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Analog Devices Inc. LT3467IS6#TRM
- Part No.:
- LT3467IS6#TRM
- Manufacturer:
- Analog Devices Inc.
- Package:
- -
- Datasheet:
-
LT3467IS6#TRM.pdf
- Description:
- IC REG MULT CONFG ADJ TSOT23
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Inventory:2,322
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Product details
Overview
LT3467IS6#TRM from Analog Devices is a 1.3MHz, 42V, 1.1A monolithic step-up DC/DC converter in a 6-lead TSOT-23 package, featuring integrated soft-start, constant-frequency current-mode PWM control, and a low VCE(SAT) bipolar switch (330mV at 1.1A). It delivers 5V at 540mA from a 3.3V input or 12V at 270mA from a 5V input, targeting space-constrained boost, SEPIC, and flyback power supplies.
For engineers reviewing the LT3467IS6#TRM datasheet, LT3467IS6#TRM pinout, LT3467IS6#TRM application, or LT3467IS6#TRM equivalent, key selection criteria include its 1.3MHz switching frequency, 2.4V–16V input range, 42V switch rating, programmable soft-start via external capacitor, and guaranteed operation from –40°C to +125°C junction temperature.
Technical Context
The LT3467IS6#TRM implements a constant-frequency current-mode PWM architecture with an internal 1.3MHz oscillator, enabling predictable output noise and stable loop compensation. Its NPN bipolar power switch features 42V breakdown voltage and 330mV saturation voltage at 1.1A, supporting high-efficiency boost conversion up to 40V output.
Soft-start is implemented via a dedicated SS pin sourcing 4µA to charge an external capacitor to 1.255V, limiting inrush current and peak switch current during startup. The feedback pin regulates output using a precise 1.255V reference, with ±10nA bias current over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.3MHz - enables use of sub-5µH inductors and compact ceramic capacitors for minimal board area |
| Input Voltage Range | 2.4V to 16V - supports single Li-ion (2.6–4.2V), 4-cell alkaline (4–6.5V), or 5V rail inputs |
| Switch Rating | 42V VCEO, 1.1A continuous - allows 40V boost, SEPIC, and flyback topologies without external switch |
| Feedback Reference | 1.255V ±1.2% - sets output voltage accuracy via external resistor divider (VOUT = 1.255V × (1 + R1/R2)) |
| Soft-Start Current | 4µA - charges external capacitor linearly to 1.255V, enabling controlled ramp-up of output voltage and switch current |
| Shutdown Current | <1µA - ensures ultra-low quiescent drain in battery-powered standby modes |
| Operating Temp | –40°C to +125°C - qualified for industrial and automotive-adjacent embedded applications |
Pinout & Package
LT3467IS6#TRM is housed in a 6-lead Plastic TSOT-23 package (1mm height, JEDEC MO-193), with exposed pad not present. Pin 1 is marked by a bar; pin numbering follows standard TSOT-23 orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch Collector | Connects to inductor/diode node; carries full switch current; requires minimal trace area to reduce EMI |
| GND (Pin 2) | Power Ground | Main return path for switch current and IC ground; must tie directly to local ground plane |
| FB (Pin 3) | Feedback Input | Senses resistive divider output; 1.255V reference sets regulation point; sensitive to noise-minimize trace area |
| VIN (Pin 6) | Input Supply | Accepts 2.4–16V input; requires local 1–4.7µF ceramic bypass capacitor placed adjacent to pin |
| SS (Pin 5) | Soft-Start Control | 4µA current source charges external capacitor to 1.255V; determines startup slew rate and inrush limit |
| SHDN (Pin 4) | Enable/Shutdown | Logic-high ≥2.4V enables regulator; logic-low ≤0.5V disables with <1µA shutdown current |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 42V/1.1A NPN switch | Eliminates need for external high-voltage transistor, reducing BOM count and layout complexity in 40V boost designs |
| Dedicated soft-start pin | Enables precise control of output voltage ramp rate via single external capacitor-critical for avoiding inrush-induced supply droop |
| 1.3MHz constant-frequency PWM | Permits use of 2.2–4.7µH inductors and 4.7–15µF X5R/X7R ceramics, achieving <10mm² total passive footprint |
| Low 330mV VCE(SAT) at 1.1A | Reduces conduction loss and thermal stress, enabling >85% efficiency at 500mA output from 3.3V input |
| –40°C to +125°C operation | Guaranteed performance across extended industrial temperature range without derating or thermal margin penalties |
Applications
| Portable Medical Sensors | Industrial IoT Node Power |
|---|---|
Use Scenario: Boosting 3.3V MCU rail to 5V for USB-peripheral interface or 12V for analog front-end bias in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary step-up regulator delivering regulated 5V/540mA or 12V/270mA with soft-start to prevent sensor reset during power-on. Use Value: Single-chip solution eliminates discrete switch and driver, reducing PCB area by >40% versus controller+MOSFET alternatives. | Use Scenario: Generating stable 5V from wide-range 4–6.5V 4-cell alkaline supply in battery-operated edge sensors. IC Role / Device Role / Timing Role: SEPIC converter providing non-inverting 5V output with input-to-output isolation, maintaining regulation as battery discharges. Use Value: 1.3MHz operation enables tiny 10µH inductors and 2.2µF input/output caps-ideal for compact, vibration-resistant modules. |
| TFT-LCD Bias Supplies | White LED Backlight Drivers |
Use Scenario: Generating dual-rail ±9V and 18V outputs from 3.3V for LCD panel gate/source drivers in portable displays. IC Role / Device Role / Timing Role: Core boost controller in triple-output topology with independent soft-start sequencing for voltage rail ordering. Use Value: Precise 1.255V reference and low FB bias current (<50nA) ensure tight output regulation across temperature and load. | Use Scenario: Driving parallel white LED strings requiring 18–24V from 3.3V or 5V battery sources in digital cameras and camcorders. IC Role / Device Role / Timing Role: High-efficiency boost converter operating in continuous conduction mode with current-mode control for stable LED current. Use Value: 42V switch rating supports up to 10-series LEDs; 1.3MHz switching minimizes audible noise and EMI near image sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3467ES6#TRMPBF | Same electrical specs but rated for –40°C to +85°C junction temperature (E-grade vs I-grade) | Lacks extended temperature qualification; unsuitable for high-ambient industrial or under-hood environments | Select only for commercial-temperature applications where cost sensitivity outweighs thermal margin requirements |
| LT3467AIS6#TRMPBF | 2.1MHz switching frequency (vs 1.3MHz); lower max output current (430mA @ 3.3V→5V vs 540mA) | Enables smaller inductors (0.9–6.8µH) but reduces max load capability; optimized for ultra-compact, lower-power designs | Choose when board space is critical and output current ≤430mA suffices; verify stability with higher-frequency compensation |
Compared with LT3467ES6#TRMPBF, LT3467IS6#TRM provides guaranteed operation to +125°C without derating, while LT3467AIS6#TRMPBF trades peak current capability for higher switching frequency-enabling 30% smaller magnetics at the cost of ~20% lower 5V output current from 3.3V.
