LTC1430
PRODUCTIONHigh Power Step-Down Switching Regulator Controller
- Part Models
- 6
- 1ku List Price
- Starting From $5.31
Overview
- High Power 5V to 3.xV Switching Controller:
Can Exceed 10A Output - All N-Channel External MOSFETs
- Constant Frequency Operation - Small Inductors
- Excellent Output Regulation: ±1% Over Line, Load and Temperature Variations
- High Efficiency: Over 95% Possible
- Fixed Frequency Operation
- No Low Value Sense Resistor Needed
- Outputs Can Drive External FETs with Up to 10,000pF Gate Capacitance
- Quiescent Current: 350µA Typ, 1µA in Shutdown
- Fast Trasient Response
- Adjustable or fixed 3.3 V Output
- Available in 8- and 16- Lead PDIP and SO Packages
The LTC1430 is a high power, high efficiency switching regulator controller optimized for 5V to 3.xV applications. It includes a precision internal reference and an internal feedback system that can provide output regulation of ±1% over temperature, load current and line voltage shifts. The LTC1430 uses a synchronous switching architecture with two N-channel output devices, eliminating the need for a high power, high cost P-channel device. Additionally, it senses output current across the drain-source resistance of the upper N-channel FET, providing an adjustable current limit without an external low value sense resistor.
The LTC1430 includes a fixed frequency PWM oscillator for low output ripple under virtually all operating conditions. The 200kHz free-running clock frequency can be externally adjusted from 100kHz to above 500kHz. The LTC1430 features low 350µA quiescent current, allowing greater than 90% efficiency operation in converter designs from 1A to greater than 50A output current. Shutdown mode drops the LTC1430 supply current to 1µA.
For new designs, refer to the LTC3830.
Applications
- Power Supply for P6 and Pentium® Microprocessors
- High Power 5V to 3.xV Regulators
- Local Regulation for Dual Voltage Logic Boards
- Low Voltage, High Current Battery Regulation
Documentation
Data Sheet 1
Application Note 2
Design Note 1
Technical Articles 4
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 |
|---|---|---|---|
| LTC1430CS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1430CS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1430CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1430CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1430IS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1430IS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
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| LTC1430CS#PBF | PRODUCTION | |
| LTC1430CS#TRPBF | PRODUCTION | |
| LTC1430IS#PBF | PRODUCTION | |
| LTC1430IS#TRPBF | PRODUCTION | |
|
Dec 14, 2023 - 22_0252 Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package |
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| LTC1430CS#PBF | PRODUCTION | |
| LTC1430CS#TRPBF | PRODUCTION | |
|
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
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| LTC1430CS8#PBF | PRODUCTION | |
| LTC1430CS8#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
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| LTC1430CS8#PBF | PRODUCTION | |
| LTC1430CS8#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0252 Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package |
||
| LTC1430IS#PBF | PRODUCTION | |
| LTC1430IS#TRPBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0173 Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG] |
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| LTC1430IS#PBF | PRODUCTION | |
| LTC1430IS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC3830 | PRODUCTION | High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC1430
- LTC1430A
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.
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