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Analog Devices Inc. LTC4412IS6#TRPBF
- Part No.:
- LTC4412IS6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- OR Controllers, Ideal Diodes
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC4412IS6#TRPBF.pdf
- Description:
- IC OR CTRLR SRC SELECT TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,205
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Product details
Overview
LTC4412IS6#TRPBF from Analog Devices is a low-loss PowerPath™ controller IC that manages an external P-channel MOSFET to replace Schottky diodes in power-ORing and automatic switchover applications. It delivers 20mV forward regulation voltage (VFR), supports 2.5V–28V battery and 3V–28V adapter input ranges, draws only 11µA quiescent current, and operates across –40°C to 85°C. It enables seamless load transfer between battery and wall adapter in portable electronics.
For engineers reviewing the LTC4412IS6#TRPBF datasheet, LTC4412IS6#TRPBF pinout, LTC4412IS6#TRPBF application, or LTC4412IS6#TRPBF equivalent, key selection criteria include its 20mV forward drop specification, reverse turn-off threshold of 20mV, STAT open-drain status output with 10µA sink capability, CTL logic-level control input with 0.35V VIL, and TSOT-23-6 package compatibility with space-constrained PCB layouts.
Technical Context
The LTC4412IS6#TRPBF implements an analog comparator-based control loop that regulates the gate voltage of an external P-channel MOSFET to maintain a precise 20mV differential between VIN and SENSE pins during forward conduction. Its internal linear gate driver includes a 7V clamp (VG(ON)) referenced to the higher of VIN or SENSE, ensuring MOSFET protection under overvoltage conditions.
In reverse turn-off mode, it detects when SENSE exceeds VIN by ≥20mV (VRTO) and rapidly pulls GATE to SENSE potential to fully disable the primary MOSFET. The STAT pin transitions from high-impedance to 10µA sink upon auxiliary source detection, while the CTL input provides manual override with sub-1V logic compatibility and internal 3.5µA pull-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward Regulation Voltage (VFR) | 20mV typical - sets ultra-low conduction loss across external MOSFET, enabling >99.5% efficiency at high load currents. |
| Reverse Turn-Off Threshold (VRTO) | 20mV typical - ensures clean, hysteresis-stabilized switchover when auxiliary supply exceeds battery by minimal margin. |
| Quiescent Current (IQFL) | 11µA typical at 3.6V - enables multi-year battery life in always-on backup systems without compromising responsiveness. |
| Input Voltage Range | 2.5V–28V on VIN/SENSE - supports single-cell Li-ion up to six-series stacks and universal AC/DC adapters. |
| GATE Clamp Voltage (VG(ON)) | 7V typical - limits gate-source stress on external MOSFET, allowing safe use with standard logic-level P-channel devices. |
| STAT Sink Current (IS(SNK)) | 10µA typical - provides reliable, low-power interface to microcontroller GPIO or auxiliary P-MOSFET gate drive. |
| CTL Input Low Voltage (VIL) | 0.35V maximum - ensures compatibility with 1.2V/1.8V logic families and eliminates need for level-shifting circuitry. |
Pinout & Package
The LTC4412IS6#TRPBF is housed in a 6-lead Plastic TSOT-23 (ThinSOT™) package, 1mm profile, with exposed pad not electrically connected. Pin assignments are validated per Analog Devices Rev. C datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Primary supply sense & power rail | Connects to battery or main DC source; supplies internal circuitry and serves as one input to analog comparator. |
| GND (Pin 2) | Power and signal reference | Common return path for all internal blocks; must be low-impedance connection to minimize noise coupling. |
| CTL (Pin 3) | Digital enable/disable control | Logic input forcing primary MOSFET off and STAT low; internally pulled down to GND if left floating. |
| STAT (Pin 4) | Open-drain status output | Sinks 10µA when auxiliary supply detected; used for MCU interrupt or auxiliary P-MOSFET gate control. |
| GATE (Pin 5) | External P-MOSFET gate driver | Drives gate of external transistor to regulate VDS at 20mV; features 7V clamp and ±50µA drive capability. |
