Product overview

Description

The LDQ40 is a high accuracy voltage regulator, which provides 250 mA of current.

It is available in an SOT23 5L, DFN 2x2 6L package, to maximize space saving.

The device is stabilized with a small ceramic capacitor on the output. The low drop, low quiescent current, and short-circuit protection make the LDQ40 suitable for low-power battery-operated applications.

An enable logic control function puts the LDQ40 in shutdown mode allowing a total current consumption lower than 0.3 µA. Thermal protection is also included.

  • All features

    • AEC-Q100 grade 1 qualified
      • Operating temperature range: -40 °C < TJ < 150 °C
    • Input voltage from 3.3 V to 40 V
    • Dropout voltage (500 mV typ. at 250 mA load)
    • Low ground current (2 μA typ. at no load)
    • Output voltage: 1.8 V, 2.5 V, 3.3 V, and 5.0 V and ADJ from 1.2 V to 12 V
    • Output voltage tolerance: ±1.5% overtemperature, ±0.5% at 25 °C
    • 250 mA guaranteed output current
    • Power Good for fixed versions
    • Logic-controlled electronic shutdown
    • Internal current limit
    • Short-circuit protection
    • Thermal shutdown
    • Output active discharge function
    • Package options:
      • SOT23-5L, DFN 2x2 6L for industrial applications
      • DFN 2x2 6L WF for automotive grade

EDA Symbols, Footprints and 3D Models

STMicroelectronics - LDQ40

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.

Please select one model supplier :

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LDQ40PUR
Active
VFDFPN 6L 2 X 2 X 0,75 PITCH0.65 Industrial Ecopack2
LDQ40PURY
Active
DFN 6L 2X2X 0.75 PITCH0.65 AG Automotive Ecopack2

LDQ40PUR

Package:

VFDFPN 6L 2 X 2 X 0,75 PITCH0.65

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFDFPN 6L 2 X 2 X 0,75 PITCH0.65

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDQ40PURY

Package:

DFN 6L 2X2X 0.75 PITCH0.65 AG

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN 6L 2X2X 0.75 PITCH0.65 AG

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) 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

Swipe or click the button to explore more details Don't show this again
Part Number
Marketing Status
Budgetary Price (US$)*/Qty
Order from ST
Order from distributors
Package
Packing Type
RoHS
Country of Origin
ECCN (US)
ECCN (EU)
Temperature (°C)
Grade
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
min
max
LDQ40PUR
Available at distributors

Distributor availability of LDQ40PUR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office

LDQ40PURY
Available at distributors

Distributor availability of LDQ40PURY

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office

LDQ40PUR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LDQ40PUR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

-

Output Tolerance (typ):

0.5

Output Current (A) (nom):

0.25

LDQ40PURY Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LDQ40PURY

Operating Temperature (°C)

Min:

Max:

Grade:

Automotive

Output Voltage (V) (nom):

-

Output Tolerance (typ):

0.5

Output Current (A) (nom):

0.25

Distributor Name

Distributor reported inventory date:

Swipe or click the button to explore more details Don't show this again

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors