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Analog Devices Inc. LTC4415EMSE#TRPBF
- Part No.:
- LTC4415EMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- OR Controllers, Ideal Diodes
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC4415EMSE#TRPBF.pdf
- Description:
- IC OR CTRLR SRC SELECT 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,903
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Product details
Overview
LTC4415EMSE#TRPBF 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 in 1.7V–5.5V systems. It integrates two independent 4A ideal diodes with 50mΩ typical RON, 15mV regulated forward drop at low load, <1µA reverse leakage, and adjustable current limiting (0.5A–4A per channel). It is used in battery/wall-adapter ORing, supercapacitor backup, and multi-source power path management.
For engineers reviewing the LTC4415EMSE#TRPBF datasheet, LTC4415EMSE#TRPBF pinout, LTC4415EMSE#TRPBF application, or LTC4415EMSE#TRPBF equivalent, key selection criteria include dual-channel independent enable control (EN1 high-active / EN2 low-active), thermal warning thresholds (130°C), soft-start duration (2ms), open-drain STAT/WARN outputs, and MSOP-16 package compatibility with exposed thermal pad grounding.
Technical Context
The LTC4415EMSE#TRPBF implements two independent PowerPath™ ideal diode circuits using internal PFETs (P1/P2) with three-mode conduction: constant-voltage regulation (15mV VFR) at light loads, constant-resistance operation (50mΩ RON) at mid loads, and active current limiting above threshold. Each channel features separate UVLO (1.63V), precision enable thresholds (800mV typ, ±55mV hysteresis), and independent CLIM-based current monitoring (1mA/A ratio).
Thermal protection is per-channel: WARN pins assert at 130°C (15°C hysteresis), and thermal shutdown triggers at 160°C (20°C hysteresis). Switchover time between inputs is 9µs, turn-on time is 10–250µs depending on output pre-bias, and reverse turn-off voltage is –30mV typical - enabling stable, oscillation-free ORing without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 1.7V to 5.5V - supports Li-ion, USB, and industrial 3.3V/5V rails without level-shifting |
| Max Output Current per Channel | 4A - enables high-power load sharing without external MOSFETs or heatsinks |
| Forward Regulation Voltage | 15mV typical - extends battery runtime by minimizing voltage headroom loss vs Schottky diodes |
| Reverse Leakage Current | <1µA max - prevents backfeed in redundant supply configurations |
| Current Limit Adjust Range | 0.5A to 4A per channel via CLIM resistor - allows precise overcurrent protection tuning |
| Switchover Time | 9µs - ensures seamless supply transition with <100mV droop at 1A load and 100µF output cap |
| Thermal Warning Threshold | 130°C - provides early fault indication before thermal shutdown at 160°C |
| Package Thermal Resistance (θJA) | 35°C/W to 40°C/W - requires exposed pad soldered to PCB ground for reliable 4A operation |
Pinout & Package
Package: 16-lead plastic MSOP with exposed thermal pad (Pin 17 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| 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 |
| EN1 (Pin 3) | High-active enable for Diode 1 | Enables conduction when >800mV; hysteresis prevents chatter near threshold |
| CLIM1 (Pin 4) | Current limit adjust & monitor for Diode 1 | Resistor to GND sets limit (0.5–4A); voltage = IOUT1/1000 for real-time monitoring |
| CLIM2 (Pin 5) | Current limit adjust & monitor for Diode 2 | Independent adjustment and monitoring identical to CLIM1 |
| EN2 (Pin 6) | Low-active enable for Diode 2 | Enables conduction when <800mV - enables priority-based ORing with EN1 |
| IN2 (Pins 7,8) | Diode 2 anode input | Fused pins accept secondary/backup supply; bypass with ≥4.7µF ceramic capacitor |
| OUT2 (Pins 9,10) | Diode 2 cathode output | Fused pins connect to shared load rail; must be tied to OUT1 for ORing |
| STAT2 (Pin 11) | Open-drain status for Diode 2 | Pulled low during forward conduction; high-Z when disabled or in reverse turn-off |
| WARN2 (Pin 12) | Open-drain overcurrent/thermal warning for Diode 2 | Pulled low if IOUT2 exceeds limit or die temp ≥130°C; 500µs delay on assertion |
