LTC3830
PRODUCTIONHigh Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation
- Part Models
- 8
- 1ku List Price
- Starting From $4.64
Overview
- High Power Switching Regulator Controller for 3.3V-5V to 1.xV-3.xV Step-Down Applications
- No Current Sense Resistor Required
- Low Input Supply Voltage Range: 3V to 8V
- Maximum Duty Cycle >91% Over Temperature
- All N-Channel External MOSFETs
- Excellent Output Regulation: ±1% Over Line, Load and Temperature Variations
- High Efficiency: Over 95% Possible
- Adjustable or Fixed 3.3V Output (16-Pin Version)
- Programmable Fixed Frequency Operation: 100kHz to 500kHz
- External Clock Synchronization
- Soft-Start (16-Pin Version and LTC3830-1)
- Low Shutdown Current: <10µA
- Overtemperature Protection
- Available in S8, S16 and SSOP-16 Packages
The LTC3830/LTC3830-1 are high power, high efficiency switching regulator controllers optimized for 3.3V-5V to 1.xV-3.xV step-down applications. A precision internal reference and feedback system provide ±1% output regulation over temperature, load current and line voltage variations. The LTC3830/LTC3830-1 use a synchronous switching architecture with N-channel MOSFETs. Additionally, the chip senses output current through the drain-source resistance of the upper N-channel FET, providing an adjustable current limit without a current sense resistor.
The LTC3830/LTC3830-1 operate with an input supply voltage as low as 3V and with a maximum duty cycle of >91% over temperature. They include a fixed frequency PWM oscillator for low output ripple operation. The 200kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to 500kHz. In shutdown mode, the LTC3830 supply current drops to <10µA. The LTC3830-1 differs from the LTC3830 S8 version by replacing shutdown with a soft-start function.
For a similar, pin compatible DC/DC converter with an output voltage as low as 0.6V, please refer to the LTC3832.
Applications
- CPU Power Supplies
- Multiple Logic Supply Generator
- Distributed Power Applications
- High Efficiency Power Conversion
Documentation
Data Sheet 1
User Guide 2
Technical Articles 1
LT Journal 1
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 |
|---|---|---|---|
| LTC3830-1ES8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC3830-1ES8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC3830EGN#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC3830EGN#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC3830ES#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC3830ES#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC3830ES8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC3830ES8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LTC3830-1ES8#PBF | PRODUCTION | |
| LTC3830-1ES8#TRPBF | PRODUCTION | |
| LTC3830ES8#PBF | PRODUCTION | |
| LTC3830ES8#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LTC3830-1ES8#PBF | PRODUCTION | |
| LTC3830-1ES8#TRPBF | PRODUCTION | |
| LTC3830ES8#PBF | PRODUCTION | |
| LTC3830ES8#TRPBF | PRODUCTION | |
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC3830EGN#PBF | PRODUCTION | |
| LTC3830EGN#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package |
||
| LTC3830EGN#PBF | PRODUCTION | |
| LTC3830EGN#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG] |
||
| LTC3830EGN#PBF | PRODUCTION | |
| LTC3830EGN#TRPBF | PRODUCTION | |
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LTC3830ES#PBF | PRODUCTION | |
| LTC3830ES#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0252 Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package |
||
| LTC3830ES#PBF | PRODUCTION | |
| LTC3830ES#TRPBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0173 Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG] |
||
| LTC3830ES#PBF | PRODUCTION | |
| LTC3830ES#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
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Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC3830
- LTC3830-1
- LTC3830ES8
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
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