The LM72630-Q1 is a 70V, synchronous buck converter with constant-current constant-voltage (CC-CV) regulation and I2C interface. The device is compatible with USB Type-C PD controllers including the TPS2674X-Q1 family.
The converter uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. The highly accurate CC-CV operation enables seamless transition between constant-current and constant-voltage modes. The I2C interface allows programming of output voltage in 10mV or 20mV steps, average output current limit in 50mA steps, as well as output voltage slew rate, switching frequency, soft-start slew rate, mode of operation, current loop compensation, output active discharge strength, and cable drop compensation gain.
The LM72630-Q1 also contains an array of safety features including undervoltage and overvoltage protection with programmable thresholds, overcurrent protection with programmable hiccup mode, and thermal shutdown.
Additional features of the LM72630-Q1 include programmable diode emulation for lower current consumption at light-load conditions, open-drain nINT flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated dual input (VIN and VOUTF) VCC supply regulator, and oversized VDDA regulator for powering external loads, such as companion USB PD controllers.
The LM72630-Q1 converter comes in a 6mm × 6mm thermally-optimized, 29-pin VQFN package. The three die-attach pads (VIN, SW, and PGND) improve thermal performance and board level reliability (BLR).
The LM72630-Q1 converter belongs to a family of synchronous buck converters with constant-current constant-voltage (CC-CV) regulation and I2C interface listed in Related Products.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LM72630-Q1 70V, 3A, Automotive, High-Efficiency CC-CV Buck Converter With I2C datasheet | PDF | HTML | 17 Jul 2026 |
| Functional safety information | LM726X0-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 26 May 2026 | |
| EVM User's guide | LM72880-Q1 CC-CV Buck Converter With I2C Evaluation Module (Rev. A) | PDF | HTML | 27 Jun 2025 | |
| EVM User's guide | LM72650QEVM CC-CV Buck Converter Evaluation Module | PDF | HTML | 26 Jun 2025 |
For additional terms or required resources, click any title below to view the detail page where available.
The LM72650QEVM evaluation module (EVM) is a synchronous, buck DC/DC regulator using the LM72650. The EVM is capable of constant-current constant-voltage (CC-CV) regulation with I2C interface. The EVM operates over a wide input voltage range of 24V to 70V, providing maximum 5A in CC mode and (...)
The LM72880-Q1 evaluation module (EVM) is a synchronous, buck DC/DC regulator which is capable of constant-current constant-voltage (CC-CV) regulation with I2C interface. The EVM operates over a wide input voltage range of 24V to 70V (at J4 VIN terminal), providing maximum 5A in CC mode and maximum (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RRX) | 29 | Ultra Librarian |
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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LM726x0_LM72880_1.0.0_installer_linux.zip
LM726x0_LM72880_1.0.0_installer_osx.zip
LM726x0_LM72880_1.0.0_installer_win.zip
GUI for LM726x0 and LM72880 to set I2C configuration registers
Welcome to the LM72xxx synchronous buck regulator with I2C design tool. This stand-alone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on LM72xxx synchronous buck regulator with I2C. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.