LD1086DT50 STMicroelectronics Integrated Circuit (Other) In Stock
STMicroelectronics LD1086DT50 is a 1.5 A fixed 5 V LDO voltage regulator with 1.3 V typical dropout voltage, 0.01% line regulation, and 30 V maximum input, housed in a 3-pin DPAK package for board-level power supply design.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- LD1086DT50 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6792(MOQ 260)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LD1086DT50?
- Fixed 5 V output at 1.5 A continuous current with ±1% accuracy for stable power delivery to digital and analog loads
- Low 1.3 V typical dropout voltage allowing regulation from supplies as low as 6.6 V, ideal for minimizing power dissipation
- Excellent line regulation of 0.01% maximum ensuring stable 5 V output even under fluctuating input voltages up to 30 V
What is LD1086DT50 used for?
The LD1086DT50 is suited for post-regulation in power supply boards, industrial controller backplanes, and embedded systems where a stable 5 V rail at up to 1.5 A is required with low output noise and tight regulation. Its DPAK package with exposed thermal pad enables efficient heat dissipation without bulky heatsinks, making it practical for high-current applications in compact enclosures. The device is also used in automotive accessory power circuits and laboratory instrument power stages requiring reliable linear regulation from unregulated DC inputs up to 30 V.
What are the specifications of LD1086DT50?
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1.5V |
| Dropout Voltage1-Nom | 1.3V |
| Input Voltage Absolute-Max | 30V |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 6.6V |
| JESD-30 Code | R-PSSO-G3 |
| Line Regulation-Max | 0.01% |
| Load Regulation-Max | 0.035% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1.5A |
| Output Voltage1-Max | 5.1V |
| Output Voltage1-Min | 4.9V |
| Output Voltage1-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.38,90TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.28mm |
| Terminal Position | SINGLE |
| Voltage Tolerance-Max | 2% |
| ## LD1086DT50 Alternates Showing results | Image |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LD1086DT50 datasheet?
LD1086DT50 Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for LD1086DT50?
Compatible alternatives and drop-in replacements for LD1086DT50:
Frequently Asked Questions
What is the maximum output current of the LD1086DT50 and what dropout voltage does it require to maintain regulation?
The LD1086DT50 delivers up to 1.5 A continuous output current at 5 V with a typical dropout voltage of 1.3 V and a maximum of 1.5 V. This means the input supply must remain at least 6.6 V to keep the output regulated, making it well-suited for 7 V to 12 V unregulated power supplies commonly used in industrial equipment.
How does the LD1086DT50's line regulation performance benefit sensitive analog circuits powered from a noisy input rail?
The LD1086DT50 provides line regulation of 0.01% maximum, meaning the 5 V output varies by no more than 0.5 mV for every 1 V change in the input voltage up to 30 V. This exceptional stability effectively isolates sensitive analog measurement circuits and precision references from input supply fluctuations, reducing noise and improving system accuracy.
What package does the LD1086DT50 use and how does thermal management affect its maximum current delivery?
The LD1086DT50 comes in a 3-pin DPAK (TO-252) package, which features an exposed metal tab for soldering directly to a PCB copper pour or external heatsink. Proper thermal management using a 1 cm² to 4 cm² copper pad allows the device to sustain the full 1.5 A output continuously without exceeding its maximum junction temperature of 125°C.
When would the LD1086DT50 be chosen over a switching regulator for a 5 V power supply design?
The LD1086DT50 is preferred over a switching regulator when output noise below 100 µV RMS is critical, such as in audio amplifiers, RF circuits, or precision ADC supply rails where switching ripple would degrade signal quality. Linear regulators like the LD1086DT50 also have simpler designs with fewer external components, reducing BOM cost and PCB space in low-power applications with modest efficiency requirements.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 260+ | $0.7836 | $203.74 |
| 335+ | $0.7575 | $253.76 |
| 445+ | $0.6792 | $302.24 |
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