LTC3721-1
PRODUCTIONPush-Pull PWM Controller
- Part Models
- 4
- 1ku List Price
- Starting From $7.40
Overview
- High Efficiency Push-Pull PWM
- 1.5A Sink, 1A Source Output Drivers
- Adjustable Push-Pull Dead-Time
- Adjustable System Undervoltage Lockout and Hysteresis
- Adjustable Leading Edge Blanking
- Low Start-Up and Quiescent Currents
- Current Mode Operation
- Single Resistor Slope Compensation
- VCC UVLO and 25mA Shunt Regulator
- Programmable Fixed Frequency Operation to 1MHz
- Soft-Start, Cycle-by-Cycle Current Limiting and Hiccup Mode Short-Circuit Protection
- 5V, 15mA Low Dropout Regulator
- 16-Pin SSOP and (4mm x 4mm) QFN Packages
The LTC3721-1 push-pull PWM controller provides all of the control and protection functions necessary for compact and highly efficient, isolated power converters. High integration minimizes external component count, while preserving design flexibility.
The robust push-pull output stages switch at half the oscillator frequency. Dead-time is independently programmed with an external resistor. A UVLO program input provides precise system turn-on and turn off voltages. The LTC3721-1 features peak current mode control with programmable slope compensation and leading edge blanking.
The LTC3721-1 features extremely low operating and start-up currents and reliable short-circuit and overtemperature protection. The LTC3721-1 is offered in 16-pin SSOP and (4mm × 4mm) QFN packages.
Applications
- Telecommunications, Infrastructure Power Systems
- Distributed Power Architectures
- Server Power Supplies
- High Density Power Modules
Documentation
Data Sheet 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 |
|---|---|---|---|
| LTC3721EGN-1#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC3721EGN-1#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC3721EUF-1#PBF | 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC3721EUF-1#TRPBF | 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC3721EGN-1#PBF | PRODUCTION | |
| LTC3721EGN-1#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package |
||
| LTC3721EGN-1#PBF | PRODUCTION | |
| LTC3721EGN-1#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG] |
||
| LTC3721EGN-1#PBF | PRODUCTION | |
| LTC3721EGN-1#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3721-1
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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