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).