Home Power management AC/DC & DC/DC converters (integrated FET)
Home
Power management
AC/DC & DC/DC converters (integrated FET)
NEW

LM72880-Q1

PREVIEW

Automotive, 80V, 8A synchronous step-down converter with I2C

Order now
Data sheet

LM72880-Q1

PREVIEW
Data sheet Order now

Product details

Rating Automotive Topology Buck Iout (max) (A) 8 Vin (max) (V) 80 Vin (min) (V) 4.5 Vout (max) (V) 55 Vout (min) (V) 0.8 Features Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Forced PWM, Frequency synchronization, Low Noise, Over Current Protection, Power good, Soft Start Fixed, Stackable, Thermal shutdown, UVLO adjustable EMI features Spread Spectrum Operating temperature range (°C) -40 to 150 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Iq (typ) (µA) 6.5 Control mode current mode Duty cycle (max) (%) 99 Type Converter
Rating Automotive Topology Buck Iout (max) (A) 8 Vin (max) (V) 80 Vin (min) (V) 4.5 Vout (max) (V) 55 Vout (min) (V) 0.8 Features Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Forced PWM, Frequency synchronization, Low Noise, Over Current Protection, Power good, Soft Start Fixed, Stackable, Thermal shutdown, UVLO adjustable EMI features Spread Spectrum Operating temperature range (°C) -40 to 150 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Iq (typ) (µA) 6.5 Control mode current mode Duty cycle (max) (%) 99 Type Converter
VQFN (RRX) 29 36 mm² 6 x 6
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Synchronous CC-CV buck converter with I2C
    • Wide input voltage range: 4.5V to 80V
      • Meets LV148 / ISO21780 requirements
    • 1% accurate, programmable VOUT from 1V (3.3V) to 24V (48V) in 10mV (20mV) steps
    • 3% accurate, programmable ILIM(avg) from 0.5A (0.8A) to 7.5A (12A) in 50mA (80mA) steps
    • Output slew rate: 0.5mV/µs to 40mV/µs
    • Adjustable cable drop compensation
    • Output active discharge
  • Designed for pairing with TPS2674X-Q1 USB Type-C PD controllers
  • Designed for low EMI requirements
    • Facilitates CISPR 25 Class 5 compliance
    • ±8% dual-random spread spectrum with programmable modulation frequency
    • Programmable fSW: 200kHz to 2.2MHz
    • Programmable PFM or FPWM operation
  • Programmable protection features
    • UV/OV (PG) warning: ±5% or ±10%
    • OVP warning, fault: 5% to 36% in 1% steps
    • Internal hiccup-mode overcurrent protection
    • Enable, interrupt, and thermal shutdown
  • 6mm × 6mm thermally optimized, RoHS compliant, QFN-29 package with Pb-free plating
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Synchronous CC-CV buck converter with I2C
    • Wide input voltage range: 4.5V to 80V
      • Meets LV148 / ISO21780 requirements
    • 1% accurate, programmable VOUT from 1V (3.3V) to 24V (48V) in 10mV (20mV) steps
    • 3% accurate, programmable ILIM(avg) from 0.5A (0.8A) to 7.5A (12A) in 50mA (80mA) steps
    • Output slew rate: 0.5mV/µs to 40mV/µs
    • Adjustable cable drop compensation
    • Output active discharge
  • Designed for pairing with TPS2674X-Q1 USB Type-C PD controllers
  • Designed for low EMI requirements
    • Facilitates CISPR 25 Class 5 compliance
    • ±8% dual-random spread spectrum with programmable modulation frequency
    • Programmable fSW: 200kHz to 2.2MHz
    • Programmable PFM or FPWM operation
  • Programmable protection features
    • UV/OV (PG) warning: ±5% or ±10%
    • OVP warning, fault: 5% to 36% in 1% steps
    • Internal hiccup-mode overcurrent protection
    • Enable, interrupt, and thermal shutdown
  • 6mm × 6mm thermally optimized, RoHS compliant, QFN-29 package with Pb-free plating

The LM72880-Q1 is an 80V, ultra-low IQ, synchronous buck converter with constant-current constant-voltage (CC-CV) regulation and I2C interface. The device is designed to work with the TPS2674X-Q1 USB Type-C PD controllers.

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 LM72880-Q1 also features 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 LM72880-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 LM72880-Q1 converter comes in a 6mm × 6mm thermally-optimized, 29-pin QFN package. The three die-attach pads (VIN, SW, and PGND) improve thermal performance and board level reliability (BLR).

The LM72880-Q1 is an 80V, ultra-low IQ, synchronous buck converter with constant-current constant-voltage (CC-CV) regulation and I2C interface. The device is designed to work with the TPS2674X-Q1 USB Type-C PD controllers.

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 LM72880-Q1 also features 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 LM72880-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 LM72880-Q1 converter comes in a 6mm × 6mm thermally-optimized, 29-pin QFN package. The three die-attach pads (VIN, SW, and PGND) improve thermal performance and board level reliability (BLR).
filter Find other AC/DC & DC/DC converters (integrated FET)
Download View video with transcript Video
Request more information

The full data sheet is available. Request now

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet LM72880-Q1 80V, 5A, 8A, Automotive, High-Efficiency CC-CV Buck Converter With I2C datasheet PDF | HTML 16 Apr 2025
EVM User's guide LM72880-Q1 CC-CV Buck Converter With I2C Evaluation Module PDF | HTML 01 Apr 2025
Certificate LM72880QEVM-400 EU Declaration of Conformity (DoC) 25 Mar 2025

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM72880QEVM-400 — LM72880-Q1 evaluation module

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 (...)

User guide: PDF | HTML
Not available on TI.com
GUI for evaluation module (EVM)

LM72630-LM72650-LM72680-LM72880-GUI — GUI for LM726x0 and LM72880 to set I2C configuration registers

Graphical User Interface (GUI) to configure LM726x0 and LM72880 via I2C. You can use either the online GUI via a browser or the offline GUI.
Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
LM72880-Q1 — Automotive, 80V, 8A synchronous step-down converter with I2C
Launch Download options
Design tool

LM72880-DESIGN — Design Resources for LM72880-Q1

Datasheet and design tools for LM72880-Q1
Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
LM72880-Q1 — Automotive, 80V, 8A synchronous step-down converter with I2C
Hardware development
Evaluation board
LM72880QEVM-400 — LM72880-Q1 evaluation module
Request
Package Pins CAD symbols, footprints & 3D models
VQFN (RRX) 29 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos