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Analog Devices Inc. LT8410IDC#TRMPBF
- Part No.:
- LT8410IDC#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8410IDC#TRMPBF.pdf
- Description:
- IC REG BOOST ADJ 20MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,628
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Product details
Overview
LT8410IDC#TRMPBF 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 is housed in an 8-pin 2mm × 2mm DFN package. It is designed for sensor power, RF MEMS relay bias, and general-purpose high-voltage biasing in space-constrained, battery-sensitive systems.
For engineers reviewing the LT8410IDC#TRMPBF datasheet, LT8410IDC#TRMPBF pinout, LT8410IDC#TRMPBF application, or LT8410IDC#TRMPBF equivalent, this page provides verified technical context, exact pin functions, real-world application cards, validated alternatives, and supply-chain support details specific to the I-grade industrial temperature version (–40°C to 125°C).
Technical Context
The LT8410IDC#TRMPBF 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 capacitor), and a PMOS output disconnect that blocks VOUT from VIN during shutdown - critical for system-level power sequencing and leakage control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 16V - supports single-cell Li-ion, multi-cell alkaline, and wide-input industrial rails without external LDO pre-regulation. |
| Output Voltage Range | Up to 40V - enables direct biasing of RF MEMS switches, photodiodes, and analog front-end components requiring >15V. |
| Quiescent Current | 8.5μA (active), 0μA (shutdown) - extends battery life in always-on sensor nodes and low-duty-cycle IoT endpoints. |
| Switch Current Limit | 25mA (LT8410 variant) - sets maximum inductor peak current; determines achievable output power at given VIN/VOUT ratio. |
| PMOS Disconnect Current Limit | 19mA - defines safe short-circuit current through output disconnect path during shutdown, protecting downstream loads. |
| Reference Voltage (VREF) | 1.235V (typ) - stable bandgap reference used to generate FBP voltage via external resistor divider for accurate output programming. |
| Package | 8-pin 2mm × 2mm DFN with exposed thermal pad - enables compact PCB layout and efficient heat dissipation in dense modules. |
Pinout & Package
LT8410IDC#TRMPBF is packaged in an 8-lead plastic DFN (2mm × 2mm) with exposed GND pad (Pin 9). The package meets industrial temperature grade (–40°C to 125°C) and requires soldering of the exposed pad for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SHDN (Pin 1) | Chip enable input with internal comparator | Drives <0.3V to disable; >1.45V to enable; 60mV hysteresis prevents chatter near threshold; must not be left floating. |
| VCC (Pin 2) | Main input supply connection | Accepts 2.5V–16V; requires local ceramic bypass capacitor to GND for stable operation and EMI suppression. |
| GND (Pin 3) | Power and signal reference ground | Must connect directly to low-impedance ground plane; shared return for all internal circuits and exposed pad. |
| SW (Pin 4) | Collector of internal NPN power switch | High dv/dt node; trace area must be minimized to reduce EMI; connects to inductor and Schottky anode. |
| VOUT (Pin 5) | Drain of internal PMOS output disconnect switch | Delivers regulated output; bypass capacitor required to GND for transient stability; disconnected from input in shutdown. |
| CAP (Pin 6) | Cathode of internal Schottky diode | Connects to inductor and output capacitor; lower-loss alternative to VOUT for load connection to avoid PMOS drop. |
| VREF (Pin 7) | 1.235V precision reference output | Sources 10μA for soft-start; drives external resistor divider to set FBP voltage; capacitor here controls ramp rate. |
| FBP (Pin 8) | Positive input of error amplifier | Monitors scaled output voltage; VOUT = 31.85 × VFBP; overvoltage clamped at 40V regardless of FBP level. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 8.5μA active / 0μA shutdown - enables multi-year battery life in wireless sensor nodes with infrequent wake-ups. |
| Integrated output disconnect | PMOS switch isolates VOUT from VIN during shutdown - eliminates standby leakage paths in safety-critical or power-gated subsystems. |
| Adjustable output via FBP pin | VOUT = 31.85 × VFBP, with 40V hard clamp - allows flexible bias voltage generation using only two external resistors from VREF. |
| Internal high-value feedback divider | 12.4MΩ/0.4MΩ ratio - reduces input-referred quiescent current by >10× versus external 1MΩ dividers, preserving battery energy. |
| Overvoltage protection | Active clamp on CAP and VOUT pins - prevents damage from transient overvoltage events or feedback loop faults. |
| Soft-start via VREF capacitor | 70μs discharge + 10μA charge - limits inrush current during startup, preventing overshoot and stress on output capacitors. |
Applications
| Sensor Power | RF MEMS Relay Bias |
|---|---|
|
Use Scenario: Powering low-current analog sensors (e.g., piezoresistive pressure sensors, IR thermopiles) in portable medical or environmental monitors. IC Role / Device Role / Timing Role: Generates stable 12–24V bias from 3.6V Li-ion battery; regulates output despite varying battery voltage and load transients. Use Value: 8.5μA quiescent current extends battery life beyond 5 years in 1-scan-per-hour operation; output disconnect prevents sensor self-discharge during sleep. |
Use Scenario: Driving RF MEMS switch arrays in 5G base station tunable filters and antenna beamforming networks. IC Role / Device Role / Timing Role: Supplies precise 30–40V actuation voltage with fast turn-on/turn-off; PMOS disconnect ensures zero hold voltage during idle states. Use Value: 40V absolute max output and 25mA switch limit enable reliable MEMS actuation; low noise control scheme minimizes RF interference coupling. |
| General Purpose Bias | Capacitor Charging |
|
