
PPACK 5 | Industrial | Ecopack2 |
|
| LF18CDT-TR |
Active
|
DPAK | Industrial | Ecopack2 (**) | |
| LF18CPT-TR |
Active
|
PPACK 5 | Industrial | Ecopack2 |
|
| LF25ABDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF25ABDT-TRY |
Active
|
DPAK | Automotive | Ecopack1 |
|
| LF25CDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF25CPT-TR |
Active
|
PPACK 5 | Industrial | Ecopack2 |
|
| LF33ABDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF33ABV |
Active
|
TO-220 | Industrial | Ecopack2 |
|
| LF33ABV-DG |
Active
|
TO-220 | Industrial | Ecopack2 |
|
| LF33CDT-TR |
Active
|
DPAK | Industrial | Ecopack2 (**) | |
| LF33CDT-TRY |
Active
|
DPAK | Automotive | Ecopack1 (*) | |
| LF33CPT-TR |
Active
|
PPACK 5 | Industrial | Ecopack2 | |
| LF33CV |
Active
|
TO-220 | Industrial | Ecopack2 |
|
| LF33CV-DG |
Active
|
TO-220 | Industrial | Ecopack2 (**) |
|
| LF50ABDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF50ABDT-TRY |
Active
|
DPAK | Automotive | Ecopack1 | |
| LF50ABPT-TR |
Active
|
PPACK 5 | Industrial | Ecopack2 | |
| LF50ABV |
Active
|
TO-220 | Industrial | Ecopack2 |
|
| LF50ABV-DG |
Active
|
TO-220 | Industrial | Ecopack2 |
|
| LF50ACP |
Active
|
TO-220FP | Industrial | Ecopack2 |
|
| LF50CDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF50CDT-TRY |
Active
|
DPAK | Automotive | Ecopack1 | |
| LF50CPT-TR |
Active
|
PPACK 5 | Industrial | Ecopack2 | |
| LF50CV |
Active
|
TO-220 | Industrial | Ecopack2 |
|
| LF50CV-DG |
Active
|
TO-220 | Industrial | Ecopack2 (**) |
|
| LF60ABDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF60CDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF60CV |
Active
|
TO-220 | Industrial | Ecopack2 |
|
| LF80ABDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF80CDT-TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LF80CDT-TRY |
Active
|
DPAK | Automotive | Ecopack1 | |
| LF85CDT-TR |
NRND
|
DPAK | Industrial | Ecopack2 (**) | |
| LF85CDT-TRY |
Active
|
DPAK | Automotive | Ecopack1 |
|
| LF85CPT-TR |
Active
|
PPACK 5 | Industrial | Ecopack2 | |
| LF90CPT-TR |
Active
|
PPACK 5 | Industrial | Ecopack2 |
|
LF18ABPT-TR
Package:
PPACK 5Material Declaration**:
LF18CPT-TR
Package:
PPACK 5Material Declaration**:
LF25ABDT-TRY
Package:
DPAKMaterial Declaration**:
LF25CPT-TR
Package:
PPACK 5Material Declaration**:
LF33ABV
Package:
TO-220Material Declaration**:
LF33ABV-DG
Package:
TO-220Material Declaration**:
LF33CV
Package:
TO-220Material Declaration**:
LF33CV-DG
Package:
TO-220Material Declaration**:
LF50ABV
Package:
TO-220Material Declaration**:
LF50ABV-DG
Package:
TO-220Material Declaration**:
LF50ACP
Package:
TO-220FPMaterial Declaration**:
LF50CV
Package:
TO-220Material Declaration**:
LF50CV-DG
Package:
TO-220Material Declaration**:
LF60CV
Package:
TO-220Material Declaration**:
LF85CDT-TRY
Package:
DPAKMaterial Declaration**:
LF90CPT-TR
Package:
PPACK 5Material Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | Country of Origin | Budgetary Price (US$)*/Qty | More info | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||||
| LF50CDT-TR | 7 distributors |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | -40 | 125 | 5 | 1 | 0.5 | CHINA | 0.306 / 1k | |||
| LF33ABV | 5 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tube | TO-220 | -40 | 125 | 3.3 | 1 | 0.5 | CHINA | 0.424 / 1k | ||
| LF85CDT-TRY | No availability of distributors reported, please contact our sales office | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | -40 | 125 | 8.5 | 1 | 0.5 | CHINA | 0.457 / 1k | ||
| LF50ACP | No availability of distributors reported, please contact our sales office |
Active
|
EAR99 | NEC | Tube | TO-220FP | -40 | 125 | - | 1 | 0.5 | CHINA | ||||
| LF90CPT-TR | 4 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | PPACK 5 | -40 | 125 | 9 | 1 | 0.5 | CHINA | 0.401 / 1k | ||
| LF33CV-DG | 1 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tube | TO-220 | -40 | 125 | 3.3 | 1 | 0.5 | CHINA | 0.481 / 1k | ||
| LF80ABDT-TR | 4 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | -40 | 125 | 8 | 1 | 0.5 | CHINA | 0.382 / 1k | ||
| LF60ABDT-TR | 5 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | -40 | 125 | 6 | 1 | 0.5 | CHINA | 0.382 / 1k | ||
| LF50ABV | 2 distributors |
Active
|
EAR99 | NEC | Tube | TO-220 | -40 | 125 | 5 | 1 | 0.5 | CHINA | 0.43 / 1k | |||
| LF18CDT-TR | 3 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | -40 | 125 | 1.8 | 1 | 0.5 | CHINA | 0.306 / 1k | ||
| LF50CV | 3 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tube | TO-220 | -40 | 125 | 5 | 1 | 0.5 | CHINA | 0.42 / 1k | ||
| LF50ABV-DG | 1 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tube | TO-220 | -40 | 125 | 5 | 1 | 0.5 | CHINA | 0.512 / 1k | ||
| LF18ABDT-TR | 4 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | -40 | 125 | 1.8 | 1 | 0.5 | CHINA | 0.382 / 1k | ||
| LF15ABDT-TR | 5 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | -40 | 125 | 1.5 | 1 | 0.5 | CHINA | 0.382 / 1k | ||
| LF33CV | 6 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tube | TO-220 | -40 | 125 | 3.3 | 1 | 0.5 | CHINA | 0.42 / 1k | ||
| LF50ABPT-TR | 4 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | PPACK 5 | -40 | 125 | 5 | 1 | 0.5 | CHINA | 0.415 / 1k | ||
| LF80CDT-TRY | 2 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | -40 | 125 | 8 | 1 | 0.5 | CHINA | 0.457 / 1k | ||
| LF33CDT-TRY | 3 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | -40 | 125 | 3.3 | 1 | 0.5 | CHINA | 0.464 / 1k | ||
| LF25CPT-TR | 1 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | PPACK 5 | -40 | 125 | 2.5 | 1 | 0.5 | CHINA | 0.401 / 1k | ||
| LF50CV-DG | No availability of distributors reported, please contact our sales office | Buy Direct |
Active
|
EAR99 | NEC | Tube | TO-220 | -40 | 125 | 5 | 1 | 0.5 | CHINA | 0.454 / 1k | ||
| LF33ABV-DG | 3 distributors | |||||||||||||||