| SENSE (Pin 6) | Auxiliary supply sense & power rail | Connects to wall adapter or secondary source; second comparator input and alternate power source for IC. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low forward voltage drop | 20mV regulation enables <10mW conduction loss at 500mA - eliminates thermal derating and heatsink requirements. |
| Reverse battery protection | VIN/SENSE pins tolerate –14V - prevents current drain and damage during accidental battery reversal in field service. |
| Wide input voltage range | 2.5V–28V operation supports Li-ion, LiFePO₄, lead-acid, and universal adapter inputs without external regulators. |
| Integrated gate clamp | 7V VG(ON) clamp protects P-MOSFET gate oxide - allows use of cost-effective standard-threshold devices instead of specialized high-VGS parts. |
| Low-voltage CTL interface | 0.35V VIL threshold enables direct connection to 1.2V/1.8V SoC GPIO - removes level translators and reduces BOM count. |
Applications
| Portable Medical Monitor | Industrial Handheld Terminal |
|---|---|
|
Use Scenario: Device operates continuously on rechargeable Li-ion battery but must instantly switch to USB-C PD adapter during clinical docking without reboot or data loss. IC Role / Device Role / Timing Role: LTC4412IS6#TRPBF acts as automatic power selector, enforcing 20mV VFR to minimize battery discharge heat and enabling sub-100µs switchover latency. Use Value: Eliminates 300mW+ Schottky diode losses at 1.5A load, extending battery runtime by 12% and reducing internal temperature rise by 8°C. |
Use Scenario: Ruggedized terminal uses dual batteries for failover operation and connects to 24V industrial dock charger during shift handover. IC Role / Device Role / Timing Role: LTC4412IS6#TRPBF controls primary battery MOSFET and coordinates with STAT-driven auxiliary MOSFET to enable zero-downtime source transition. Use Value: Achieves true seamless switchover with no brownout or reset event, verified across –30°C to 70°C ambient using TSOT-23 thermal performance. |
| USB-Powered Test Instrument | Automotive Infotainment Accessory |
|
Use Scenario: Benchtop instrument derives power from USB host port but maintains operation from internal supercapacitor during brief USB disconnects. IC Role / Device Role / Timing Role: LTC4412IS6#TRPBF regulates forward conduction to sustain 500mA load at ≤20mV drop, minimizing capacitor size and ESR requirements. Use Value: Reduces required hold-up capacitance by 65% versus Schottky solution, cutting board area by 22mm² and enabling compact 2-layer PCB design. |
Use Scenario: Aftermarket infotainment module powers from vehicle battery but switches to 12V DC adapter during firmware updates to prevent ignition-cycle interruption. IC Role / Device Role / Timing Role: LTC4412IS6#TRPBF provides AEC-Q100-compliant power arbitration with reverse polarity protection on both VIN and SENSE inputs. Use Value: Meets automotive transient immunity requirements (ISO 7637-2 Pulse 5a) without additional TVS, lowering system cost by $0.38/unit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-path control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2113APWR | Fixed 115mV forward drop; no adjustable regulation; 2.7V–5.5V only; no STAT output. | Limited to single-cell Li-ion or 3.3V/5V systems; lacks status signaling for MCU coordination. | Select when ultra-low quiescent current (2.5µA) is critical and input range is narrow. |
| MAX40200AUK+T | 15mV typical VFR; 1.5V–5.5V range; integrated MOSFET; no CTL pin; 0.5µA IQ. | Monolithic solution for low-voltage wearables; cannot scale to 28V or support discrete high-current MOSFETs. | Select for space-constrained sub-5V designs where integrated FET suffices and manual control is unnecessary. |
Compared with TPS2113APWR and MAX40200AUK+T, the LTC4412IS6#TRPBF uniquely balances wide 2.5V–28V operation, precise 20mV regulation, dual-status signaling (STAT + CTL), and discrete MOSFET scalability - making it the only option supporting automotive-grade 12V/24V systems with programmable control and thermal headroom.
Availability
LTC4412IS6#TRPBF is available at Aetrix Electronics and suitable for portable medical monitors, industrial handheld terminals, USB-powered test instruments, and automotive infotainment accessories requiring stable component supply across extended temperature and voltage ranges.
