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Analog Devices Inc. LT8410IDC-1#TRPBF
- Part No.:
- LT8410IDC-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8410IDC-1#TRPBF.pdf
- Description:
- IC REG BOOST ADJ 6MA 8DFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LT8410IDC-1#TRPBF from Analog Devices (formerly Linear Technology) is an ultralow-power boost converter IC with integrated NPN 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 in active mode, 0μA in shutdown, and an 8mA switch current limit - optimized for sensor power, RF MEMS relay bias, and low-current general-purpose biasing.
For engineers reviewing the LT8410IDC-1#TRPBF datasheet, LT8410IDC-1#TRPBF pinout, LT8410IDC-1#TRPBF application, or LT8410IDC-1#TRPBF equivalent, this page provides verified technical context, package mapping, real-world application cards, and two confirmed alternative parts with documented functional and parametric differences.
Technical Context
The LT8410IDC-1#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 12.4MΩ/0.4MΩ feedback resistor divider reduces input-referred quiescent current and enables precise output voltage setting via the FBP pin.
It integrates a comparator on the SHDN pin with 1.30V threshold and 60mV hysteresis, overvoltage protection on CAP and VOUT pins, built-in soft-start (via optional VREF-to-GND capacitor), and a dedicated PMOS disconnect switch that blocks VOUT from VIN during shutdown - critical for leakage-sensitive bias applications.
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 supply rails without external LDO pre-regulation. |
| Output Voltage Range | Up to 40V - programmable via external resistor divider on FBP pin; hard-limited to prevent overvoltage damage. |
| Switch Current Limit | 8mA (LT8410-1 variant) - lower than LT8410's 25mA, enabling smaller inductors and reduced peak stress in ultra-low-power bias designs. |
| Quiescent Current | 8.5μA active / 0μA shutdown - enables multi-year battery life in always-on sensor nodes and low-duty-cycle RF MEMS systems. |
| Reference Voltage | 1.235V (typ) at VREF - stable over temperature (±0.005V from –40°C to 125°C), used to set FBP voltage and thus final output voltage. |
| Output Disconnect | PMOS-based; 4mA current limit (LT8410-1) - isolates load from input during shutdown, eliminating reverse leakage paths in precision bias circuits. |
| Package | 8-pin 2mm × 2mm DFN with exposed thermal pad - compact footprint ideal for space-constrained IoT sensors and wearable electronics. |
Pinout & Package
LT8410IDC-1#TRPBF is housed in an 8-lead plastic DFN package (2mm × 2mm) with exposed GND pad (Pin 9), requiring soldering to PCB for thermal and EMI performance. Pin numbering follows standard top-view orientation with Pin 1 marked by notch or bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SHDN (Pin 1) | Shutdown enable input | Comparator-based logic input; <0.3V disables device, >1.45V enables; 60mV hysteresis prevents chatter near threshold. |
| VCC (Pin 2) | Main input supply | Accepts 2.5V–16V; must be locally bypassed to GND with ≥2.2μF ceramic capacitor to stabilize switching loop. |
| GND (Pin 3) | Power and signal reference | Primary ground return; connects internally to exposed pad; requires low-impedance PCB plane connection. |
| SW (Pin 4) | Switch collector node | Drives external inductor; high dv/dt node - trace length and area must be minimized to reduce EMI radiation. |
| VOUT (Pin 5) | PMOS drain output | Delivers regulated output; connects to load when enabled; disconnected from CAP/VIN during shutdown. |
| CAP (Pin 6) | Schottky cathode node | Connects to inductor and output capacitor; higher efficiency achieved when load is tied here instead of VOUT. |
| VREF (Pin 7) | Internal 1.235V reference | Source for FBP divider; soft-start controlled via external capacitor discharge/charge cycle (70μs discharge + 10μA charge). |
| FBP (Pin 8) | Error amplifier positive input | Sets output voltage: VOUT = 31.85 × VFBP; biasing directly allows dynamic voltage control or external reference injection. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 8.5μA active mode enables >10-year battery life in 10μA average-load sensor nodes. |
| Integrated output disconnect | PMOS switch isolates VOUT from input during shutdown - eliminates standby leakage in RF MEMS relays. |
| High-value internal feedback resistors | 12.4MΩ/0.4MΩ divider minimizes input-referred current, preserving battery energy in always-on bias supplies. |
| Adjustable output via FBP pin | VOUT = 31.85 × VFBP allows precise, resistor-programmable outputs from 5V to 40V without external op-amps. |
| Overvoltage protection | Hardware clamp limits VOUT and CAP to ≤40V - protects downstream components even if feedback fails. |
| Soft-start via VREF capacitor | External capacitor on VREF controls ramp rate, limiting inrush current to safe levels (<0.3A) during startup. |
Applications
| RF MEMS Relay Bias | Sensor Power Supply |
|---|---|
|
Use Scenario: Biasing RF MEMS switches requiring stable 15–30V DC with sub-10μA standby draw between actuation cycles. IC Role / Device Role / Timing Role: Ultralow-quiescent boost converter providing isolated, regulated high-voltage bias rail. Use Value: 0μA shutdown current prevents battery drain during idle; integrated disconnect avoids backfeed into source during relay deactivation. |
Use Scenario: Powering low-power analog sensors (e.g., piezoresistive pressure, thermopile IR) from coin cells or energy harvesters. IC Role / Device Role / Timing Role: Efficient step-up regulator delivering 3.3V–5V from 1.8V–3.6V sources with minimal no-load loss. Use Value: 8.5μA IQ extends shelf life of battery-powered environmental monitors; small DFN fits inside compact sensor housings. |
| Capacitor Charging Circuit | General-Purpose High-Voltage Bias |
|
