Product overview
Key Benefits
Flexible output
Adjustable output with high accuracy
Wide input tolerance
It works through voltage spikes and cold-crank events
Low power consumption
Very low quiescent current extends battery life
Description
The LDQ44 is a high accuracy voltage regulator, which provides 400 mA of current.
It is available in a 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 LDQ44 suitable for low power battery-operated applications.
An enable logic control function puts the LDQ44 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 to 40 V
- Dropout voltage (1 V typ. at 400 mA load)
- Low ground current (2 μA typ. at no load)
- ADJ from 1.2 V to 12 V
- Output voltage tolerance: ± 2% over temperature, 0.5% at 25 °C
- 400 mA guaranteed output current
- Power good
- Logic-controlled electronic shutdown
- Internal current limit
- Short-circuit protection
- Thermal shutdown
- Output active discharge function
- Package options:
- DFN6 (2x2) WF for automotive grade
- DFN6 (2x2) for industrial grade
EDA Symbols, Footprints and 3D Models
STMicroelectronics - LDQ44
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| LDQ44PURY | Evaluation Product is under characterization. Limited Engineering samples available. EN | DFN 6L 2X2X 0.75 PITCH0.65 AG | Automotive | Ecopack3 | 10 | 2023-11-28T00:00:00.000+01:00 | |
LDQ44PURY
Package:
DFN 6L 2X2X 0.75 PITCH0.65 AGMaterial 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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| min | max | |||||||||||||||||
| LDQ44PURY | | | distributors No availability of distributors reported, please contact our sales office |
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LDQ44PURY Evaluation
(*) 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