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Analog Devices Inc. LT3467ES6#TRPBF
- Part No.:
- LT3467ES6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT3467ES6#TRPBF.pdf
- Description:
- IC REG BST FLYBACK ADJ TSOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LT3467ES6#TRPBF from Analog Devices is a 1.3MHz, 42V, 1.1A monolithic step-up DC/DC converter in a 6-lead TSOT-23 package. It integrates a low VCE(SAT) NPN switch (330mV @ 1.1A), dedicated soft-start pin, and 1.255V feedback reference. Designed for compact boost, SEPIC, and flyback topologies, it delivers 5V at 540mA from 3.3V input in portable Li-ion-powered systems.
For engineers reviewing the LT3467ES6#TRPBF datasheet, LT3467ES6#TRPBF pinout, LT3467ES6#TRPBF application, or LT3467ES6#TRPBF equivalent, key selection criteria include switching frequency (1.3MHz), input voltage range (2.4V–16V), output voltage capability up to 40V, soft-start programmability, and thermal performance in the TSOT-23 package with θJA = 165°C/W.
Technical Context
The LT3467ES6#TRPBF employs constant-frequency current-mode PWM control with an internal 1.255V reference and 1.3MHz oscillator. Its NPN switch features 330mV saturation voltage at 1.1A, enabling high efficiency in small-footprint boost converters. The dedicated SS pin accepts an external capacitor to linearly ramp the error amplifier's reference, limiting inrush current and controlling output voltage rise rate.
It supports wide-input operation (2.4V–16V) and high-output-voltage designs (up to 40V), with guaranteed performance over –40°C to +85°C junction temperature. The device includes integrated current limiting (typ. 1.4A), shutdown functionality (<1µA quiescent), and robust protection against overcurrent via cycle-by-cycle peak-current sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.3MHz - enables use of sub-5µH inductors and low-profile ceramic capacitors for space-constrained designs. |
| Input Voltage Range | 2.4V to 16V - supports single Li-ion (2.6–4.2V), multi-cell alkaline (4–6.5V), and fixed 5V/12V rails. |
| Output Voltage Range | Up to 40V - suitable for TFT-LCD bias, xDSL supplies, and industrial sensors requiring >12V outputs. |
| Switch Current Limit | 1.4A typical - protects internal NPN transistor and external components during overload or short-circuit events. |
| Feedback Reference | 1.255V ±2% - sets precise output regulation via external resistor divider; enables stable 5V, 12V, or custom outputs. |
| Soft-Start Control | 4µA constant current into SS pin - allows programmable startup time (e.g., 47nF → ~15ms ramp) to prevent input rail sag. |
| Shutdown Current | <1µA - essential for battery-powered devices requiring ultra-low standby power in sleep mode. |
Pinout & Package
LT3467ES6#TRPBF uses a 6-lead Plastic TSOT-23 package (1mm height, JEDEC MO-193), with exposed pad not present (unlike DFN variants). Pin 1 is marked by a dot; pin 2 is GND; pin 3 is FB; pin 4 is SHDN; pin 5 is SS; pin 6 is VIN. SW is on pin 1 - collector of internal NPN switch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch Collector | Connects to inductor cathode and Schottky diode anode; high dI/dt node requiring minimal trace area to reduce EMI. |
| GND (Pin 2) | Power Ground | Main return path for switch current and IC bias; must tie directly to local ground plane with low-inductance connection. |
| FB (Pin 3) | Feedback Input | Senses output voltage via resistive divider; 1.255V reference sets regulation point; sensitive node requiring short, shielded routing. |
| SHDN (Pin 4) | Enable/Disable Control | Logic-high (>2.4V) enables operation; logic-low (<0.5V) disables switch and reduces supply current to <1µA. |
| SS (Pin 5) | Soft-Start Capacitor Terminal | 4µA current source charges external capacitor to 1.255V; controls ramp rate of error amplifier reference for controlled startup. |
| VIN (Pin 6) | Input Supply | Primary power input (2.4–16V); requires local 1–4.7µF ceramic bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| 1.3MHz fixed-frequency operation | Enables use of 2.2–4.7µH inductors and 1–15µF X5R/X7R ceramics, reducing solution size by >40% vs. 500kHz converters. |
| Low VCE(SAT) NPN switch (330mV @ 1.1A) | Minimizes conduction loss in high-current boost paths, sustaining >85% efficiency at 500mA output from 3.3V input. |
| Dedicated soft-start pin with 4µA current source | Eliminates input inrush spikes without external circuitry; supports configurable startup times (10nF–200nF) for system-level sequencing. |
| 42V switch rating and 40V max output capability | Supports SEPIC/flyback topologies for isolated or negative outputs, and high-voltage bias generation (e.g., 18V/–9V LCD supplies). |
| Pin-for-pin compatibility with LT1930/LT1613 | Allows drop-in replacement in existing designs using those regulators, preserving layout and bill-of-materials where specs align. |
Applications
| Digital Camera Power Supply | White LED Backlight Driver |
|---|---|
Use Scenario: Portable digital camera requiring 5V rail from single Li-ion cell (2.6–4.2V) to power image sensor and processor. IC Role / Device Role / Timing Role: Primary boost regulator generating regulated 5V at up to 540mA with fast transient response and low noise. Use Value: Delivers full-load output across entire battery discharge curve while maintaining >85% efficiency and eliminating cold-start failure via soft-start control. | Use Scenario: Smartphone or tablet display backlight needing adjustable 18V/–9V bias from 3.3V system rail. IC Role / Device Role / Timing Role: Core boost controller in triple-output TFT-LCD bias supply, driving charge-pump stages with precise voltage tracking. Use Value: Enables compact 3.3V-to-18V conversion with <1% output drift over temperature, supporting high-resolution displays with minimal board area. |
| Medical Diagnostic Handheld | xDSL Line Interface Power |
