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Analog Devices Inc. LT8410EDC-1#TRPBF
- Part No.:
- LT8410EDC-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8410EDC-1#TRPBF.pdf
- Description:
- IC REG BOOST ADJ 6MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:235
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Product details
Overview
LT8410EDC-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. It delivers up to 40V output from 2.5V–16V input, features 8.5μA quiescent current, 8mA switch current limit, and operates in a 2mm × 2mm DFN package. It is designed for sensor power, RF MEMS relay bias, and low-current general-purpose biasing.
For engineers reviewing the LT8410EDC-1#TRPBF datasheet, LT8410EDC-1#TRPBF pinout, LT8410EDC-1#TRPBF application, or LT8410EDC-1#TRPBF equivalent, this page provides verified technical context, exact pin functions, real-world application cards, confirmed alternative parts, and supply-chain support details specific to the LT8410EDC-1#TRPBF variant.
Technical Context
The LT8410EDC-1#TRPBF implements 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 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 dedicated PMOS disconnect switch rated for 4mA continuous current - distinguishing it from the LT8410 (19mA disconnect limit).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 16V - supports wide-supply industrial and battery-powered systems without external regulation. |
| Output Voltage Range | Up to 40V - enables biasing of high-voltage sensors, RF MEMS relays, and analog front-ends. |
| Switch Current Limit | 8mA (typ.) - defines maximum inductor peak current; lower than LT8410's 25mA, suited for ultra-low-power loads. |
| Quiescent Current | 8.5μA (active), 0μA (shutdown) - preserves battery life in always-on sensor nodes and standby circuits. |
| Reference Voltage | 1.235V (typ.) - stable bandgap reference used to set output via external resistor divider from VREF to FBP. |
| Output Disconnect Current | 4mA (max) - limits fault current during shutdown; prevents backfeed from VOUT to input when disabled. |
| Package | 8-pin 2mm × 2mm DFN - compact footprint ideal for space-constrained IoT and portable electronics. |
Pinout & Package
LT8410EDC-1#TRPBF uses an 8-lead plastic DFN package (2mm × 2mm) with exposed thermal pad (Pin 9, GND). The exposed pad must be soldered to PCB ground for thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SHDN (Pin 1) | Shutdown enable input | Comparator-based logic input; <0.3V disables IC, >1.45V enables; 60mV hysteresis prevents chatter. |
| VCC (Pin 2) | Main power input | Supplies internal circuitry; requires local 2.2μF ceramic bypass capacitor to GND. |
| GND (Pin 3) | Power and signal ground | Primary return path; connects to exposed pad (Pin 9) for low-impedance grounding. |
| SW (Pin 4) | Switch collector node | Drives external inductor; high dV/dt node-minimize trace area to reduce EMI. |
| VOUT (Pin 5) | PMOS drain output | Delivers regulated output; connect 0.1–1μF ceramic capacitor to GND for stability and transient response. |
| CAP (Pin 6) | Schottky cathode node | Connects to inductor and Schottky anode; place 0.1–1μF capacitor here to filter switching ripple. |
| VREF (Pin 7) | Internal 1.235V reference output | Provides precision reference; soft-start achieved by adding 47nF–220nF capacitor to GND. |
| FBP (Pin 8) | Error amplifier positive input | Sets output voltage: VOUT = 31.85 × VFBP; bias via resistor divider from VREF or external reference. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 8.5μA active / 0μA shutdown - extends battery life in energy-harvesting and remote sensor applications. |
| Integrated output disconnect | PMOS switch blocks VOUT from input during shutdown - eliminates leakage paths in powered-off subsystems. |
| High-value internal feedback resistors | 12.4MΩ/0.4MΩ divider - reduces input-referred quiescent current and simplifies external component count. |
| Overvoltage protection | Hardware clamp limits CAP and VOUT to ≤40V - protects downstream circuitry from regulator faults or misconfiguration. |
| Soft-start via VREF capacitor | 70μs discharge + 10μA charge cycle - controls VOUT ramp rate and suppresses inrush current during startup. |
Applications
| Sensor Power Supply | RF MEMS Relay Bias |
|---|---|
|
Use Scenario: Powering low-current analog sensors (e.g., piezoresistive pressure, thermopile IR) in battery-operated condition monitoring nodes. IC Role / Device Role / Timing Role: Boost converter providing stable 5–24V bias from single Li-ion or coin cell; output disconnect isolates sensor during sleep mode. Use Value: 8.5μA quiescent current minimizes standby drain; 8mA switch limit matches typical sensor bias currents (<1mA), avoiding overdesign. |
Use Scenario: Generating 20–40V hold voltage for RF MEMS switches in reconfigurable antenna or front-end modules. IC Role / Device Role / Timing Role: High-voltage, low-quiescent boost source with fast enable/disable via SHDN pin for MEMS actuation timing control. Use Value: 40V absolute max output and integrated OVP ensure safe MEMS coil drive; 60mV SHDN hysteresis prevents false toggling during noisy RF environments. |
| Low-Power Analog Bias | Capacitor Charging Circuit |
|
Use Scenario: Providing clean, adjustable bias voltage (e.g., 12V, 15V, 30V) for op-amp rails, ADC references, or DAC buffers in portable instrumentation. IC Role / Device Role / Timing Role: Precision-adjustable boost regulator using FBP feedback; VREF pin enables soft-start and noise filtering. Use Value: 1.235V reference tolerance (±1.2%) and 31.85× gain yield <1% output error; low noise control scheme avoids interference with sensitive analog signals. |
