LTC4414IMS8#TRPBF - 36V Low Loss PowerPath Controller | ADI
Référence : LTC4414IMS8TR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.85 | $3,85 |
| 10 | $3.48 | $34,80 |
| 100 | $3.18 | $318,00 |
| 500 | $2.99 | $1 495,00 |
| 1 000 | $2.85 | $2 850,00 |
LTC4414IMS8TR Présentation
A PowerPath controller is a type of power management IC that governs how multiple power sources connect to a load, sitting within the broader hierarchy of power management integrated circuits alongside voltage regulators, ORing controllers, and ideal diode controllers. Unlike a simple Schottky diode ORing scheme, a PowerPath controller actively drives the MOSFET gate so the pass element behaves like an ideal diode with millivolt-level forward drop, dramatically reducing conduction loss and self-heating.
Key features of the LTC4414 include a wide operating voltage capability up to 36V, control of large P-channel MOSFETs for high-current rails, and highly efficient ORing of multiple power sources for extended battery life and low self-heating, as described on the Analog Devices product page. The LTC4414I grade is guaranteed and tested over the -40C to +125C operating temperature range, while the LTC4414E grade is guaranteed from 0C to 85C.
Technically, the controller regulates the MOSFET gate voltage to regulate the forward voltage across the FET, allowing near-ideal diode behavior with fast switchover between sources. This permits highly efficient ORing of battery, wall adapter, or auxiliary supplies without the 0.3V to 0.5V drop of Schottky diodes, which matters greatly at multi-amp load currents where diode loss would be measured in watts.
Typical applications include battery backup switchover in industrial instruments, redundant supply ORing in telecom and networking equipment, and automotive or high-voltage auxiliary rail selection up to 36V.
When designing with this part, select a P-channel MOSFET whose gate-source voltage rating tolerates the full 36V input span, and verify gate-drive timing against your supply-switchover requirements.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour LTC4414IMS8TR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
LTC4414IMS8#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC4414EMS8#TRPBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC4414EMS8#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC4414HVIMS8#TRPBF
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
LTC4414IMS8TR Spécifications
| Fonction | Low Loss PowerPath Controller for Large PFETs |
| Maximum Input Voltage | 36 V |
| Switch Configuration | Source Selector, P-Channel 2:1 |
| External Pass Element | P-Channel MOSFET |
| Diode Function | Near-ideal diode (active gate drive) |
| Operating Temperature Range (I grade) | -40C to +125C (guaranteed and tested) |
| Operating Temperature Range (E grade) | 0C to +85C |
| Boîtier | 8-MSOP |
| Number of Terminals | 8 |
| Type de montage | Surface Mount |
| Packaging | Tape & Reel (TR suffix) |
| Pb-Free | Yes (#PBF suffix) |
| Statut RoHS | Compliant |
Guide de configuration des broches du LTC4414IMS8TR 8-msop
Configuration des broches du LTC4414IMS8TR (boîtier 8-msop). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour LTC4414IMS8TR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
LTC4414IMS8TR convient pour 6 applications: Battery Backup Switchover, Redundant Supply ORing in Telecom Equipment, Wall Adapter / Battery Source Selection in Portable Instruments, Automotive-Style 12V/24V Auxiliary Rail Selection, Industrial PLC and Instrumentation Dual-Rail Inputs, High-Current Server and Storage Feed Redundancy.
Battery Backup Switchover
The LTC4414 controls an external P-channel MOSFET to form a near-ideal diode between a primary supply and a backup battery, so the load draws from whichever source is higher with a forward drop of only millivolts instead of the 0.3V-0.5V of a Schottky ORing diode. In a 24V industrial instrument drawing several amps, replacing a Schottky with a low-Rds(on) PFET driven by the LTC4414 can save multiple watts of continuous dissipation, extending battery runtime and cutting self-heating inside sealed enclosures. Placed directly at the power entry with the controller powered from the combined rail and the gate driven to regulate the FET forward voltage, the circuit switches sources seamlessly on main-power failure. The -40C to +125C tested I-grade range supports unheated outdoor and industrial installations, and the 36V rating leaves headroom above 24V nominal rails.
Recommandé
Redundant Supply ORing in Telecom Equipment
Telecom and networking shelves often OR two independent -48V-derived or 24V-derived power feeds for redundancy. The LTC4414 drives a large P-channel MOSFET per feed, presenting near-ideal diode behavior so the healthy feed carries the load without circulating current between supplies. Its 36V rating covers 24V bus systems with transient margin, and active gate regulation keeps the conduction loss far below what a discrete ORing diode would waste, reducing heat load on shelf fans. The I grade is guaranteed and tested from -40C to +125C, covering equipment bays with limited airflow. Designers should choose a PFET with a Vgs rating exceeding the full bus voltage range and verify switchover timing so downstream hold-up capacitors cover the transition between feeds during failover events.
Recommandé
Wall Adapter / Battery Source Selection in Portable Instruments
Portable and battery-powered instruments must switch seamlessly between a wall adapter and an internal battery without interrupting the load. The LTC4414 senses the higher source and drives a P-channel MOSFET to carry load current with millivolt-level forward drop, so battery energy is not burned in a series diode during battery operation. Per the ADI product description, this highly efficient ORing extends battery life and lowers self-heating, directly increasing usable runtime in handheld or field equipment. The 8-pin MSOP-8 footprint keeps the controller cost and area small; the main board cost is the single external PFET, sized for the load current. The I-grade temperature range of -40C to +125C guarantees operation across outdoor field conditions from cold-start to direct sunlight exposure.
