LTC1871XMS#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LTC1871XMS#PBF is a wide input range, No RSENSE current-mode PWM controller for boost, flyback, and SEPIC topologies from Analog Devices. It accepts 2.5 V to 36 V input and drives external N-channel MOSFETs with programmable frequency and soft-start. Available in a 10-pin MSOP package with lead-free construction.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- LTC1871XMS#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $169.2800(MOQ 1)
- Temp Range
- -40.0°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC1871XMS#PBF?
- No RSENSE current sensing eliminates power-wasting sense resistor, improving efficiency across 2.5 V to 36 V input range
- Supports boost, flyback, and SEPIC topologies from a single controller IC
- Programmable oscillator frequency up to 600 kHz for compact, low-profile magnetics
- Drives external N-channel MOSFET gate with integrated gate driver, reducing external component count
What is LTC1871XMS#PBF used for?
The LTC1871XMS#PBF is used in industrial power supplies, portable instruments, and battery-powered systems requiring efficient DC-DC voltage step-up. Its support for boost, flyback, and SEPIC topologies makes it a versatile controller for generating multiple output voltages from a single input rail of 2.5 V to 36 V. The compact 10-pin MSOP package enables dense power converter designs in space-constrained enclosures.
What are the specifications of LTC1871XMS#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1661 |
| YTEOL | 9 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 36V |
| Input Voltage-Min | 2.5V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 1000kHz |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
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 LTC1871XMS#PBF datasheet?
LTC1871XMS#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC1871XMS#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LTC1871XMS#PBF support, and which topologies can it control?
The LTC1871XMS#PBF accepts an input voltage from 2.5 V to 36 V and supports boost, flyback, and SEPIC converter topologies. This broad range accommodates single-cell lithium batteries at 2.5 V through automotive 24 V rails, making it versatile for multi-application power designs.
How does the No RSENSE architecture of the LTC1871XMS#PBF improve power supply efficiency?
By eliminating the external current-sense resistor, the LTC1871XMS#PBF removes the I²R power loss that conventional sense resistors introduce. In a 5 A inductor current design, even a 20 mΩ resistor dissipates 500 mW; removing it directly improves efficiency, especially at high load currents.
What is the maximum switching frequency of the LTC1871XMS#PBF, and how does it affect magnetics size?
The LTC1871XMS#PBF supports switching frequencies up to 600 kHz, set by an external resistor. Higher switching frequency allows inductors and capacitors to shrink proportionally, reducing inductor size by 4× or more compared to a 150 kHz design, enabling compact power modules.
Which package does the LTC1871XMS#PBF use, and how does it suit high-density power supply PCBs?
The LTC1871XMS#PBF is packaged in a 10-pin MSOP (Small Outline Package) measuring approximately 3 mm × 3 mm. This compact footprint allows placement close to power stage components, reducing gate drive trace inductance and improving switching performance in dense PCB layouts.
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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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $189.8100 | $189.81 |
| 10+ | $184.0000 | $1840.00 |
| 1000+ | $169.2800 | $169280.00 |
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