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Analog Devices Inc. LTC4415EDHC#PBF
- Part No.:
- LTC4415EDHC#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- OR Controllers, Ideal Diodes
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC4415EDHC#PBF.pdf
- Description:
- IC OR CTRLR SRC SELECT 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,875
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Product details
Overview
LTC4415EDHC#PBF from Analog Devices (formerly Linear Technology) is a dual-channel monolithic ideal diode controller IC designed for high-current power supply ORing and prioritized switchover applications. It integrates two independent 4A ideal diodes with 50mΩ typical on-resistance, 15mV regulated forward drop at low load, and adjustable current limiting from 0.5A to 4A per channel. It operates across 1.7V–5.5V input range and is used in battery/wall-adapter ORing, supercapacitor backup, and multi-source power management systems.
For engineers reviewing the LTC4415EDHC#PBF datasheet, LTC4415EDHC#PBF pinout, LTC4415EDHC#PBF application, or LTC4415EDHC#PBF equivalent, key selection considerations include dual independent enable logic (EN1 high-active / EN2 low-active), open-drain STAT/WARN status outputs, CLIM-based current monitoring and limit setting, thermal warning (130°C) and shutdown (160°C), and compatibility with 3mm × 5mm DFN-16 (exposed pad) layout requirements.
Technical Context
The LTC4415EDHC#PBF implements two independent PowerPath™ ideal diode circuits using internal PFETs with gate drivers that regulate forward voltage drop to 15mV at light loads and transition to constant-resistance mode (RON = 50mΩ typ.) at higher currents. Each channel features precision enable thresholds (800mV typ., 55mV hysteresis), undervoltage lockout (1.63V), and reverse turn-off voltage of –30mV.
Current limiting is set via external resistors on CLIM1/CLIM2 (125Ω–1000Ω), yielding 0.5A–4A adjustable limits with ±8% accuracy at 4A; current monitoring is achieved via 1:1000 IOUT-to-ICLIM scaling. Thermal protection includes independent die temperature sensing per channel, with WARN pins asserting at 130°C and thermal shutdown at 160°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 1.7V to 5.5V - supports Li-ion, USB, and industrial rail voltages without level-shifting. |
| Max Output Current per Channel | 4A - enables high-power load sharing without external MOSFETs or heatsinks in compact layouts. |
| Forward Regulation Drop | 15mV (typ.) - extends battery runtime and maintains regulation in low-headroom systems vs. Schottky diodes. |
| Reverse Leakage Current | 1µA max - prevents backfeed in ORing configurations and preserves secondary source integrity. |
| On-Resistance (RON) | 50mΩ (typ.) - minimizes conduction loss and thermal rise at full 4A load (≤0.8W/channel). |
| Switchover Time | 9µs - ensures seamless, glitch-free transitions between primary and backup supplies during fault events. |
| Thermal Warning Threshold | 130°C - provides early overtemperature alert while allowing continued operation until 160°C shutdown. |
Pinout & Package
Package: 16-lead (5mm × 3mm) plastic DFN with exposed thermal pad (Pin 17 = GND). Requires soldering of exposed pad to PCB ground plane for thermal performance (θJA = 43°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1 (Pins 1, 2) | Diode 1 anode input | Fused pins accept primary supply; bypass with ≥4.7µF ceramic capacitor near package. |
| EN1 (Pin 3) | High-active enable for Diode 1 | Enables conduction when >800mV; hysteresis ensures clean turn-on/turn-off at 745mV threshold. |
| CLIM1 (Pin 4) | Current limit adjust & monitor for Diode 1 | Resistor to GND sets 0.5A–4A limit; voltage = IOUT1/1000 enables real-time current sensing. |
| CLIM2 (Pin 5) | Current limit adjust & monitor for Diode 2 | Independent of CLIM1; same scaling and resistor range; critical for asymmetric load sharing. |
| EN2 (Pin 6) | Low-active enable for Diode 2 | Enables when <800mV - enables priority-based ORing where Diode 2 acts as backup path. |
| IN2 (Pins 7, 8) | Diode 2 anode input | Fused pins accept secondary supply (e.g., backup battery); requires local 4.7µF decoupling. |
| OUT2 (Pins 9, 10) | Diode 2 cathode output | Fused pins connect to shared load node; must be tied to OUT1 for ORing configuration. |
| STAT2 (Pin 11) | Open-drain status for Diode 2 | Pulled low during forward conduction; high-Z when disabled or in reverse blocking - indicates active path. |
