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Analog Devices Inc. LT8410EDC#TRPBF
- Part No.:
- LT8410EDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8410EDC#TRPBF.pdf
- Description:
- IC REG BOOST ADJ 20MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:856
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Product details
Overview
LT8410EDC#TRPBF from Analog Devices (formerly Linear Technology) is an ultralow-power boost converter IC with integrated NPN power switch, Schottky diode, and PMOS output disconnect circuitry. It operates from 2.5V to 16V input, delivers up to 40V output, features 8.5μA quiescent current, 25mA switch current limit, and resides in a 2mm × 2mm 8-pin DFN package. It is used in sensor biasing and RF MEMS relay power supplies where low standby consumption and output isolation during shutdown are critical.
For engineers reviewing the LT8410EDC#TRPBF datasheet, LT8410EDC#TRPBF pinout, LT8410EDC#TRPBF application, or LT8410EDC#TRPBF equivalent, key selection considerations include its 8.5μA active quiescent current, integrated 12.4MΩ/0.4MΩ feedback divider, adjustable output via FBP pin, soft-start capability using VREF capacitor, and output disconnect functionality blocking VOUT from VIN during shutdown.
Technical Context
The LT8410EDC#TRPBF employs a variable peak inductor current and variable off-time control scheme to maintain high efficiency across wide load ranges while minimizing output voltage ripple. Its internal architecture includes a precision 1.235V reference, error amplifier with FBP as positive input, timing and peak-current control block, and dedicated output disconnect PMOS gate driver.
It integrates high-value on-chip feedback resistors (12.4MΩ/0.4MΩ), enabling ultra-low input-referred quiescent current. The SHDN pin contains a comparator with 1.30V threshold and 60mV hysteresis, allowing programmable enable/disable logic via external resistor networks - critical for battery-powered systems requiring precise wake-up conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 16V - supports single-cell Li-ion, multi-cell alkaline, and industrial 12V rails without external regulation. |
| Output Voltage Range | Up to 40V - enables direct biasing of high-voltage sensors and RF MEMS switches without external charge pumps. |
| Quiescent Current | 8.5μA (active), 0μA (shutdown) - extends battery life in always-on sensor nodes and IoT edge devices. |
| Switch Current Limit | 25mA - sets maximum inductor peak current; determines power delivery capability and inductor sizing. |
| Reference Voltage | 1.235V (typ) - stable internal reference used to set output via external resistor divider on FBP pin. |
| Package | 8-pin 2mm × 2mm DFN - compact footprint ideal for space-constrained portable and wearable electronics. |
| Operating Temp | –40°C to 125°C - qualified for automotive cabin, industrial control, and outdoor sensor environments. |
Pinout & Package
LT8410EDC#TRPBF is housed in an 8-lead plastic DFN package (2mm × 2mm) with exposed thermal pad (Pin 9, GND). The package requires soldering of the exposed pad to PCB ground plane for thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SHDN (Pin 1) | Shutdown enable input | Comparator-based input with 1.30V threshold and 60mV hysteresis; drives device into 0μA shutdown when <0.3V. |
| VCC (Pin 2) | Main input supply | Accepts 2.5V–16V; must be locally bypassed to GND with ≥2.2μF ceramic capacitor. |
| GND (Pin 3) | Power and signal ground | Primary return path; connects to exposed pad (Pin 9) - must be solidly tied to PCB ground plane. |
| SW (Pin 4) | Switch collector node | Drives external inductor; high dv/dt node - minimize trace area to reduce EMI radiation. |
| VOUT (Pin 5) | PMOS drain output | Delivers regulated output; internal PMOS disconnect isolates load from input during shutdown. |
| CAP (Pin 6) | Schottky cathode node | Connects to inductor and output capacitor; lower-loss alternative connection point for loads to bypass PMOS drop. |
| VREF (Pin 7) | Internal 1.235V reference | Source of 10μA current for soft-start; capacitor here controls output ramp rate and limits inrush. |
| FBP (Pin 8) | Error amp positive input | Sets output voltage via resistor divider (VOUT = 31.85 × VFBP); also accepts external reference for dynamic control. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 8.5μA active / 0μA shutdown enables >10-year battery life in low-duty-cycle sensor nodes. |
| Integrated output disconnect | PMOS switch blocks VOUT from VIN during shutdown - prevents backfeed and ensures true zero-load leakage. |
| On-chip high-value feedback resistors | 12.4MΩ/0.4MΩ divider reduces input-referred quiescent current and eliminates two external components. |
| Adjustable output via FBP pin | VOUT = 31.85 × VFBP allows precise setting from ~4V to 40V using standard resistor values or external references. |
| Built-in soft-start | VREF pin capacitor (47nF–220nF) controls output ramp rate, limiting inrush and peak inductor current at startup. |
Applications
| RF MEMS Relay Power | Sensor Bias Supply |
|---|---|
Use Scenario: Powering RF MEMS switches in reconfigurable antenna arrays or front-end modules requiring fast, isolated high-voltage bias (e.g., 24–40V) with minimal standby drain. IC Role / Device Role / Timing Role: Boost converter with output disconnect - generates stable high-side bias and fully isolates load during sleep mode. Use Value: Enables microamp-level system sleep current; eliminates need for external high-voltage MOSFET disconnect and associated gate drive complexity. | Use Scenario: Providing stable, low-noise bias voltage to analog sensors (e.g., piezoresistive pressure, IR thermopile) in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Ultralow-IQ DC/DC bias generator - maintains sensor operating point with <10μA overhead during measurement intervals. Use Value: Extends coin-cell lifetime beyond 5 years in wireless sensor nodes; integrated feedback resistors prevent parasitic loading of sensitive analog circuits. |
| Capacitor Charging Circuit | Low-Power Industrial Sensor Node |
