LTC4357IDCB#TRMPBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
The LTC4357IDCB#TRMPBF is a positive high-voltage ideal diode controller from Analog Devices, using an external N-channel MOSFET to replace a conventional Schottky diode with near-zero forward voltage drop across a supply range of 4.5 V to 44 V. Housed in a 6-pin SOT-23 package, it reduces conduction losses in ORing and reverse-polarity protection circuits for industrial and telecom power systems.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- LTC4357IDCB#TRMPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.2286(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC4357IDCB#TRMPBF?
- Drives external N-channel MOSFET as a low-loss ideal diode with near-zero V_F drop
- 4.5 V to 44 V supply range covers wide-input industrial and telecom power rails
- Eliminates Schottky diode conduction loss to improve power efficiency in ORing circuits
- Fast turn-off for reverse-current blocking protects against reverse-polarity faults
- Compact 6-pin SOT-23 package minimises footprint in space-constrained power designs
What is LTC4357IDCB#TRMPBF used for?
The LTC4357IDCB#TRMPBF is used in high-availability power systems, server backplanes, and telecom equipment where two or more power supplies must be ORed together to provide redundancy without the voltage drop and heat dissipation of conventional Schottky diodes. Its near-zero forward voltage drop translates directly into higher system efficiency and reduced thermal management requirements at load currents limited only by the chosen external MOSFET. It is also applied in battery-backup circuits and reverse-polarity protection stages for 12 V, 24 V, and 48 V industrial supply rails.
What are the specifications of LTC4357IDCB#TRMPBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1715 |
| YTEOL | 10 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | ACTIVE BRIDGE CONTROLLER |
| JESD-30 Code | R-PDSO-N6 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC6,.12,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 80V |
| Supply Voltage-Min (Vsup) | 9V |
| Supply Voltage-Nom (Vsup) | 20V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## LTC4357IDCB#TRMPBF Alternates Showing results | Image |
| Package | Small Outline No-lead |
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 LTC4357IDCB#TRMPBF datasheet?
LTC4357IDCB#TRMPBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC4357IDCB#TRMPBF?
Compatible alternatives and drop-in replacements for LTC4357IDCB#TRMPBF:
suggested
suggested
Frequently Asked Questions
How does the LTC4357IDCB#TRMPBF reduce power loss compared to a Schottky diode in an ORing application?
A typical Schottky diode drops 0.3 V to 0.6 V at high currents, dissipating significant heat. The LTC4357IDCB#TRMPBF drives an external N-channel MOSFET to achieve a forward drop determined only by I×R_DS(on), which can be as low as a few millivolts at moderate currents. For a system passing 10 A, this can reduce conduction loss from 5 W (at 0.5 V drop) to under 0.1 W with a suitable 10 mΩ MOSFET.
What input voltage range does the LTC4357IDCB#TRMPBF support, and which power rail architectures does it target?
The LTC4357IDCB#TRMPBF operates across a supply range of 4.5 V to 44 V, covering 5 V, 12 V, 24 V, and 48 V bus architectures common in server power distribution, telecom rectifiers, and industrial control panels. This wide range lets a single component address multiple supply standards within the same product family without requiring different diode controllers for each rail voltage.
In a dual-supply redundant power design, how quickly does the LTC4357IDCB#TRMPBF respond to a failing supply to prevent back-current?
When the monitored supply voltage drops below the parallel ORed rail, the LTC4357IDCB#TRMPBF detects the reverse voltage across the MOSFET and turns it off within microseconds, blocking reverse current flow before meaningful charge returns to the failing supply. This fast response, combined with the 44 V maximum rating, ensures reliable redundant power delivery in 48 V telecom and server backplane systems where supply hotswap events occur frequently.
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Why Buy from FindMyChip
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+ | $7.6900 | $7.69 |
| 3+ | $4.8600 | $14.58 |
| 10+ | $4.2900 | $42.90 |
| 25+ | $3.8600 | $96.50 |
| 85+ | $3.5629 | $302.85 |
| 250+ | $3.2286 | $807.16 |
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