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Analog Devices Inc. LT3467ES6#TRMPBF
- Part No.:
- LT3467ES6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT3467ES6#TRMPBF.pdf
- Description:
- IC REG BST FLYBACK ADJ TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,450
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Product details
Overview
LT3467ES6#TRMPBF from Analog Devices is a 1.3MHz, 42V, 1.1A step-up DC/DC converter with integrated soft-start and low VCE(SAT) bipolar switch in a 6-lead TSOT-23 package. It delivers 5V at 540mA from 3.3V input or 12V at 270mA from 5V input, supporting boost, SEPIC, and flyback topologies in space-constrained portable power supplies.
For engineers reviewing the LT3467ES6#TRMPBF datasheet, LT3467ES6#TRMPBF pinout, LT3467ES6#TRMPBF application, or LT3467ES6#TRMPBF equivalent, key selection criteria include switching frequency (1.3MHz), feedback reference voltage (1.255V), soft-start programmability, 2.4V–16V input range, and 42V switch rating for up to 40V output designs.
Technical Context
The LT3467ES6#TRMPBF employs constant-frequency current-mode PWM control with an internal 1.3MHz oscillator, enabling predictable noise filtering and stable regulation across line and load variations. Its bipolar switch features 330mV VCE(SAT) at 1.1A and supports duty cycles up to 94%.
Soft-start is implemented via a dedicated SS pin with 4µA internal charging current into an external capacitor, limiting inrush current and controlling output voltage ramp rate. The 1.255V feedback reference enables precise output setting using a resistive divider, with ±1.5% tolerance 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. |
| Output Voltage Capability | Up to 40V - Validated in boost, SEPIC, and flyback configurations with appropriate external components. |
| Feedback Reference | 1.255V ±1.5% - Sets output via R1/R2 divider; enables accurate 5V, 6V, 12V, 15V, or 40V outputs. |
| Soft-Start Control | Dedicated SS pin with 4µA charging current - Allows programmable startup time using external capacitor (10–200nF). |
| Shutdown Current | <1µA - Ensures ultra-low quiescent drain in battery-powered standby modes. |
| Switch VCE(SAT) | 330mV at 1.1A - Minimizes conduction loss and thermal stress in high-current boost stages. |
Pinout & Package
LT3467ES6#TRMPBF is housed in a 6-lead Plastic TSOT-23 package (1mm height, JEDEC MO-193), with exposed pad not present in this variant (unlike DFN). Pin 1 is marked by a bar; device orientation follows standard TSOT-23 top view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch Collector | Connects to inductor/diode node; carries full switch current; requires minimized trace area to reduce EMI. |
| GND (Pin 2) | Power Ground | Main return path for switch, feedback, and soft-start circuits; must tie directly to local ground plane. |
| FB (Pin 3) | Feedback Input | Monitors output via resistive divider; 1.255V reference sets regulation point; sensitive to noise-minimize trace area. |
| VIN (Pin 6) | Input Supply | Accepts 2.4–16V; requires local 1–4.7µF ceramic bypass capacitor placed adjacent to pin. |
| SS (Pin 5) | Soft-Start Control | Charged by internal 4µA current source to 1.255V; controls output voltage ramp rate and peak switch current at startup. |
| SHDN (Pin 4) | Enable/Shutdown | Logic-level input: ≥2.4V enables operation; ≤0.5V disables switch and reduces IQ to <1µA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 42V, 1.1A NPN switch | Eliminates need for external high-voltage transistor; supports 40V boost outputs without external level-shifting. |
| Programmable soft-start | Prevents input inrush and switch overstress during startup; critical for high-VOUT (>30V) applications. |
| 1.3MHz fixed-frequency operation | Reduces inductor size (e.g., 2.7µH typical) and enables use of low-profile, low-ESR ceramic capacitors. |
| Low 330mV VCE(SAT) at 1.1A | Improves efficiency in high-current boost stages (e.g., 5V@540mA from 3.3V) and lowers thermal dissipation. |
| Pin-compatible with LT1930/LT1613 | Enables drop-in replacement in existing designs using those regulators, simplifying upgrade paths. |
Applications
| Digital Camera Power Supply | White LED Backlight Driver |
|---|---|
Use Scenario: Generating 15V bias for CCD sensor or 5V logic rail from a single Li-ion cell in compact camera modules. IC Role / Device Role / Timing Role: Primary boost controller regulating output voltage with soft-start to prevent flash-induced supply sag. Use Value: Delivers 135mA at 15V from 3.3V input with 1.3MHz switching, enabling small 6.8µH inductor and minimizing PCB footprint. | Use Scenario: Driving parallel white LEDs requiring 20–30V forward voltage in smartphone or tablet displays. IC Role / Device Role / Timing Role: High-voltage boost converter operating in continuous conduction mode with precise current regulation via external sense resistor. Use Value: 42V switch rating supports up to 40V output; 1.255V FB reference allows tight LED current control using standard resistor tolerances. |
| TFT-LCD Bias Supply | Portable Medical Instrument Power |
Use Scenario: Generating +9V, –9V, and +18V rails from 3.3V for LCD panel gate/source drivers in handheld diagnostic devices. IC Role / Device Role / Timing Role: Core boost stage in triple-output charge-pump-assisted topology with soft-start sequencing. Use Value: Dedicated SS pin enables controlled ramp-up of all outputs, preventing latch-up in downstream LDOs and analog front-ends. | Use Scenario: Providing isolated 5V and ±15V rails for analog signal conditioning and microcontroller in battery-powered ultrasound or glucose meters. IC Role / Device Role / Timing Role: Primary DC/DC converter in multi-rail power tree; shutdown pin enables system-level power gating. Use Value: <1µA shutdown current extends battery life; 2.4–16V input range accommodates aging primary cells and USB input fallback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3467AES6#TRMPBF | 2.1MHz switching frequency; lower max duty cycle (82%); reduced 5V output current (430mA vs. 540mA @3.3V). | Better suited for ultra-compact layouts requiring sub-1µH inductors; less optimal for high-current 5V generation. | Select LT3467AES6#TRMPBF when board area is constrained and output current ≤430mA suffices. |
| LT1930ES6#TRMPBF | No soft-start pin; 1.2MHz frequency; higher VCE(SAT) (~400mV); same 42V/1.1A switch rating. | Lacks programmable startup control; may require external soft-start circuitry for high-VOUT or sensitive loads. | Choose LT1930ES6#TRMPBF only if soft-start is unnecessary and legacy compatibility is required. |
Compared with LT3467AES6#TRMPBF and LT1930ES6#TRMPBF, the LT3467ES6#TRMPBF uniquely combines 1.3MHz operation, dedicated soft-start, and highest 5V output current from 3.3V input-making it optimal for portable boost applications demanding both performance and robust startup behavior.
Availability
LT3467ES6#TRMPBF is available at Aetrix Electronics and suitable for portable medical instruments, digital camera power systems, TFT-LCD bias generation, and industrial handheld devices requiring stable component supply and guaranteed long-term sourcing.
Supply support for LT3467ES6#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and power management markets.
The LT3467ES6#TRMPBF belongs to Analog Devices' monolithic DC/DC converter product line, designed specifically for compact, high-efficiency boost, SEPIC, and flyback power conversion in battery-powered and space-constrained applications.
FAQ
What is the maximum output voltage achievable with the LT3467ES6#TRMPBF?
The LT3467ES6#TRMPBF supports output voltages up to 40V in boost, SEPIC, and flyback configurations, limited by its 42V-rated internal switch and validated design examples-including a documented 5V-to-40V boost converter delivering 20mA. Output stability and efficiency depend on proper selection of external diode, inductor, and compensation components per the datasheet guidelines.
Does the LT3467ES6#TRMPBF require an external soft-start capacitor?
Yes-the LT3467ES6#TRMPBF features a dedicated SS pin that requires an external capacitor (typically 10nF–200nF) to implement programmable soft-start. Without it, the device starts abruptly, risking high inrush current and potential switch overstress-especially in high-output-voltage applications. Leaving SS floating disables soft-start functionality.
Can the LT3467ES6#TRMPBF be used in SEPIC topology?
Yes-the LT3467ES6#TRMPBF is explicitly validated for SEPIC operation in its datasheet, including a 4-cell-to-5V design delivering up to 450mA. Its 42V switch rating, current-mode control, and 94% max duty cycle support efficient SEPIC implementation with proper inductor coupling and diode selection (e.g., PMEG2010).
What is the feedback reference voltage of the LT3467ES6#TRMPBF?
The LT3467ES6#TRMPBF has a precision feedback reference voltage of 1.255V ±1.5% over temperature, used to set output voltage via an external resistive divider (VOUT = 1.255V × (1 + R1/R2)). This value is confirmed in Electrical Characteristics tables and block diagram annotations, and applies directly to the LT3467ES6#TRMPBF variant.
Is the LT3467ES6#TRMPBF pin-compatible with the LT1930ES6#TRMPBF?
Yes-the LT3467ES6#TRMPBF is pin-for-pin compatible with the LT1930ES6#TRMPBF in the TSOT-23-6 package, sharing identical pinout (SW, GND, FB, SHDN, SS, VIN). This allows direct substitution where soft-start capability is added or retained, though designers must verify loop compensation due to differing oscillator frequencies (1.3MHz vs. 1.2MHz) and VCE(SAT).
LT3467ES6#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Flyback, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.4V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.255V
- Voltage - Output (Max):
- 40V
- Current - Output:
- 1.1A
- Frequency - Switching:
- 1.3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT3467ES6#TRMPBF FAQ
1.How can I place an order for LT3467ES6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3467ES6#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 LT3467ES6#TRMPBF reliable?
The price and inventory of LT3467ES6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3467ES6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT3467ES6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3467ES6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3467ES6#TRMPBF?
LT3467ES6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3467ES6#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 LT3467ES6#TRMPBF?
For technical support, including LT3467ES6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3467ES6#TRMPBF requirements.
6.How does Aetrix verify that LT3467ES6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT3467ES6#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 LT3467ES6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT3467ES6#TRMPBF?
All LT3467ES6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3467ES6#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 LT3467ES6#TRMPBF part is unused and in its original packaging.
Return procedure for LT3467ES6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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