| WARN2 (Pin 12) | Overcurrent/thermal warning for Diode 2 | Pulled low after 500µs delay if IOUT2 exceeds limit or die temp ≥130°C - enables system-level fault response. |
| WARN1 (Pin 13) | Overcurrent/thermal warning for Diode 1 | Independent warning signal; allows per-channel fault isolation without cross-talk. |
| STAT1 (Pin 14) | Open-drain status for Diode 1 | Active-low indicator synchronized to Diode 1 conduction - used for sequencing or telemetry. |
| OUT1 (Pins 15, 16) | Diode 1 cathode output | Fused pins join OUT2 at load node; requires local 4.7µF capacitor to suppress switchover droop. |
| GND (Pin 17) | Power and thermal ground | Exposed pad must be soldered to solid PCB ground plane - essential for thermal reliability and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent ideal diodes | Each supports up to 4A with 15mV regulated forward drop and 50mΩ RON - eliminates need for discrete Schottky or MOSFET solutions. |
| Adjustable per-channel current limit | 0.5A–4A via external CLIM resistors (125Ω–1000Ω), with ±8% accuracy at full scale - enables precise overcurrent protection matching load requirements. |
| Priority-based ORing control | EN1 (high-active) and EN2 (low-active) allow deterministic switchover hierarchy - e.g., wall adapter (Diode 1) takes precedence over battery (Diode 2). |
| Real-time load current monitoring | CLIM pins output 1/1000× IOUT - enables analog current readback without shunt resistors or additional ICs. |
| Integrated thermal warning & shutdown | Per-channel 130°C warning and 160°C shutdown with hysteresis - protects against sustained overload while preserving system visibility. |
| Ultra-low quiescent current | 44µA (forward) / 13µA (shutdown) - minimizes standby drain in battery-backed systems. |
Applications
| Battery Backup ORing | Supercapacitor Power Hold-Up |
|---|---|
|
Use Scenario: Seamless transition from main DC supply to lithium coin cell or LiPo battery during AC failure or brownout. IC Role / Device Role / Timing Role: Dual ideal diode enforces priority (main > backup) and regulates forward drop to maximize battery life. Use Value: 15mV forward regulation extends usable battery voltage range by >100mV vs. Schottky diodes, delaying cutoff and increasing hold-up time. |
Use Scenario: Maintaining system power during brief input interruptions using supercapacitors charged from primary rail. IC Role / Device Role / Timing Role: Ideal diode isolates supercap from charging circuit and delivers stored energy with minimal loss during discharge. Use Value: 50mΩ RON and 9µs switchover minimize voltage droop and ensure uninterrupted operation for microcontroller reset-free hold-up. |
| Multi-Battery Load Sharing | Industrial Redundant Power Supply |
|
Use Scenario: Equalizing current between two chemically identical batteries (e.g., 2S Li-ion packs) feeding common load. IC Role / Device Role / Timing Role: Dual independent current-limited paths prevent circulating currents and enforce balanced discharge. Use Value: Adjustable 0.5A–4A per-channel limit prevents over-stress during mismatched SoC or aging - improves pack longevity and safety. |
Use Scenario: ORing two independent 24V industrial power supplies to feed PLC I/O modules with zero-downtime redundancy. IC Role / Device Role / Timing Role: High-current ideal diode replaces bulky mechanical relays or discrete MOSFET controllers in DIN-rail systems. Use Value: 4A per channel and 1.7V–5.5V range support wide-input industrial rails; 1µA reverse leakage prevents backfeed-induced supply instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ideal diode controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4412EMS#PBF | Single-channel, 2.5A max, no current limit adjustment, no CLIM monitoring, smaller MSOP-8 package. | Suitable only for non-redundant, lower-current paths; lacks dual-path coordination and telemetry. | Select when cost, size, or simplicity outweigh need for dual-channel control and current visibility. |
| TPS2113APWR | TI dual ideal diode with fixed 2A limit per channel, no adjustable current limit, no thermal warning pins, 2.5V–5.5V range. | No per-channel temperature monitoring or WARN signaling; less flexible enable logic (both high-active). | Choose for basic ORing where thermal margin is ample and current limiting is not required beyond 2A. |
Compared with LTC4415EDHC#PBF, LTC4412EMS#PBF reduces channel count and monitoring capability but lowers BOM cost and footprint; TPS2113APWR offers TI ecosystem integration but sacrifices programmability, thermal diagnostics, and low-voltage operation below 2.5V.
