LTC1702A
PRODUCTIONDual 550kHz Synchronous 2-Phase Switching Regulator Controller
- Part Models
- 4
- 1ku List Price
- Starting From $7.95
Overview
- Pin Compatible with the LTC1702 with Improved Current Limit Control
- Two Sides Run Out-of-Phase to Minimize CIN
- No External Current Sense Resistors
- Excellent Output Regulation: 1% Total Output Accuracy
- Two Independent Controllers in One Package
- All N-Channel External MOSFET Architecture
- 550kHz Switching Frequency Minimizes External Component Size
- 1A to 25A Output Current per Channel
- High Efficiency over Wide Load Current Range
- Less Than 100µA Shutdown Current
- Small 24-Pin Narrow SSOP Package
The LTC1702A is a dual switching regulator controller optimized for high efficiency with low input voltages. It includes two complete, on-chip,independent switching regulator controllers each designed to drive a pair of external N-channel MOSFETs in a voltage mode feedback,synchronous buck configuration. The LTC1702A uses a constant-frequency, true PWM design switching at 550kHz, minimizing external component size and cost and maximizing load transient performance. The synchronous buck architecture automatically shifts to discontinuous and then to Burst Mode® operation as the output load decreases, ensuring maximum efficiency over a wide range of load currents.
The LTC1702A features an onboard reference trimmed to 0.5% and can provide better than 1% regulation at the converter outputs. Open-drain logic outputs indicate whether either output has risen to within 5% of the final output voltage and an optional latching FAULT mode protects the load if the output rises 15% above the intended voltage. Each channel can be enabled independently; with both channels disabled, the LTC1702A shuts down and supply current drops below 100µA.
Applications
- Microprocessor, DSP Core and I/O Supplies
- Multiple Logic Supply Generator
- Distributed Power Applications
- High Efficiency Power Conversion
Documentation
Data Sheet 1
User Guide 2
Design Note 2
Technical Articles 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 |
|---|---|---|---|
| LTC1702ACGN#PBF | 24-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC1702ACGN#TRPBF | 24-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC1702AIGN#PBF | 24-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC1702AIGN#TRPBF | 24-Lead SSOP (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC1702ACGN#PBF | PRODUCTION | |
| LTC1702ACGN#TRPBF | PRODUCTION | |
| LTC1702AIGN#PBF | PRODUCTION | |
| LTC1702AIGN#TRPBF | PRODUCTION | |
|
Aug 10, 2022 - 22_0177 Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL |
||
| LTC1702ACGN#PBF | PRODUCTION | |
| LTC1702ACGN#TRPBF | PRODUCTION | |
| LTC1702AIGN#PBF | PRODUCTION | |
| LTC1702AIGN#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 |
|---|---|---|
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
| Switching Regulators & Controllers 1 | ||
| LTC3880 | RECOMMENDED FOR NEW DESIGNS | Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC1702
- LTC1702A
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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