Use Scenario: Battery-operated ultrasound probe requiring isolated ±15V rails from 5V input for analog front-end amplifiers. IC Role / Device Role / Timing Role: Primary switcher in dual-output SEPIC-derived topology providing regulated ±15V at 100mA each with output disconnect. Use Value: Achieves tight cross-regulation and low ripple (<20mVpp) without optocouplers, meeting IEC 60601 safety margins for patient-connected devices. | Use Scenario: DSL modem requiring 40V boost rail from 5V supply to drive line drivers and analog front-end circuits. IC Role / Device Role / Timing Role: High-voltage boost converter delivering 40V at 20mA with stable regulation under varying line impedance loads. Use Value: Sustains full 40V output with <±1.5% load regulation across temperature, enabling reliable ADSL2+ signal integrity in residential environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3467AES6#TRPBF | 2.1MHz switching frequency; lower max duty cycle (82%); reduced 5V output current (430mA @ 3.3V). | Better suited for ultra-compact layouts requiring sub-1µH inductors; less optimal for high-current 5V/12V rails. | Select LT3467AES6#TRPBF when board area is constrained and output current ≤430mA suffices. |
| LT1930ES6#TRPBF | Same 6-lead TSOT-23 footprint; 1.2MHz frequency; higher VCE(SAT) (450mV @ 1A); no dedicated soft-start pin. | Lacks programmable soft-start; requires external RC network for controlled startup; lower efficiency at high load. | Choose LT1930ES6#TRPBF only for legacy designs where soft-start is unnecessary and efficiency margin is acceptable. |
Compared with LT3467AES6#TRPBF and LT1930ES6#TRPBF, the LT3467ES6#TRPBF offers superior current capability (540mA vs. 430mA/-), integrated soft-start (eliminating external components), and lower conduction loss (330mV vs. 450mV), making it optimal for cost-sensitive, high-efficiency portable boost applications.
Availability
LT3467ES6#TRPBF is available at Aetrix Electronics and suitable for medical handhelds, digital cameras, LCD bias supplies, and xDSL interface power requiring stable component supply, long-term lifecycle support, and AEC-Q100-compatible alternatives.
Supply support for LT3467ES6#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT3467 series belongs to Analog Devices' monolithic DC/DC converter product line, engineered for high-voltage, high-current boost, SEPIC, and flyback applications in space- and efficiency-critical portable and industrial systems.
FAQ
What is the maximum output voltage achievable with the LT3467ES6#TRPBF?
The LT3467ES6#TRPBF supports output voltages up to 40V, enabled by its 42V-rated internal NPN switch. This makes it suitable for high-voltage applications such as TFT-LCD bias supplies (e.g., 18V/–9V), xDSL line drivers, and industrial sensors. Output voltage is set externally via the FB pin resistor divider using the formula VOUT = 1.255V × (1 + R1/R2).
Does the LT3467ES6#TRPBF require an external soft-start capacitor?
Yes - the LT3467ES6#TRPBF features a dedicated SS pin with a 4µA internal current source. An external capacitor (typically 10nF–200nF) is required between SS and GND to control startup slew rate and limit inrush current. Omitting it results in uncontrolled output voltage rise and potential input rail collapse during cold start.
Can the LT3467ES6#TRPBF be used in SEPIC topology?
Yes - the LT3467ES6#TRPBF is explicitly validated for SEPIC operation in its datasheet, including a 4-cell-to-5V design example delivering 450mA. Its 42V switch rating, current-mode control, and wide input range (2.4V–16V) make it well-suited for non-inverting buck-boost applications requiring output voltage both above and below input.
What is the thermal resistance of the LT3467ES6#TRPBF in its TSOT-23 package?
The LT3467ES6#TRPBF in the 6-lead TSOT-23 package has a junction-to-ambient thermal resistance (θJA) of 165°C/W and junction-to-case (θJC) of 102°C/W, per the manufacturer's datasheet. Adequate PCB copper area under pins 2 (GND) and 6 (VIN), plus short thermal vias, is recommended to maintain TJ ≤125°C under full load.
Is the LT3467ES6#TRPBF pin-compatible with the LT1930ES6#TRPBF?
Yes - the LT3467ES6#TRPBF is pin-for-pin compatible with the LT1930ES6#TRPBF in the TSOT-23-6 package, sharing identical pinout (SW, GND, FB, SHDN, SS, VIN). However, the LT3467ES6#TRPBF adds a dedicated soft-start pin and lower VCE(SAT), enabling direct replacement with performance improvements in most boost designs.
LT3467ES6#TRPBF 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#TRPBF FAQ
1.How can I place an order for LT3467ES6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3467ES6#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 LT3467ES6#TRPBF reliable?
The price and inventory of LT3467ES6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3467ES6#TRPBF is usually 5 days.
3.What payment methods are accepted for LT3467ES6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3467ES6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3467ES6#TRPBF?
LT3467ES6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3467ES6#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 LT3467ES6#TRPBF?
For technical support, including LT3467ES6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3467ES6#TRPBF requirements.
6.How does Aetrix verify that LT3467ES6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT3467ES6#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 LT3467ES6#TRPBF meets industry standards.
7.What is the process for return or replacement of LT3467ES6#TRPBF?
All LT3467ES6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3467ES6#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 LT3467ES6#TRPBF part is unused and in its original packaging.
Return procedure for LT3467ES6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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