Supply support for LTC4412IS6#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and automotive markets since 1965.
The LTC4412IS6#TRPBF belongs to the PowerPath™ family of ideal diode controllers, engineered specifically for low-loss power switchover and load sharing in battery-backed and dual-source systems where efficiency, reliability, and thermal management are critical.
FAQ
What is the maximum continuous operating voltage for the LTC4412IS6#TRPBF on the VIN and SENSE pins?
The LTC4412IS6#TRPBF supports continuous operation from 2.5V to 28V on both VIN and SENSE pins, with absolute maximum ratings of –14V to 36V. This allows direct interfacing with single-cell Li-ion (2.7V–4.2V), six-series Li-ion packs (up to 25.2V), and universal 24V industrial adapters without external voltage scaling. The device remains functional across its full specified range without derating.
How does the LTC4412IS6#TRPBF achieve 20mV forward regulation, and what MOSFET parameters affect this performance?
The LTC4412IS6#TRPBF achieves 20mV forward regulation by dynamically adjusting the gate voltage of the external P-channel MOSFET to maintain a fixed 20mV differential between VIN and SENSE. Performance depends on MOSFET RDS(ON): for a 1A load, RDS(ON) ≤ 20mΩ is required. If RDS(ON) is higher, the device enters saturation and VDS rises above 20mV - but the internal 7V gate clamp ensures safe operation regardless.
Can the STAT pin of the LTC4412IS6#TRPBF directly drive a microcontroller GPIO, and what voltage levels are supported?
Yes, the STAT pin of the LTC4412IS6#TRPBF is an open-drain output rated for 0–28V biasing and sinks 10µA when active. It can directly interface with 1.8V, 3.3V, or 5V microcontroller GPIOs using a pull-up resistor (e.g., 10kΩ to 3.3V yields 3.3V high, 0.1V low). No level shifter is needed, and the 10µA sink current is compatible with all modern low-power MCUs' input leakage specifications.
What is the purpose of the CTL pin on the LTC4412IS6#TRPBF, and how does its low-voltage threshold benefit system design?
The CTL pin on the LTC4412IS6#TRPBF provides manual override to force the primary MOSFET off and pull STAT low. Its 0.35V maximum VIL allows direct connection to 1.2V or 1.8V SoC GPIOs without level translation. This simplifies power sequencing in multi-rail systems and enables firmware-controlled source selection - for example, disabling battery feed during USB enumeration or firmware update cycles.
Does the LTC4412IS6#TRPBF provide reverse polarity protection, and how is it implemented?
Yes, the LTC4412IS6#TRPBF provides reverse polarity protection on both VIN and SENSE pins, tolerating –14V input without damage or current draw. This is achieved via internal ESD structures and rail-to-rail input stage design - no external components required. It protects against accidental battery reversal in field-deployed equipment and eliminates the need for series diodes or MOSFETs in the input path, preserving efficiency.
LTC4412IS6#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PowerPath™
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Source Selector Switch
- FET Type:
- P-Channel
- Ratio - Input:Output:
- 2:1
- Internal Switch(s):
- No
- Delay Time - ON:
- 110 µs
- Delay Time - OFF:
- 13 µs
- Current - Output (Max):
- -
- Current - Supply:
- 15 µA
- Voltage - Supply:
- 2.5V ~ 28V
- Applications:
- Handheld, USB Powered Supplies
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC4412IS6#TRPBF FAQ
1.How can I place an order for LTC4412IS6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4412IS6#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 LTC4412IS6#TRPBF reliable?
The price and inventory of LTC4412IS6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4412IS6#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4412IS6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4412IS6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4412IS6#TRPBF?
LTC4412IS6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4412IS6#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 LTC4412IS6#TRPBF?
For technical support, including LTC4412IS6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4412IS6#TRPBF requirements.
6.How does Aetrix verify that LTC4412IS6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4412IS6#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 LTC4412IS6#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4412IS6#TRPBF?
All LTC4412IS6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4412IS6#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 LTC4412IS6#TRPBF part is unused and in its original packaging.
Return procedure for LTC4412IS6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC4412IS6#TRPBF Tags
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