| WARN1 (Pin 13) | Open-drain overcurrent/thermal warning for Diode 1 | Identical behavior to WARN2, independent per channel |
| STAT1 (Pin 14) | Open-drain status for Diode 1 | Same function as STAT2, synchronized to Diode 1 conduction state |
| OUT1 (Pins 15,16) | Diode 1 cathode output | Fused pins connect to shared load rail; tied to OUT2 for ORing topology |
| GND (Pin 17) | Device ground & thermal pad | Exposed pad must be soldered to large PCB ground plane for thermal dissipation and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent ideal diodes | Each supports up to 4A with 50mΩ RON and 15mV regulated forward drop - eliminates need for two discrete ideal diode ICs |
| Priority-based ORing control | EN1 (high-active) and EN2 (low-active) allow deterministic switchover sequence without external logic |
| Per-channel current monitoring | CLIM pins output 1mA per amp of load current - enables real-time telemetry without sense resistors |
| Integrated thermal warning & shutdown | 130°C warning and 160°C shutdown per channel - protects against localized overheating without system-level sensors |
| Soft-start with adaptive disable | 2ms ramp-up from zero to current limit, disabled automatically when VOUT > 1.2V - prevents droop during fast switchover |
| Stable operation with minimal layout effort | No external compensation required; CLIM pin stability ensured by ≤200pF parasitic capacitance - simplifies high-frequency board design |
Applications
| Battery + Wall Adapter ORing | Backup Battery Switchover |
|---|---|
Use Scenario: Portable medical device powered by Li-ion battery and USB-C wall adapter, requiring seamless transition when adapter is unplugged. IC Role / Device Role / Timing Role: LTC4415EMSE#TRPBF acts as dual-path PowerPath controller, enabling priority-based switchover with 9µs response and no output droop. Use Value: Extends runtime by 12% vs Schottky diodes due to 15mV forward drop, while eliminating reverse leakage-induced battery drain. |
Use Scenario: Industrial PLC with main 24V supply and supercapacitor backup, needing fail-safe transition during AC outage. IC Role / Device Role / Timing Role: LTC4415EMSE#TRPBF serves as prioritized ideal diode, using EN1/EN2 polarity to enforce automatic switchover below 23.5V threshold. Use Value: Enables 100% uninterrupted operation with sub-100µs switchover and no firmware intervention or external supervision. |
| Supercapacitor ORing | Multi-Battery Load Sharing |
Use Scenario: Energy-harvesting sensor node using solar-charged supercapacitor bank and coin-cell battery for nighttime operation. IC Role / Device Role / Timing Role: LTC4415EMSE#TRPBF manages bidirectional energy flow, blocking reverse current from supercap into battery while regulating forward drop. Use Value: Prevents 95% of self-discharge losses seen with passive diodes, extending supercap hold-up time from 4h to >18h at 100mA load. |
Use Scenario: UAV flight controller distributing load across two parallel LiPo packs with independent health monitoring. IC Role / Device Role / Timing Role: LTC4415EMSE#TRPBF functions as dual-channel current-balanced ORing controller, with CLIM pins feeding ADC for pack current telemetry. Use Value: Achieves ±3% current matching between packs and provides per-pack overcurrent warning before thermal derating occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ideal diode ORing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2113APWR | Single-channel, 2.5A max, no adjustable current limit, no thermal warning, 100mΩ RON | Suitable only for lower-current, non-redundant paths; lacks dual-channel coordination and telemetry | Select when cost sensitivity outweighs performance and diagnostics requirements |
| LTC4412EMS#TRPBF | Single-channel version of same family; identical 4A rating, 50mΩ RON, and CLIM monitoring but no second diode or EN2 logic | Requires two units for dual-path designs, increasing BOM count and PCB area vs single LTC4415EMSE#TRPBF | Select when space permits discrete implementation or channel isolation is mandatory |
Compared with TPS2113APWR and LTC4412EMS#TRPBF, the LTC4415EMSE#TRPBF delivers integrated dual-channel control, per-path thermal warning, and real-time current monitoring - reducing system-level complexity and improving fault visibility in mission-critical ORing applications.
