LT3436
PRODUCTION3A, 800kHz Step-Up Switching Regulator
- Part Models
- 2
- 1ku List Price
- Starting From $4.71
Overview
- Constant 800kHz Switching Frequency
- Wide Operating Voltage Range: 3V to 25V
- High Efficiency 0.1Ω/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
The LT3436 is an 800kHz monolithic boost switching regulator. A high efficiency 3A, 0.1Ω 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
Applications
- DSL Modems
- Portable Computers
- Battery-Powered Systems
- Distributed Power
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT3436EFE#PBF | 16-Lead TSSOP w/ EP | ||
| LT3436EFE#TRPBF | 16-Lead TSSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 18, 2026 - 26_0072 Epoxy Change for Select TSSOP Products |
||
| LT3436EFE#PBF | PRODUCTION | |
| LT3436EFE#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| LT3436EFE#PBF | PRODUCTION | |
| LT3436EFE#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LT3436
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LT3436EFE Demo Board | 3.2V ≤ VIN ≤ to 12V, VOUT = 12V @ up to 2A