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.
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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
- AEC-Q100 grade 1 qualified
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STMicroelectronics - LDQ40
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| LDQ40M18RY | Active Product is in volume production. | SOT23-5L | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40M25RY | Active Product is in volume production. | SOT23-5L | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40M33RY | Active Product is in volume production. | SOT23-5L | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40M50RY | Active Product is in volume production. | SOT23-5L | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40MR18Y | NRND Not recommended for New Design. Product is in volume production only to support customers ongoing production. EN | SOT23-5L | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40MR33Y | NRND Not recommended for New Design. Product is in volume production only to support customers ongoing production. EN | SOT23-5L | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40MR50Y | NRND Not recommended for New Design. Product is in volume production only to support customers ongoing production. EN | SOT23-5L | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40MRY | Active Product is in volume production. | SOT23-5L | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40PU18RY | Active Product is in volume production. | DFN 6L 2X2X 0.75 PITCH0.65 AG | Automotive | Ecopack2 (**) | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40PU25RY | Active Product is in volume production. | DFN 6L 2X2X 0.75 PITCH0.65 AG | Automotive | Ecopack2 (**) | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40PU33R | Active Product is in volume production. | VFDFPN 6L 2 X 2 X 0,75 PITCH0.65 | Industrial | Ecopack2 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40PU33RY | Active Product is in volume production. | DFN 6L 2X2X 0.75 PITCH0.65 AG | Automotive | Ecopack2 (**) | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40PU50R | Active Product is in volume production. | VFDFPN 6L 2 X 2 X 0,75 PITCH0.65 | Industrial | Ecopack2 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40PU50RY | Active Product is in volume production. | DFN 6L 2X2X 0.75 PITCH0.65 AG | Automotive | Ecopack2 (**) | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40PUR | Active Product is in volume production. | VFDFPN 6L 2 X 2 X 0,75 PITCH0.65 | Industrial | Ecopack2 | 10 | 2023-11-28T00:00:00.000+01:00 | |
| LDQ40PURY | Active Product is in volume production. | DFN 6L 2X2X 0.75 PITCH0.65 AG | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 |
LDQ40PU33R
Package:
VFDFPN 6L 2 X 2 X 0,75 PITCH0.65Material Declaration**:
LDQ40PU50R
Package:
VFDFPN 6L 2 X 2 X 0,75 PITCH0.65Material 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.
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Sample & Buy
| 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) | Operating temperature (°C) | Operating Temperature (°C) (max) | Grade | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | ||
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| LDQ40PU50R | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40PU18RY | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40MR50Y | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40M25RY | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40MRY | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40PU33R | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40M18RY | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40MR33Y | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40PUR | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40PURY | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40M33RY | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40PU25RY | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40MR18Y | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40PU33RY | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40PU50RY | | | distributors No availability of distributors reported, please contact our sales office |
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| LDQ40M50RY | | | distributors No availability of distributors reported, please contact our sales office |
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LDQ40PU50R Active
LDQ40PU18RY Active
LDQ40MR50Y NRND
LDQ40M25RY Active
LDQ40MRY Active
LDQ40PU33R Active
LDQ40M18RY Active
LDQ40MR33Y NRND
LDQ40PUR Active
LDQ40PURY Active
LDQ40M33RY Active
LDQ40PU25RY Active
LDQ40MR18Y NRND
LDQ40PU33RY Active
LDQ40PU50RY Active
LDQ40M50RY Active
(*) 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