Use Scenario: Charging high-value storage capacitors (e.g., 10,000μF) in energy-buffering circuits for pulsed loads like laser diodes or flash LEDs. IC Role / Device Role / Timing Role: Controlled-current charger using LT8410EDC-1#TRPBF's fixed 8mA switch limit and PMOS disconnect to manage charge rate and isolation. Use Value: Predictable peak inductor current (IPK ≈ ILIMIT + VIN·150µ/L) enables deterministic charge time estimation; shutdown disconnect prevents capacitor self-discharge through IC. |
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 | 25mA switch current limit, 19mA output disconnect limit - higher output capability but ~3× higher quiescent current under light load due to larger internal switch. | Better suited for loads requiring >1mA continuous output; less optimal for sub-100μA system-level standby budgets. | Select LT8410EDC#TRPBF when higher output current (e.g., >1.5mA) or faster capacitor charging is required; verify thermal margin in 2mm × 2mm layout. |
| LT3464ES6#TRMPBF | 85mA switch limit, 25μA quiescent current, ThinSOT-6 package - higher power, higher IQ, different pinout and control architecture (constant-frequency PWM). | Targeted at higher-current DC-DC needs (e.g., white LED drivers); lacks integrated output disconnect and high-ratio feedback divider. | Choose LT3464ES6#TRMPBF only if >10mA output is needed and board space allows larger inductor; not drop-in - requires redesign of feedback, compensation, and layout. |
Compared with LT8410EDC#TRPBF, the LT8410EDC-1#TRPBF trades output current headroom for ultralow IQ and tighter shutdown isolation - making it superior for micro-power sensor bias. Versus LT3464ES6#TRMPBF, it offers true zero-IQ shutdown and integrated disconnect but cannot scale to higher loads without external components.
Availability
LT8410EDC-1#TRPBF is available at Aetrix Electronics and suitable for sensor power, RF MEMS relay bias, and low-power analog bias applications requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across temperature.
Supply support for LT8410EDC-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 the LT8410 family.
The LT8410 series was designed specifically for ultralow-power, high-voltage bias generation in space- and energy-constrained systems - emphasizing minimal quiescent current, integrated protection, and simplified external component count.
FAQ
What is the maximum output voltage supported by the LT8410EDC-1#TRPBF?
The LT8410EDC-1#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 1.235V, the output will clamp at 40V. This hard limit ensures safe operation with high-voltage loads such as RF MEMS relays or precision analog bias networks.
How does the LT8410EDC-1#TRPBF differ from the standard LT8410EDC#TRPBF?
The LT8410EDC-1#TRPBF differs from LT8410EDC#TRPBF primarily in its lower switch current limit (8mA vs. 25mA) and reduced output disconnect PMOS current limit (4mA vs. 19mA). These reductions enable tighter control of peak inductor current and lower quiescent current under light loads, making the LT8410EDC-1#TRPBF optimized for sub-mA applications where efficiency at nanoamp standby matters most.
Can the LT8410EDC-1#TRPBF be used to charge large capacitors?
Yes - the LT8410EDC-1#TRPBF can charge large capacitors, as demonstrated in Figure 5 of its datasheet using a 10,000μF electrolytic. Its fixed 8mA switch limit and controlled start-up (via VREF capacitor) allow predictable charge rates. However, output disconnect remains active during shutdown, preventing capacitor self-discharge through the IC - a key advantage over non-disconnect boosters.
What is the purpose of the exposed pad (Pin 9) on the LT8410EDC-1#TRPBF?
The exposed pad (Pin 9) on the LT8410EDC-1#TRPBF is electrically connected to GND and must be soldered to the PCB ground plane. It serves dual purposes: improving thermal dissipation to maintain junction temperature below 125°C, and reducing EMI by providing a low-inductance return path for high-frequency switching currents from the SW and CAP pins.
Does the LT8410EDC-1#TRPBF require external compensation components?
No - the LT8410EDC-1#TRPBF uses a proprietary variable-frequency, variable-off-time control architecture that does not require external compensation components. Stability is inherent across its operating range, simplifying design for applications like sensor bias where minimal external parts are critical. Layout best practices (e.g., short SW traces, local GND pour) remain essential for EMI control.
LT8410EDC-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)
LT8410EDC-1#TRPBF FAQ
1.How can I place an order for LT8410EDC-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8410EDC-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 LT8410EDC-1#TRPBF reliable?
The price and inventory of LT8410EDC-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 LT8410EDC-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8410EDC-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8410EDC-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8410EDC-1#TRPBF?
LT8410EDC-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8410EDC-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 LT8410EDC-1#TRPBF?
For technical support, including LT8410EDC-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8410EDC-1#TRPBF requirements.
6.How does Aetrix verify that LT8410EDC-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8410EDC-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 LT8410EDC-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8410EDC-1#TRPBF?
All LT8410EDC-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8410EDC-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 LT8410EDC-1#TRPBF part is unused and in its original packaging.
Return procedure for LT8410EDC-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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