LT1268CT#PBF Analog Devices Integrated Circuit (Transistor Outline, Vertical) In Stock
LT1268CT#PBF is a current-mode switching regulator from Analog Devices delivering up to 7.5 A output current with a 3 V to 30 V input range. It suits high-current DC-DC conversion in telecom and industrial power supplies, offered in a TO-220-5 package. From $6.10, in stock, worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Transistor Outline, Vertical
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- LT1268CT#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $10.6100(MOQ 10)
- Temp Range
- ?°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT1268CT#PBF?
- Delivers up to 7.5 A continuous output current for high-current DC-DC converter and point-of-load supply designs
- Wide 3 V to 30 V input voltage range accommodates diverse power sources including battery, automotive, and telecom rails
- Current-mode control architecture provides fast transient response and inherent overcurrent protection with cycle-by-cycle limiting
- TO-220-5 through-hole package enables easy heatsinking and thermal management in high-power applications
- Operates efficiently across a broad input range, minimizing power loss in multi-rail industrial and communications systems
What is LT1268CT#PBF used for?
The LT1268CT#PBF is suited for high-current step-down and step-up DC-DC converter designs in industrial power supplies, telecom base station power modules, and embedded computing systems requiring 7.5 A load capability. Its 3 V to 30 V input range covers a wide variety of bus voltages, making it a versatile building block for programmable bench power supplies, motor pre-driver rails, and distributed point-of-load converters. The TO-220-5 package allows direct mounting to chassis heatsinks for efficient thermal dissipation in continuous high-load operation.
What are the specifications of LT1268CT#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1421 (STD) |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PZFM-T5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 7.5A |
| Output Voltage-Nom | 1.244V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 10mA |
| Surface Mount | NO |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 150kHz |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) - with Nickel (Ni) barrier |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 1.7mm |
| Terminal Position | ZIG-ZAG |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT1268CT#PBF datasheet?
LT1268CT#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT1268CT#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum continuous output current the LT1268CT#PBF can supply, and what load applications does this support?
The LT1268CT#PBF supplies up to 7.5 A continuous output current, making it suitable for powering high-current processor cores, FPGA I/O banks, multi-channel motor driver pre-stages, and distributed point-of-load converters in 3 V to 30 V input systems. At 7.5 A, it can drive PCIe add-in cards, solid-state drive arrays, or small embedded computing modules from a single compact TO-220-5 switching regulator.
How does current-mode control in the LT1268CT#PBF improve transient response compared to voltage-mode regulators?
Current-mode control in the LT1268CT#PBF senses and limits inductor current on a cycle-by-cycle basis, enabling faster line and load transient response than voltage-mode designs. When output load steps from light to 7.5 A, the inner current loop reacts within a single switching cycle, reducing output voltage deviation and recovery time. This also provides inherent peak-current limiting that protects the inductor and power stage from fault conditions over the 3 V to 30 V input range.
For a telecom -48 V to 5 V DC-DC converter, why would an engineer choose LT1268CT#PBF over a lower-current regulator?
In telecom systems with -48 V bus voltages stepped down to 5 V logic rails, the LT1268CT#PBF's 30 V maximum input and 7.5 A output handle the high current demands of line cards and DSP subsystems in a single device. Lower-current regulators rated at 1 A to 3 A would require paralleling multiple units or adding external pass transistors, increasing BOM complexity and PCB area versus the integrated 7.5 A capability of the LT1268CT#PBF in its TO-220-5 package.
What thermal management approach is recommended for the LT1268CT#PBF TO-220-5 package in a 7.5 A continuous application?
The LT1268CT#PBF's TO-220-5 through-hole package allows direct bolting to an aluminum heatsink or chassis, which is necessary at 7.5 A continuous loads where junction temperature must stay below 125°C. With a typical thermal resistance of 5°C/W junction-to-case for the TO-220-5 package, a heatsink with less than 3°C/W thermal resistance is recommended at maximum power dissipation to maintain reliable long-term operation across the -40°C to +125°C ambient range.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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