LT3462 - Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT
Features
- Integrated Schottky Rectifier
- Fixed Frequency 1.2MHz/2.7MHz Operation
- Very Low Noise: 1mVP-P Output Ripple
- Low VCESAT Switch: 270mV at 250mA
- ±5V at 100mA from 5V Input
- ±12V at 30mA from 3.3V Input
- Low Input Bias Current GND Based FB Input
- Low Impedance (40 Ohm) 1.265V Reference Output
- High Output Voltage: Up to ±38V
- Wide Input Range: 2.5V to 16V
- Uses Tiny Surface Mount Components
- Low Shutdown Current: <10µA
- Low Profile (1mm) SOT-23 (ThinSOT™) Package
Typical Application
Description
The LT3462/LT3462A are general purpose fixed frequency current mode inverting DC/DC converters. Both devices feature an integrated Schottky and a low VCESAT switch allowing a small converter footprint and lower parts cost. The LT3462 switches at 1.2MHz while the LT3462A switches at 2.7MHz. These high speeds enable the use of tiny, low cost and low height capacitors and inductors.
The LT3462/LT3462A operate in a dual inductor inverting topology that filters both the input and output currents.Very low output voltage ripple approaching 1mVP-P can be achieved when ceramic capacitors are used. Fixed frequency switching ensures a clean output free from low frequency noise typically present with charge pump solutions.The 40V switch allows a VIN to VOUT differential ofup to 38V for dual inductor topologies.
Both devices provide a low impedance 1.265V reference output to supply the feedback resistor network. A ground referenced, high impedance FB input allows high feedback resistor values without compromising output accuracy.
The LT3462/LT3462A are available in a 6-lead SOT-23package.
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 |
|---|---|---|---|---|---|
| LT3462AES6#PBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LT3462AES6#TRMPBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LT3462AES6#TRPBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LT3462ES6#PBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LT3462ES6#TRMPBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LT3462ES6#TRPBF | SOT-23 | S6 | E | 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 | |
|---|---|---|---|---|---|---|
| LT3462AES6#PBF | SOT-23 | E | $2.50 | Yes | ||
| LT3462AES6#TRMPBF | SOT-23 | E | $2.50 | $2.13 | Yes | |
| LT3462AES6#TRPBF | SOT-23 | E | $2.50 | $2.11 | Yes | |
| LT3462ES6#PBF | SOT-23 | E | $2.50 | Yes | ||
| LT3462ES6#TRMPBF | SOT-23 | E | $2.50 | $2.13 | Yes | |
| LT3462ES6#TRPBF | SOT-23 | E | $2.50 | $2.11 | 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.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC670A | LT3462ES6 / AES6 | High Efficiency / Small Size Inverting DC/DC Converter, Vin = 4.5V to 5.5V, Vout = -5V / 100mA | Contact Factory | |
| Buy Now | |||
Applications
- CCD Bias
- LCD Bias
- GaAs FET Bias
- General Purpose Negative Voltage Supply
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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
Models for the following parts are available in LTspice:
LT3462
LT3462A
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.