Recommandé
Automotive-Style 12V/24V Auxiliary Rail Selection
Heavy vehicles and industrial machinery run 12V and 24V auxiliary buses where transient voltages approach the 36V ceiling of the LTC4414. The controller ORs a main bus with an auxiliary or jump-start feed through a large P-channel MOSFET, holding the load rail up during bus dips without the static drop of ORing diodes, which at cranking-scale currents would dissipate unacceptable heat. Because the I grade is guaranteed and tested over -40C to +125C, it survives underhood-adjacent and unheated equipment compartments. Note that the LTC4414 itself is not AEC-Q100 qualified per available data, so for formal automotive platforms it should be validated with Analog Devices or a qualified alternative chosen. The near-ideal diode action minimizes forward drop, keeping auxiliary electronics alive during cranking transients.
Recommandé
Industrial PLC and Instrumentation Dual-Rail Inputs
PLCs, transmitters, and process instrumentation commonly accept both a 24V field supply and a locally generated backup rail. The LTC4414 performs 2:1 source selection with near-ideal diode behavior, ensuring the I/O electronics ride through supply transitions while minimizing standby losses in always-on installations. Its 36V maximum rating accommodates long cable runs and load-dump style excursions above 24V nominal, and the -40C to +125C tested I grade covers outdoor cabinets and cold-start conditions. Because the load current is set by the external P-channel MOSFET rather than the IC, one controller design scales across product families from hundreds of milliamps to multi-amp rails simply by resizing the FET. Forward drop regulation in the millivolt range preserves voltage headroom for downstream DC-DC converters with tight dropout budgets.
Recommandé
High-Current Server and Storage Feed Redundancy
Server and storage backplanes use redundant feeds that must OR near losslessly; at 20A or more, even a 0.3V Schottky drop wastes over 6W per path, whereas an LTC4414 driving a low-Rds(on) large P-channel MOSFET regulates the forward voltage to the millivolt range, cutting that loss by an order of magnitude and reducing heatsink demands. The controller continuously servos the FET gate so current flows only from the higher source, preventing reverse current between redundant supplies. Designers must size the PFET and copper pours for the full load current and verify thermal rise per the datasheet application guidance. Note the LTC4414 is a 36V-class controller for 24V-style buses; for lower-voltage servers, Analog Devices lower-voltage ideal diode controllers may be more appropriate.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LTC4414IMS8TR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | LTC4414IMS8#PBF | LTC4414EMS8#TRPBF | LTC4414EMS8#PBF |
|---|---|---|---|---|
| Package | 8-MSOP | 8-MSOP - same | 8-MSOP - same | 8-MSOP - same |
| Brand | Analog Devices (Linear Technology) | Analog Devices | Analog Devices | Analog Devices |
| Max Input Voltage | 36 V | 36 V | 36 V | 36 V |
| Temperature Grade | I grade (-40C to +125C, tested) | I grade (-40C to +125C, tested) | E grade (0C to +85C) | E grade (0C to +85C) |
| Function | PowerPath controller, PFET ideal diode, 2:1 | Identical | Identical | Identical |
| Pb-Free / RoHS | Yes (#PBF) | Yes (#PBF) | Yes (#TRPBF) | Yes (#PBF) |
| Packaging | Tape & Reel | Tube | Tape & Reel | Tube |
| Lifecycle Status | Active - recommended for new designs | Active | Active | Active |
Principaux différenciateurs
- Extended industrial temperature range (vs LTC4414EMS8#TRPBF)
- 36V input rating (vs LTC4412 (same family))
- Near-ideal diode conduction loss (vs Schottky diode ORing)
Notes de conception
The LTC4414 drives an external P-channel MOSFET, so the entire load current flows through the FET, not the IC. Select a PFET with a Vgs(max) rating that tolerates the full 36V input span (a 40V-class FET minimum), an Rds(on) low enough that conduction loss I^2*R meets your efficiency target, and a continuous current rating above maximum load with margin. Estimated: at 5A load with a 20 mOhm PFET, conduction loss is only 0.5W versus roughly 2W for a 0.4V Schottky diode - a 4x reduction in waste heat. Verify the forward-regulation setpoint in the datasheet when computing the effective diode drop.
Place the controller close to the P-channel MOSFET to keep the gate drive loop short, minimizing the chance of gate ringing during fast source transitions. Size the copper pour under the MOSFET source/drain pads for the full load current, not just for the small MSOP-8 controller. Decouple the LTC4414 supply pin with a local 0.1uF ceramic capacitor. Ensure the sense connection (sense resistor or direct FET connection, per the datasheet typical application) uses Kelvin routing so millivolt-level forward-voltage regulation is accurate despite large load currents in adjacent traces.
Confirm the temperature grade before ordering: the LTC4414E (EMS8) is only guaranteed from 0C to +85C, while the LTC4414I (IMS8) is guaranteed and tested from -40C to +125C. Using an E grade in an extended-temperature application voids the guaranteed spec. Also confirm you are ordering the #PBF (lead-free) code for RoHS-compliant new designs - legacy non-PBF stock is leaded material. Finally, note the LTC4414 is not AEC-Q100 qualified based on available data; do not specify it where formal automotive qualification is mandatory without ADI confirmation.
Informations de conformité
The #PBF suffix denotes Pb-free (lead-free) construction per Analog Devices ordering-code convention; the product page lists the LTC4414 as recommended for new designs. REACH, halogen-free, and conflict-minerals status not stated in provided data.