Availability
LTC4415EDHC#PBF is available at Aetrix Electronics and suitable for battery backup ORing, supercapacitor hold-up, multi-battery load sharing, and industrial redundant power supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC4415EDHC#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC4415EDHC#PBF belongs to ADI's PowerPath™ ideal diode controller product line, engineered specifically for high-efficiency, high-reliability power ORing, backup switchover, and load-sharing in space-constrained, thermally demanding applications.
FAQ
What is the operating voltage range of the LTC4415EDHC#PBF?
The LTC4415EDHC#PBF operates from 1.7V to 5.5V across its IN1, IN2, OUT1, and OUT2 pins. This range supports single-cell Li-ion (2.7–4.2V), USB-powered systems (4.75–5.25V), and industrial 3.3V/5V rails. The device requires at least one input or output to remain within this window to maintain functionality, and its undervoltage lockout triggers at 1.63V (rising) to prevent erratic behavior during brownout conditions.
How does the LTC4415EDHC#PBF implement prioritized power switchover?
The LTC4415EDHC#PBF uses complementary enable logic: EN1 is high-active and EN2 is low-active. When both inputs are present, Diode 1 (IN1→OUT1) conducts first. If IN1 drops below UVLO or EN1 is deasserted, Diode 2 (IN2→OUT2) automatically engages - provided EN2 is pulled low. This asymmetry enables deterministic priority without external logic, making LTC4415EDHC#PBF ideal for wall-adapter-first battery-backup systems.
Can the LTC4415EDHC#PBF monitor output current in real time?
Yes - the LTC4415EDHC#PBF provides real-time current monitoring via its CLIM1 and CLIM2 pins, which sink current equal to 1/1000th of their respective output currents (IOUT1 and IOUT2). By measuring the voltage across the ground-connected CLIM resistor (e.g., 124Ω), users calculate IOUT = 1000 × VCLIM / RCLIM. This eliminates the need for external sense resistors or amplifiers, reducing BOM count and board area.
What thermal protection features does the LTC4415EDHC#PBF include?
The LTC4415EDHC#PBF incorporates per-channel thermal sensing with two distinct thresholds: a 130°C warning (TWARN) that pulls WARN1/WARN2 low with 15°C hysteresis, and a 160°C thermal shutdown (TSD) that disables the affected channel and releases STAT1/STAT2. These independent protections allow one diode to shut down due to overload while the other continues supplying power - critical for fault-tolerant ORing designs.
Is the LTC4415EDHC#PBF pin-compatible with other packages in the LTC4415 family?
No - the LTC4415EDHC#PBF uses the 16-lead 5mm × 3mm DFN package (DHC), while the LTC4415EMSE#PBF uses a 16-lead MSOP (MSE). Although both share identical pin numbering and functions, the DFN exposes a thermal pad (Pin 17 = GND) requiring PCB land pattern adaptation, and has different thermal resistance (θJA = 43°C/W vs. 35–40°C/W for MSOP). Layout and thermal design must be re-validated when switching packages.
LTC4415EDHC#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PowerPath™
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Source Selector Switch
- FET Type:
- P-Channel
- Ratio - Input:Output:
- 2:2
- Internal Switch(s):
- Yes
- Delay Time - ON:
- -
- Delay Time - OFF:
- -
- Current - Output (Max):
- 4A
- Current - Supply:
- 44 µA
- Voltage - Supply:
- 1.7V ~ 5.5V
- Applications:
- Battery Backup, High Current Switch
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC4415EDHC#PBF FAQ
1.How can I place an order for LTC4415EDHC#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4415EDHC#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC4415EDHC#PBF reliable?
The price and inventory of LTC4415EDHC#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4415EDHC#PBF is usually 5 days.
3.What payment methods are accepted for LTC4415EDHC#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4415EDHC#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4415EDHC#PBF?
LTC4415EDHC#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4415EDHC#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC4415EDHC#PBF?
For technical support, including LTC4415EDHC#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4415EDHC#PBF requirements.
6.How does Aetrix verify that LTC4415EDHC#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4415EDHC#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC4415EDHC#PBF meets industry standards.
7.What is the process for return or replacement of LTC4415EDHC#PBF?
All LTC4415EDHC#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4415EDHC#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC4415EDHC#PBF part is unused and in its original packaging.
Return procedure for LTC4415EDHC#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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