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Analog Devices Inc. LT3467AES6#TRPBF
- Part No.:
- LT3467AES6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT3467AES6#TRPBF.pdf
- Description:
- IC REG BST FLYBACK ADJ TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,386
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Product details
Overview
LT3467AES6#TRPBF from Analog Devices is a 2.1MHz, 42V, 1.1A monolithic step-up DC/DC converter with integrated soft-start and current-mode PWM control. It delivers 5V at 430mA from a 3.3V input or 15V at 135mA in compact boost configurations for space-constrained power rails. Its low 330mV VCE(SAT) bipolar switch enables high efficiency in TSOT-23 footprint.
For engineers reviewing the LT3467AES6#TRPBF datasheet, LT3467AES6#TRPBF pinout, LT3467AES6#TRPBF application, or LT3467AES6#TRPBF equivalent, key selection criteria include switching frequency (2.1MHz), input voltage range (2.4V–16V), feedback reference (1.255V), soft-start programmability, and 6-lead TSOT-23 thermal performance (θJA = 165°C/W).
Technical Context
The LT3467AES6#TRPBF implements constant-frequency current-mode PWM control with an internal 2.1MHz oscillator, enabling stable regulation and predictable noise filtering. Its NPN bipolar power switch features 42V breakdown and 330mV saturation voltage at 1.1A, supporting boost, SEPIC, and flyback topologies up to 40V output.
Soft-start is implemented via a dedicated SS pin with 4µA internal charging current into an external capacitor, limiting inrush and controlling output voltage ramp rate. The device uses a 1.255V precision feedback reference and supports shutdown with <1µA quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 2.1MHz - Enables use of sub-1µH inductors and ultra-low-profile ceramic capacitors. |
| Input Voltage Range | 2.4V to 16V - Supports single Li-ion (2.6–4.2V), 4-cell alkaline (4–6.5V), or 5V bus inputs. |
| Output Voltage Range | Up to 40V - Validated in boost, SEPIC, and flyback topologies with external diode and inductor. |
| Feedback Reference | 1.255V ±1.5% - Sets output via resistor divider; enables precise 5V, 6V, 12V, 15V, or 40V regulation. |
| Switch Current Limit | 1.4A typical - Protects internal NPN transistor and external components during overload or startup. |
| Shutdown Current | <1µA - Minimizes battery drain in always-on systems requiring deep sleep modes. |
| VCE(SAT) | 330mV at 1.1A - Reduces conduction loss and improves efficiency in high-current boost stages. |
Pinout & Package
LT3467AES6#TRPBF is housed in a 6-lead Plastic TSOT-23 package (1.0mm max height, 2.9mm × 1.6mm footprint) with exposed pad not present. Thermal resistance θJA = 165°C/W, θJC = 102°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch Collector | Connects to inductor/diode node; carries full switched current; minimize trace area to reduce EMI. |
| 2 (GND) | Power Ground | Main return path for switch, feedback, and soft-start circuits; tie directly to local ground plane. |
| 3 (FB) | Feedback Input | Senses output via resistor divider; 1.255V reference sets VOUT = 1.255V × (1 + R1/R2). |
| 4 (SHDN) | Shutdown Control | Active-high enable: ≥2.4V enables operation; ≤0.5V disables switching and reduces IQ to <1µA. |
| 5 (SS) | Soft-Start Timing | 4µA internal current charges external capacitor to 1.255V; controls output voltage ramp rate and inrush. |
| 6 (VIN) | Input Supply | Accepts 2.4–16V; requires local 1–4.7µF ceramic bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| 2.1MHz fixed-frequency operation | Enables use of 0.9–6.8µH inductors and 1–22µF ceramic output capacitors, reducing board area by >40% vs 1.3MHz parts. |
| Dedicated soft-start pin (SS) | Programmable startup time via external capacitor; eliminates input inrush and prevents switch overstress in high-VOUT designs. |
| 42V, 1.1A NPN switch with 330mV VCE(SAT) | Supports 40V boost outputs and high-current SEPIC/flyback topologies while maintaining >85% efficiency at 430mA/5V. |
| 1.255V precision feedback reference | ±1.5% tolerance over –40°C to +85°C enables accurate output regulation without trimming resistors. |
| Low shutdown current (<1µA) | Extends battery life in portable medical, camera, and IoT devices requiring long standby duration. |
Applications
| Digital Camera Power Supply | White LED Backlight Driver |
|---|---|
|
Use Scenario: Single Li-ion cell (2.6–4.2V) powers CCD/CMOS sensor and image processor requiring stable 5V rail. IC Role / Device Role / Timing Role: Step-up DC/DC converter generating regulated 5V at up to 430mA with controlled startup to avoid sensor reset. Use Value: 2.1MHz switching minimizes inductor size (<1.0mm height); soft-start prevents voltage droop during flash activation. |
Use Scenario: TFT-LCD panel with white LED backlight requiring 15V bias from 3.3V logic supply. IC Role / Device Role / Timing Role: High-voltage boost converter delivering 15V at 135mA with tight output regulation. Use Value: 42V switch rating and 1.255V FB reference enable accurate 15V output; 2.1MHz operation allows miniature 6.8µH inductor. |
| Portable Medical Diagnostic Equipment | xDSL Line Card Power |
|
Use Scenario: Handheld ultrasound or glucose meter operating from 4×AA alkaline cells (4–6.5V) needing isolated 12V and –12V rails. IC Role / Device Role / Timing Role: Primary boost controller in dual-output SEPIC configuration generating ±12V with output disconnect capability. Use Value: Wide 2.4–16V input range accommodates battery discharge; soft-start ensures clean power-up of analog front-end circuitry. |
Use Scenario: DSLAM line card requiring local 40V bias for line driver amplifiers from 5V backplane supply. IC Role / Device Role / Timing Role: High-efficiency boost converter generating 40V at 20mA with minimal ripple for analog signal integrity. Use Value: 42V switch rating and current-mode control deliver stable 40V output; TSOT-23 package fits dense telecom PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3467ES6#TRPBF | 1.3MHz switching frequency; identical pinout, package, and 1.255V FB reference. | Lower frequency requires larger inductors (≥4.7µH); better suited for lower-noise, higher-current 5V/540mA designs from 3.3V. | Select LT3467ES6#TRPBF when board layout permits larger magnetics and lower EMI is prioritized over miniaturization. |
| LT3467AIS6#TRPBF | Same 2.1MHz frequency and electrical specs, but rated for –40°C to +125°C junction temperature. | Validated for under-hood automotive or industrial environments where ambient exceeds 85°C. | Choose LT3467AIS6#TRPBF for extended temperature applications; LT3467AES6#TRPBF is optimized for commercial-grade portable equipment. |
Compared with LT3467ES6#TRPBF, LT3467AES6#TRPBF achieves smaller passive component size via 2.1MHz operation, while LT3467AIS6#TRPBF adds automotive-grade thermal robustness-neither offers pin-to-pin compatibility beyond shared TSOT-23 footprint and function mapping.
