LT3436 - 3A, 800kHz Step-Up Switching Regulator
Features
- Constant 800kHz Switching Frequency
- Wide Operating Voltage Range: 3V to 25V
- High Efficiency 0.1 Ohm/3A Switch
- 1.2V Feedback Reference Voltage
- ±2% Overall Output Voltage Tolerance
- Uses Low Profile Surface Mount External Components
- Low Shutdown Current: 11µA
- Synchronizable from 1MHz to 1.4MHz
- Current-Mode Control
- Constant Maximum Switch Current Rating at All Duty Cycles*
- Available in a Small Thermally Enhanced TSSOP-16 Package
Typical Application
Description
The LT3436 is an 800kHz monolithic boost switching regulator. A high efficiency 3A, 0.1 Ohm switch is included on the die together with all the control circuitry required to complete a high frequency, current-mode switching regulator. Current-mode control provides fast transient response and excellent loop stability.
New design techniques achieve high efficiency at high switching frequencies over a wide operating range. A low dropout internal regulator maintains consistent performance over a wide range of inputs from 24V systems to Li- Ion batteries. An operating supply current of 1mA maintains high efficiency, especially at lower output currents. Shutdown reduces quiescent current to 11µA. Maximum switch current remains constant at all duty cycles. Synchronization capability allows an external logic level signal to increase the internal oscillator from 1MHz to 1.4MHz.
Full cycle-by-cycle switch current limit protection and thermal shutdown are provided. High frequency operation allows the reduction of input and output filtering components and permits the use of tiny chip inductors. The LT3436 is available in an exposed pad, 16-pin TSSOP package.
*Patent numbers 6,535,042; 6,611,131; 6,498,466
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 |
|---|---|---|---|---|---|
| LT3436EFE#PBF | TSSOP-16 | FE | E | 05-08-1663 (BB) | Yes |
| LT3436EFE#TRPBF | TSSOP-16 | FE | E | 05-08-1663 (BB) | 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 | |
|---|---|---|---|---|---|---|
| LT3436EFE#PBF | TSSOP-16 | E | $3.93 | $2.75 | Yes | |
| LT3436EFE#TRPBF | TSSOP-16 | E | $2.87 | 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 |
|---|---|---|---|
| DC533A | LT3436EFE Demo Board | 3.2V ≤ VIN ≤ to 12V, Vout = 12V @ Up to 2A | $100.00 | |
| Buy Now | |||
Applications
- DSL Modems
- Portable Computers
- Battery-Powered Systems
- Distributed Power
People Who Viewed This Product Also Viewed
- LT1170 - 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators
- LT3477 - 3A, DC/DC Converter with Dual Rail-to-Rail Current Sense
- LT1370 - 500kHz High Efficiency 6A Switching Regulator
- LT3580 - Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
- LT8582 - Dual 3A Boost/Inverting/SEPIC DC/DC Converter with Fault Protection
- LTC3115-1 - 40V, 2A Synchronous Buck-Boost DC/DC Converter
- LT3581 - 3.3A Boost/Inverting DC/DC Converter with Fault Protection
- LT3479 - 3A, Full Featured DC/DC Converter with Soft-Start and Inrush Current Protection
- LT8471 - Dual Multitopology DC/DC Converters with 2A Switches and Synchronization
- LT1371 - 500kHz High Efficiency 3A Switching Regulator
Product Notifications
Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.
Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.
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:
LT3436
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.