Use Scenario: Charging hold capacitors for sample-and-hold circuits or energy harvesting storage elements in intermittent-operation systems. IC Role / Device Role / Timing Role: Controlled-current boost charger - regulates charging rate via soft-start and peak-current limiting to avoid inrush damage. Use Value: Eliminates discrete charge pump + LDO solution; built-in soft-start (via VREF cap) prevents overshoot and ensures safe capacitor pre-charge. | Use Scenario: Powering mixed-signal sensor subsystems (ADC, MCU, transceiver) in industrial condition monitoring nodes deployed in remote locations. IC Role / Device Role / Timing Role: Primary bias rail generator - delivers 16V or 34V from wide-input 2.5–16V sources (e.g., solar harvester, 4–20mA loop, backup battery). Use Value: Single-chip solution replaces multi-stage discrete designs; 125°C rating supports operation inside enclosures near motors or power electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8410EDC-1#TRPBF | Lower 8mA switch current limit and 4mA PMOS disconnect limit vs. 25mA/19mA in LT8410EDC#TRPBF; identical pinout and control architecture. | Better suited for sub-mA output loads (e.g., micropower op-amps, low-leakage sensors); reduced thermal stress at light loads. | Select LT8410EDC-1#TRPBF when max output current ≤1mA and lowest possible no-load dissipation is required. |
| LT3464EDD#TRPBF | Higher 85mA switch limit, 2.3–10V input range, 25μA IQ, ThinSOT-6 package; lacks integrated output disconnect and high-value feedback resistors. | Targeted at higher-output-current applications (e.g., white LED drivers); requires external disconnect MOSFET and feedback resistors. | Choose LT3464EDD#TRPBF only if >5mA output current is needed and board space permits added discretes for disconnect and feedback. |
Compared with LT8410EDC-1#TRPBF, the LT8410EDC#TRPBF delivers 3× higher output current capability and superior efficiency above 0.5mA load, while retaining identical footprint and control interface; versus LT3464EDD#TRPBF, it trades raw current capacity for integrated disconnect, ultra-low IQ, and component count reduction - making it optimal for precision, battery-critical biasing.
Availability
LT8410EDC#TRPBF is available at Aetrix Electronics and suitable for RF MEMS power, sensor biasing, and low-power industrial sensor nodes requiring stable component supply, long-lifecycle assurance, and guaranteed parametric compliance over –40°C to 125°C.
Supply support for LT8410EDC#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 and maintains full product support, documentation, and manufacturing continuity for the LT8410 family.
The LT8410 series was designed specifically for ultralow-power, high-voltage bias generation in battery-operated sensing and RF infrastructure - emphasizing minimal quiescent current, integrated protection, and simplified layout in miniature DFN packages.
FAQ
What is the maximum output voltage supported by the LT8410EDC#TRPBF?
The LT8410EDC#TRPBF supports up to 40V output voltage, enforced by internal overvoltage protection on the CAP and VOUT pins. Even if the FBP pin voltage is driven above the reference, the output clamps at 40V - ensuring safe operation for high-voltage sensor biasing without external zener clamping.
How does the LT8410EDC#TRPBF achieve ultralow quiescent current?
The LT8410EDC#TRPBF achieves 8.5μA active quiescent current through integrated high-value feedback resistors (12.4MΩ/0.4MΩ), a low-power oscillator, and optimized biasing. In shutdown, it draws 0μA by disabling all internal circuitry - a feature confirmed in the Electrical Characteristics table under "Quiescent Current in Shutdown".
Can the LT8410EDC#TRPBF be used to power loads directly from the CAP pin?
Yes - connecting the load to the CAP pin instead of VOUT bypasses the internal PMOS disconnect switch, eliminating its conduction loss and reducing no-load current. However, during shutdown, the CAP node remains ~0.7V below VCC due to the Schottky diode drop, so true ground isolation is only achieved when loading from VOUT.
What is the purpose of the capacitor on the VREF pin of the LT8410EDC#TRPBF?
The capacitor on the VREF pin of the LT8410EDC#TRPBF implements soft-start: at power-up, it is discharged for 70μs, then charged by a 10μA current source to 1.235V. This linear ramp controls the FBP voltage rise, limiting inrush current and peak inductor current - critical for reliable startup into large output capacitors.
Does the LT8410EDC#TRPBF require external feedback resistors?
No - the LT8410EDC#TRPBF integrates a 12.4MΩ/0.4MΩ resistor divider from VOUT to FBP, significantly reducing input-referred quiescent current and eliminating two external components. External resistors are only needed if custom output voltage scaling or dynamic control via FBP is required beyond the default 31.85:1 ratio.
LT8410EDC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.235V
- Voltage - Output (Max):
- 40V (Switch)
- Current - Output:
- 20mA (Switch)
- Frequency - Switching:
- -
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
LT8410EDC#TRPBF FAQ
1.How can I place an order for LT8410EDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8410EDC#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 LT8410EDC#TRPBF reliable?
The price and inventory of LT8410EDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8410EDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8410EDC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8410EDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8410EDC#TRPBF?
LT8410EDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8410EDC#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 LT8410EDC#TRPBF?
For technical support, including LT8410EDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8410EDC#TRPBF requirements.
6.How does Aetrix verify that LT8410EDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8410EDC#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 LT8410EDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8410EDC#TRPBF?
All LT8410EDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8410EDC#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 LT8410EDC#TRPBF part is unused and in its original packaging.
Return procedure for LT8410EDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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