Availability
LT3467AES6#TRPBF is available at Aetrix Electronics and suitable for digital camera power supplies, white LED backlight drivers, portable medical diagnostic equipment, and xDSL line card power requiring stable component supply, consistent parametric performance, and commercial-temperature reliability.
Supply support for LT3467AES6#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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, power management, and signal conditioning.
The LT3467/LT3467A product line delivers monolithic boost converters optimized for space-constrained, battery-powered applications demanding high efficiency, fast transient response, and programmable soft-start-targeting portable imaging, telecom, and industrial subsystems.
FAQ
What is the maximum output voltage achievable with the LT3467AES6#TRPBF?
The LT3467AES6#TRPBF supports output voltages up to 40V in boost, SEPIC, and flyback configurations, enabled by its 42V-rated internal NPN switch. This is validated in application circuits such as the 5V-to-40V boost converter (Figure 3467 TA04a) and triple-output TFT-LCD bias supplies. Output stability depends on proper external diode (e.g., MBRM140), inductor, and compensation network selection.
Does the LT3467AES6#TRPBF require an external soft-start capacitor?
The LT3467AES6#TRPBF includes a dedicated SS pin with a 4µA internal current source that charges an external capacitor to 1.255V. While the device functions without it, omitting the capacitor causes uncontrolled inrush current and potential switch overstress-especially in high-VOUT designs. Typical values range from 10nF to 200nF; 47nF is used in the reference Li-ion-to-5V circuit (Figure 3467 AI02).
Can the LT3467AES6#TRPBF be used in SEPIC topology?
Yes, the LT3467AES6#TRPBF is explicitly qualified for SEPIC operation, as demonstrated in the "4-Cell to 5V SEPIC Converter" application (Figure 3467 TA03). Its 42V switch rating, current-mode control, and wide input range (2.4–16V) support efficient bidirectional energy transfer. Design requires two coupled or uncoupled inductors, a primary-side capacitor, and careful compensation to manage right-half-plane zero effects.
What is the thermal performance of the LT3467AES6#TRPBF in TSOT-23 package?
The LT3467AES6#TRPBF in 6-lead TSOT-23 has θJA = 165°C/W and θJC = 102°C/W, measured per JEDEC JESD51 standards. Performance assumes standard 2-layer PCB with 1in² copper pour under the package. For continuous 430mA/5V operation, junction temperature rise is ~70°C above ambient-well within the –40°C to +85°C operating range. Layout must minimize thermal resistance via short, wide traces to GND.
How does the LT3467AES6#TRPBF differ from the LT3467AEDDB#TRPBF?
The LT3467AES6#TRPBF uses a 6-lead TSOT-23 package (1.0mm height, 2.9mm × 1.6mm), while LT3467AEDDB#TRPBF uses an 8-lead 3mm × 2mm DFN with exposed thermal pad (θJA = 80°C/W). Both share identical electrical specs-including 2.1MHz frequency, 1.255V FB, and 42V switch-but differ in thermal capability, board area, and mounting requirements. They are not pin-compatible due to different pin counts and layouts.
LT3467AES6#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:
- 2.1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT3467AES6#TRPBF FAQ
1.How can I place an order for LT3467AES6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3467AES6#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 LT3467AES6#TRPBF reliable?
The price and inventory of LT3467AES6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3467AES6#TRPBF is usually 5 days.
3.What payment methods are accepted for LT3467AES6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3467AES6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3467AES6#TRPBF?
LT3467AES6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3467AES6#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 LT3467AES6#TRPBF?
For technical support, including LT3467AES6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3467AES6#TRPBF requirements.
6.How does Aetrix verify that LT3467AES6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT3467AES6#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 LT3467AES6#TRPBF meets industry standards.
7.What is the process for return or replacement of LT3467AES6#TRPBF?
All LT3467AES6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3467AES6#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 LT3467AES6#TRPBF part is unused and in its original packaging.
Return procedure for LT3467AES6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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