Availability
LT3467IS6#TRM is available at Aetrix Electronics and suitable for industrial automation controllers, portable medical instrumentation, and battery-powered IoT edge nodes requiring stable component supply across extended temperature ranges.
Supply support for LT3467IS6#TRM 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, communications, and automotive markets.
The LT3467/LT3467A product line delivers monolithic, high-voltage boost converters optimized for space-constrained, high-efficiency DC/DC conversion in portable and industrial systems-emphasizing integration, thermal robustness, and ease of design.
FAQ
What is the maximum output voltage achievable with the LT3467IS6#TRM?
The LT3467IS6#TRM supports output voltages up to 40V, enabled by its internal 42V-rated NPN switch. This makes it suitable for high-voltage boost, SEPIC, and flyback configurations. Output voltage is set externally via the FB pin resistor divider (VOUT = 1.255V × (1 + R1/R2)), and stability must be verified per application conditions-including diode forward drop and switch saturation voltage.
Does the LT3467IS6#TRM require an external Schottky diode, and what are key selection criteria?
Yes, the LT3467IS6#TRM requires an external Schottky diode connected between SW and output. Key selection criteria include: reverse voltage rating ≥ output voltage + 5V margin (e.g., 40V diode for 35V output), average forward current rating ≥ peak inductor current, and low forward voltage (e.g., On Semiconductor MBRM140 for 40V output). Diode selection directly impacts efficiency and thermal performance.
How does the soft-start function work on the LT3467IS6#TRM, and how is it configured?
The LT3467IS6#TRM features a dedicated SS pin that sources a precise 4µA current to charge an external capacitor to 1.255V. The resulting voltage ramp controls the error amplifier's reference, limiting peak switch current during startup. A typical 47nF capacitor yields ~15ms soft-start time. Leaving SS open disables soft-start; connecting to GND forces immediate enable with no ramp.
Can the LT3467IS6#TRM operate from a single Li-ion cell, and what is its minimum input voltage?
Yes, the LT3467IS6#TRM operates from a single Li-ion cell (2.6V–4.2V nominal). Its minimum operating input voltage is 2.4V, verified across the full –40°C to +125°C temperature range. At 3.3V input, it delivers 5V at up to 540mA; at 2.6V input, output current drops to 360mA due to duty-cycle and switch-loss constraints.
Is the LT3467IS6#TRM pin-compatible with other regulators, and which ones?
Yes, the LT3467IS6#TRM is pin-for-pin compatible with the LT1930 and LT1613 in the TSOT-23-6 package. This allows direct replacement in existing designs without PCB changes. However, differences in switching frequency (1.3MHz vs LT1930's 1.2MHz), reference voltage (1.255V vs LT1930's 1.22V), and soft-start implementation require verification of loop stability and output accuracy in legacy layouts.
LT3467IS6#TRM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
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- Voltage - Input (Max):
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- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
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- Grade:
- -
- Qualification:
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- Mounting Type:
- -
- Supplier Device Package:
- -
LT3467IS6#TRM FAQ
1.How can I place an order for LT3467IS6#TRM through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3467IS6#TRM 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 LT3467IS6#TRM reliable?
The price and inventory of LT3467IS6#TRM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3467IS6#TRM is usually 5 days.
3.What payment methods are accepted for LT3467IS6#TRM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3467IS6#TRM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3467IS6#TRM?
LT3467IS6#TRM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3467IS6#TRM 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 LT3467IS6#TRM?
For technical support, including LT3467IS6#TRM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3467IS6#TRM requirements.
6.How does Aetrix verify that LT3467IS6#TRM is sourced from the original manufacturer or authorized distributors?
All LT3467IS6#TRM 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 LT3467IS6#TRM meets industry standards.
7.What is the process for return or replacement of LT3467IS6#TRM?
All LT3467IS6#TRM units undergo pre-shipment inspection (PSI). If there is an issue with LT3467IS6#TRM, 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 LT3467IS6#TRM part is unused and in its original packaging.
Return procedure for LT3467IS6#TRM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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