Availability
LTC4415EMSE#TRPBF is available at Aetrix Electronics and suitable for battery backup systems, industrial power ORing, and supercapacitor energy storage applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC4415EMSE#TRPBF 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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving aerospace, industrial, automotive, and communications markets.
The LTC4415EMSE#TRPBF belongs to the PowerPath™ ideal diode product line, engineered specifically for high-efficiency, low-drop power path control in redundant supply systems where reliability, thermal robustness, and diagnostic capability are critical.
FAQ
What is the operating temperature range for the LTC4415EMSE#TRPBF?
The LTC4415EMSE#TRPBF is rated for operation from –40°C to 125°C junction temperature. Its E-grade MSOP package is specified across this full range, with thermal shutdown triggered at 160°C and thermal warning asserted at 130°C. The exposed thermal pad must be soldered to PCB ground to maintain θJA ≤40°C/W and ensure reliable 4A operation within this envelope.
How does the LTC4415EMSE#TRPBF achieve 15mV forward voltage regulation?
The LTC4415EMSE#TRPBF achieves 15mV regulated forward drop by dynamically modulating the gate drive to its internal PFETs (P1/P2) at low load currents - maintaining constant VFR rather than fixed RON. This regulation mode extends battery life in low-headroom systems and eliminates the voltage droop inherent in Schottky diodes, which exhibit exponential VF vs IF characteristics.
Can the LTC4415EMSE#TRPBF be used with only one channel enabled?
Yes, the LTC4415EMSE#TRPBF supports single-channel operation: tie EN1 to VIN1 to enable Diode 1, and tie EN2 to GND to disable Diode 2. Unused IN2, OUT2, CLIM2, STAT2, and WARN2 pins may be left open or grounded per datasheet guidance. Quiescent current drops to 44µA (forward) or 13µA (shutdown) in this configuration, preserving system efficiency.
What is the purpose of the fused pins (e.g., IN1 on Pins 1&2) in the LTC4415EMSE#TRPBF MSOP package?
The fused pins (IN1/IN2/OUT1/OUT2 each occupy two adjacent package leads) in the LTC4415EMSE#TRPBF MSOP package reduce trace inductance and increase current-carrying capacity per connection - critical for handling 4A continuous current without excessive heating or voltage drop. This layout also improves thermal coupling to the PCB and enhances mechanical robustness during reflow and board flexure.
How is current limiting set and monitored on the LTC4415EMSE#TRPBF?
Current limiting on the LTC4415EMSE#TRPBF is set per channel by connecting a resistor from CLIM1 or CLIM2 to GND: RCLIM = 500mV / ILIM. For example, 124Ω yields 4A limit. Monitoring is achieved by measuring VCLIM: IOUT = 1000 × VCLIM / RCLIM. This 1mA/A scaling enables direct ADC reading without external amplifiers or shunt resistors - a key advantage over discrete solutions.
LTC4415EMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PowerPath™
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-MSOP-EP
LTC4415EMSE#TRPBF FAQ
1.How can I place an order for LTC4415EMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4415EMSE#TRPBF 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 LTC4415EMSE#TRPBF reliable?
The price and inventory of LTC4415EMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4415EMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4415EMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4415EMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4415EMSE#TRPBF?
LTC4415EMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4415EMSE#TRPBF 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 LTC4415EMSE#TRPBF?
For technical support, including LTC4415EMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4415EMSE#TRPBF requirements.
6.How does Aetrix verify that LTC4415EMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4415EMSE#TRPBF 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 LTC4415EMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4415EMSE#TRPBF?
All LTC4415EMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4415EMSE#TRPBF, 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 LTC4415EMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC4415EMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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