LT3467A - 1.1A Step-Up DC/DC Converter with Integrated Soft-Start
Features
- 1.3MHz Switching Frequency (LT3467)
- 2.1MHz Switching Frequency (LT3467A)
- Low VCESAT Switch: 330mV at 1.1A
- High Output Voltage: Up to 40V
- Wide Input Range: 2.4V to 16V
- Dedicated Soft-Start Pin
- 5V at 540mA from 3.3V Input (LT3467)
- 5V at 430mA from 3.3V Input (LT3467A)
- 12V at 270mA from 5V Input (LT3467)
- 12V at 260mA from 5V Input (LT3467A)
- Uses Small Surface Mount Components
- Low Shutdown Current: <1μA
- Pin-for-Pin Compatible with the LT1930 and LT1613
- Low Profile (1mm) ThinSOT™ Package
- Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN Package
AEC-Q100 data available for specific packages
Typical Application
Description
The LT®3467/LT3467A switching regulators combine a 42V, 1.1A switch with a soft-start function. Pin compatible with the LT1930, its low VCESAT bipolar switch enables the device to deliver high current outputs in a small footprint. The LT3467 switches at 1.3MHz, allowing the use of tiny, low cost and low height inductors and capacitors. The LT3467A switches at 2.1MHz, allowing the use of even smaller components. High inrush current at start-up is eliminated using the programmable soft-start function. A single external capacitor sets the current ramp rate. A constant frequency current mode PWM architecture results in low, predictable output noise that is easy to filter.
The high voltage switch on the LT3467/LT3467A is rated at 42V, making the devices ideal for boost converters up to 40V as well as SEPIC and flyback designs. The LT3467 can generate 5V at up to 540mA from a 3.3V supply or 5V at 450mA from four alkaline cells in a SEPIC design. The LT3467A can generate 5V at up to 430mA from a 3.3V supply or 15V at 135mA from a 3.3V supply. The LT3467/ LT3467A are available in a low profile (1mm) 6-lead SOT-23 package and tiny 3mm × 2mm DFN package.
| Switching Frequency |
|
| LT3467 | 1.3MHz |
| LT3467A | 2.1MHz |
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT3467AEDDB#PBF | 3x2 DFN-8 | DDB | E | 05-08-1702 | Yes |
| LT3467AEDDB#TRMPBF | 3x2 DFN-8 | DDB | E | 05-08-1702 | Yes |
| LT3467AEDDB#TRPBF | 3x2 DFN-8 | DDB | E | 05-08-1702 | Yes |
| LT3467AES6#PBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LT3467AES6#TRMPBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LT3467AES6#TRPBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LT3467AIDDB#PBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LT3467AIDDB#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LT3467AIDDB#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LT3467AIS6#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LT3467AIS6#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LT3467AIS6#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT3467AEDDB#PBF | 3x2 DFN-8 | E | $2.57 | Yes | ||
| LT3467AEDDB#TRMPBF | 3x2 DFN-8 | E | $2.57 | $1.83 | Yes | |
| LT3467AEDDB#TRPBF | 3x2 DFN-8 | E | $2.57 | $1.81 | Yes | |
| LT3467AES6#PBF | SOT-23 | E | $2.57 | Yes | ||
| LT3467AES6#TRMPBF | SOT-23 | E | $2.57 | $1.83 | Yes | |
| LT3467AES6#TRPBF | SOT-23 | E | $2.57 | $1.81 | Yes | |
| LT3467AIDDB#PBF | 3x2 DFN-8 | I | $2.97 | Yes | ||
| LT3467AIDDB#TRMPBF | 3x2 DFN-8 | I | $2.97 | $2.13 | Yes | |
| LT3467AIDDB#TRPBF | 3x2 DFN-8 | I | $2.97 | $2.08 | Yes | |
| LT3467AIS6#PBF | SOT-23 | I | $2.97 | Yes | ||
| LT3467AIS6#TRMPBF | SOT-23 | I | $2.97 | $2.13 | Yes | |
| LT3467AIS6#TRPBF | SOT-23 | I | $2.97 | $2.08 | Yes | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT3467AIDDB#PBF | 3x2 DFN-8 | I | $2.97 | Yes | ||
| LT3467AIDDB#TRMPBF | 3x2 DFN-8 | I | $2.97 | $2.13 | Yes | |
| LT3467AIDDB#TRPBF | 3x2 DFN-8 | I | $2.97 | $2.08 | Yes | |
| LT3467AIS6#PBF | SOT-23 | I | $2.97 | Yes | ||
| LT3467AIS6#TRMPBF | SOT-23 | I | $2.97 | $2.13 | Yes | |
| LT3467AIS6#TRPBF | SOT-23 | I | $2.97 | $2.08 | Yes | |
| Buy Now • Request Samples | ||||||
Applications
- Digital Cameras
- White LED Power Supplies
- Cellular Phones
- Medical Diagnostic Equipment
- Local 5V or 12V Supplies
- TFT-LCD Bias Supplies
- xDSL Power Supplies
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
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Models for the following parts are available in LTspice:
LT3467
LT3467A
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