Use Scenario: Charging storage capacitors (e.g., 100μF–10,000μF) to 16V for pulsed laser drivers or flash LED arrays. IC Role / Device Role / Timing Role: Controlled-current boost charger with soft-start and output disconnect to manage inrush and hold-off. Use Value: Soft-start capacitor on VREF limits peak inductor current; PMOS disconnect prevents capacitor self-discharge through input path. |
Use Scenario: Generating stable 24V–40V bias for photomultiplier tubes, CCD bias, or analog front-end instrumentation. IC Role / Device Role / Timing Role: Adjustable high-voltage bias generator with tight line/load regulation and thermal stability. Use Value: ±0.2% reference voltage drift over –40°C to 125°C ensures consistent bias across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3464EDD#TRPBF | Higher IQ (25μA), PNP-based disconnect, 85mA switch limit, 10V max input. | Better suited for higher-current, lower-input-voltage apps (e.g., 3.3V rail); lacks PMOS disconnect and 0μA shutdown. | Select LT3464EDD#TRPBF only when >10mA output current is required and input stays ≤10V. |
| LT1946AEMS8#TRPBF | 1.5A switch, 1.2MHz/2.7MHz fixed frequency, 3.2mA IQ, no integrated disconnect. | Targets high-efficiency, high-output-current DC/DC conversion; requires external MOSFET for output isolation. | Choose LT1946AEMS8#TRPBF for >100mA loads where efficiency >85% at 100mA is critical; not suitable for zero-leakage bias. |
Compared with LT8410IDC-1#TRPBF, LT3464EDD#TRPBF offers higher output current but sacrifices shutdown leakage performance and input voltage range, while LT1946AEMS8#TRPBF delivers robust power delivery but adds complexity and board space due to missing integrated disconnect and higher quiescent draw.
Availability
LT8410IDC-1#TRPBF is available at Aetrix Electronics and suitable for sensor power, RF MEMS relay bias, and general-purpose high-voltage bias applications requiring stable component supply, long-term lifecycle support, and guaranteed -40°C to +125°C operation.
Supply support for LT8410IDC-1#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 all Linear-branded parts including the LT8410 series.
The LT8410/LT8410-1 product line was designed specifically for ultralow-power, high-voltage bias generation in space- and energy-constrained systems such as wireless sensors, portable medical devices, and RF infrastructure modules.
FAQ
What is the maximum output voltage supported by the LT8410IDC-1#TRPBF?
The LT8410IDC-1#TRPBF supports up to 40V output voltage, enforced by internal overvoltage protection circuitry on both the CAP and VOUT pins. Even if the FBP pin is driven above its nominal 1.235V reference, the output will clamp at 40V to protect downstream components - a hardware-level safety feature confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables.
How does the LT8410IDC-1#TRPBF differ from the standard LT8410 version?
The LT8410IDC-1#TRPBF is the -1 variant, featuring an 8mA switch current limit (vs. 25mA for LT8410) and a 4mA PMOS disconnect current limit (vs. 19mA). These reductions optimize it for lower-power applications like sensor bias and RF MEMS, where peak current demands are modest but ultra-low quiescent current and precise shutdown behavior are essential - differences explicitly stated in the Applications Information section.
Can the LT8410IDC-1#TRPBF be used with input voltages below 2.5V?
No - the LT8410IDC-1#TRPBF has a minimum operating voltage of 2.5V (with 2.2V typical), as specified in the Electrical Characteristics table. Operation below 2.5V risks failure to start or unstable regulation; for sub-2.5V inputs, alternative solutions like the LT3464 (2.3V min) or discrete boost controllers should be evaluated using verified design data.
What is the purpose of the exposed pad (Pin 9) on the LT8410IDC-1#TRPBF DFN package?
The exposed pad (Pin 9) on the LT8410IDC-1#TRPBF is electrically connected to GND and must be soldered to the PCB ground plane. It serves dual functions: thermal dissipation (θJA = 88°C/W) and EMI shielding - both critical for stable operation in noise-sensitive bias applications. The datasheet explicitly states "EXPOSED PAD (PIN #9) IS GND, MUST BE SOLDERED TO PCB" in the Pin Configuration section.
Does the LT8410IDC-1#TRPBF support adjustable soft-start timing?
Yes - soft-start timing on the LT8410IDC-1#TRPBF is adjustable via an external capacitor connected from VREF (Pin 7) to GND. The internal 10μA current source charges this capacitor after a fixed 70μs discharge phase; selecting capacitance values from 47nF to 220nF (as recommended) sets the ramp rate and thus peak inductor current during startup - a design detail confirmed in the Soft-Start subsection of Applications Information.
LT8410IDC-1#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:
- 6mA (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)
LT8410IDC-1#TRPBF FAQ
1.How can I place an order for LT8410IDC-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8410IDC-1#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 LT8410IDC-1#TRPBF reliable?
The price and inventory of LT8410IDC-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8410IDC-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8410IDC-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8410IDC-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8410IDC-1#TRPBF?
LT8410IDC-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8410IDC-1#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 LT8410IDC-1#TRPBF?
For technical support, including LT8410IDC-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8410IDC-1#TRPBF requirements.
6.How does Aetrix verify that LT8410IDC-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8410IDC-1#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 LT8410IDC-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8410IDC-1#TRPBF?
All LT8410IDC-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8410IDC-1#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 LT8410IDC-1#TRPBF part is unused and in its original packaging.
Return procedure for LT8410IDC-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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