Use Scenario: Providing programmable high-voltage bias (5–34V) for op-amp rails, CCD clocks, or photomultiplier tubes in test equipment. IC Role / Device Role / Timing Role: Adjustable output via FBP resistor divider; soft-start prevents inrush into large capacitive loads; wide VIN accommodates varied supply sources. Use Value: 31.85× gain factor and 1.235V VREF allow ±1% output accuracy; 2mm × 2mm DFN saves board space vs. discrete boost solutions. |
Use Scenario: Charging high-value storage capacitors (e.g., 10,000µF) in pulsed laser drivers or defibrillator energy delivery circuits. IC Role / Device Role / Timing Role: Delivers controlled current to bulk capacitance; PMOS disconnect isolates charged cap from input during standby; inrush limited by soft-start. Use Value: 25mA switch limit and 19mA PMOS limit define safe charge current envelope; shutdown IQ = 0μA eliminates standby drain on backup batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8410EDC#TRPBF | E-grade (0°C to 125°C) vs. I-grade (–40°C to 125°C); identical electrical specs and pinout. | Not suitable for extended cold environments (e.g., outdoor industrial sensors, automotive under-hood). | Select LT8410IDC#TRMPBF when guaranteed operation below 0°C is required; use E-grade only for commercial-temperature applications. |
| LT8410-1IDC#TRPBF | Lower 8mA switch limit and 4mA PMOS disconnect limit vs. 25mA/19mA in LT8410IDC#TRMPBF. | Better suited for ultra-low-power loads (<1mA), but cannot drive higher-current RF MEMS or capacitor charging. | Choose LT8410-1IDC#TRPBF only when load current is ≤0.5mA and lower peak inductor current is acceptable. |
Compared with LT8410EDC#TRPBF, the LT8410IDC#TRMPBF guarantees full –40°C functionality for harsh environments; compared with LT8410-1IDC#TRPBF, it delivers 3× higher output current capability for demanding bias and actuation tasks.
Availability
LT8410IDC#TRMPBF is available at Aetrix Electronics and suitable for sensor power, RF MEMS relay bias, and general-purpose high-voltage biasing requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LT8410IDC#TRMPBF 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 its legacy of high-performance analog and power management ICs with rigorous reliability testing and long-term product support.
The LT8410 series belongs to Linear's ultralow-power DC/DC converter product line, engineered specifically for battery-powered instrumentation, wireless sensing, and precision biasing where quiescent current, shutdown isolation, and small footprint are primary design constraints.
FAQ
What is the operating temperature range for LT8410IDC#TRMPBF?
The LT8410IDC#TRMPBF is rated for –40°C to 125°C junction temperature and is guaranteed over this full industrial temperature range. This makes it suitable for deployment in automotive cabin modules, outdoor industrial sensors, and telecom infrastructure where ambient extremes are expected. The "I" suffix explicitly denotes industrial-grade qualification.
How does the output disconnect function work in LT8410IDC#TRMPBF?
In LT8410IDC#TRMPBF, the PMOS output disconnect switch connects VOUT to the load when enabled and opens completely during shutdown, blocking current flow from input to output. This prevents reverse leakage and ensures true zero-load current draw - critical for battery-backed systems. The PMOS current limit is 19mA, protecting against output shorts.
Can LT8410IDC#TRMPBF generate 34V output? What external components are needed?
Yes, LT8410IDC#TRMPBF supports up to 40V output; a 34V design uses R1 = 133kΩ and R2 = 866kΩ from VREF to FBP. Required external parts include a 150µH shielded inductor (e.g., Coilcraft LPS3314-154ML), 0.1µF 100V X5R capacitors on CAP and VOUT, and 2.2µF input capacitor. Layout must minimize SW node area.
What is the purpose of the VREF pin capacitor in LT8410IDC#TRMPBF?
The capacitor on the VREF pin (typically 47nF–220nF) enables soft-start in LT8410IDC#TRMPBF: it is discharged for 70µs at startup, then charged by a 10μA current source to 1.235V, ramping FBP and thus VOUT gradually. This limits inrush current, prevents output overshoot, and avoids stressing the output capacitor or load during power-up.
Is LT8410IDC#TRMPBF pin-compatible with LT8410-1IDC#TRPBF?
Yes, LT8410IDC#TRMPBF and LT8410-1IDC#TRPBF share identical 8-pin DFN packaging, pinout, and footprint. However, they differ electrically: LT8410IDC#TRMPBF has 25mA switch and 19mA PMOS limits, while LT8410-1IDC#TRPBF has 8mA and 4mA limits. Swapping requires verifying load current compatibility.
LT8410IDC#TRMPBF 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)
LT8410IDC#TRMPBF FAQ
1.How can I place an order for LT8410IDC#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8410IDC#TRMPBF 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#TRMPBF reliable?
The price and inventory of LT8410IDC#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8410IDC#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT8410IDC#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8410IDC#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8410IDC#TRMPBF?
LT8410IDC#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8410IDC#TRMPBF 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#TRMPBF?
For technical support, including LT8410IDC#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8410IDC#TRMPBF requirements.
6.How does Aetrix verify that LT8410IDC#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT8410IDC#TRMPBF 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#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT8410IDC#TRMPBF?
All LT8410IDC#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8410IDC#TRMPBF, 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#TRMPBF part is unused and in its original packaging.
Return procedure for LT8410IDC#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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