LTC3894IFE#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LTC3894IFE#PBF is a 150V, low-IQ current-mode step-down DC/DC controller with burst-mode operation in a small outline package. It accepts input voltages from 4.5V to 150V, making it suitable for high-voltage industrial and automotive power stages. Available in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LTC3894IFE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.0100(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC3894IFE#PBF?
- 150V maximum input voltage supports direct step-down from high-voltage industrial rails such as 100V and 120V bus without pre-regulation
- Ultralow quiescent current with burst-mode operation extending battery life in always-on industrial IoT and automotive standby systems
- Current-mode control with programmable switching frequency from 50 kHz to 500 kHz for optimized efficiency and EMI filtering
- Wide 4.5V to 150V input range accommodates automotive 12V/48V systems and industrial 24V to 96V DC bus architectures in a single design
What is LTC3894IFE#PBF used for?
The LTC3894IFE#PBF targets high-voltage industrial power supplies that step down 48V, 72V, or 100V DC bus rails to regulated 5V, 12V, or 24V outputs for PLC backplanes, motor drive logic supplies, and building automation controllers. In automotive applications it handles 12V-to-48V mild-hybrid bus conversion and off-battery 48V rail regulation where high-voltage transients up to 150V can appear during load-dump events. Its low quiescent current and burst-mode capability also suit solar and battery-backed systems requiring efficient standby operation.
What are the specifications of LTC3894IFE#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1924 |
| Date Of Intro | 2018-04-26 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | BURST MODE |
| Input Voltage-Max | 150V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Voltage-Max | 60V |
| Output Voltage-Min | 0.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 850kHz |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| 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 LTC3894IFE#PBF datasheet?
LTC3894IFE#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC3894IFE#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum input voltage the LTC3894IFE#PBF can handle, and which industrial systems benefit from this rating?
The LTC3894IFE#PBF accepts a maximum input voltage of 150V, allowing direct connection to industrial 100V and 120V DC distribution buses without a pre-regulator stage. This 150V capability also covers automotive 48V systems during load-dump transients that can spike to over 100V, as well as solar panel strings whose open-circuit voltage can exceed typical panel ratings by 20% to 30% at cold temperatures, making the controller a single-part solution for high-voltage step-down in multiple applications.
How does burst-mode operation in the LTC3894IFE#PBF reduce power consumption in standby industrial equipment?
In burst mode, the LTC3894IFE#PBF reduces its quiescent supply current to microamp-level, skipping switching cycles when the output load falls below a programmable threshold. This dramatically cuts no-load losses in always-on industrial IoT gateways and automotive standby ECUs where 24/7 operation makes efficiency at light load critical. At 48V input stepping down to 5V output with 10 mA standby load, burst mode can cut power draw by more than 80% compared to fixed-frequency operation at the same conditions.
What switching frequency range does the LTC3894IFE#PBF support, and how does it affect filter component sizing?
The LTC3894IFE#PBF supports a programmable switching frequency from 50 kHz to 500 kHz, set by an external resistor on the RT pin. Operating at 500 kHz allows use of a 10 µH output inductor instead of the 100 µH part required at 50 kHz, reducing both inductor physical size and cost in high-density power supply designs. Lower frequencies such as 100 kHz maximize efficiency in high-voltage-input, high-power designs where switching losses in the external MOSFETs dominate the loss budget.
Which external MOSFET ratings are appropriate for use with the LTC3894IFE#PBF in a 100V-input step-down stage?
For a 100V input application, the high-side MOSFET must withstand at least 150V drain-to-source voltage (VDS) to accommodate transient spikes, with a gate threshold compatible with the LTC3894IFE#PBF's 10V gate drive output. A 200V-rated N-channel MOSFET with RDS(on) of 100 mΩ to 300 mΩ at 10V gate drive is typical for a 2A to 5A output current design, balancing conduction losses against switching losses at 100 kHz to 200 kHz switching frequency with the 150V-rated controller.
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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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| 1+ | $9.6400 | $9.64 |
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