TI LP87334DRHDR

The LP8733xx is designed to meet the power management requirements in industrial applications. This device features two step-down DC/DC converters that can be configured as a single two-phase regulator or two single-phase regulators, two linear regulators, and two general-purpose digital output signals. The device is controlled by an I2C-compatible serial interface and enable signals. The combination of automatic PWM/PFM (AUTO mode) operation and automatic phase increase/decrease provides high efficiency over a wide output current range. The LP8733xx supports remote voltage sensing (differential in two-phase configuration) to compensate for the IR drop between the regulator output and the point of load (POL), thereby improving the accuracy of the output voltage. Additionally, the switching clock can be forced into PWM mode and synchronized with an external clock to minimize interference. The LP8733xx device supports programmable startup, shutdown delay, and timing control (including GPO signals synchronized with the enable signal). During startup and voltage changes, the device controls the output slew rate to minimize output voltage overshoot and inrush current.

• Operating temperature range: -40°C to +125°C ambient temperature
• Input voltage: 2.8V to 5.5V
• Two high-efficiency step-down DC/DC converters:
  • Output voltage: 0.7V to 3.36V
  • Maximum output current of 3A per phase
  • Auto phase add/drop and forced multiphase operation in two-phase configuration
  • Remote differential feedback voltage sensing in two-phase configuration
  • Programmable output voltage slew rate range: 0.5mV/µs to 10mV/µs
  • 2MHz switching frequency with spread spectrum mode for reduced EMI and phase interleaving
• Two LDOs:
  • Input voltage: 2.5V to 5.5V
  • Output voltage: 0.8V to 3.3V
  • Maximum output current of 300mA
• Configurable general-purpose output signals (GPO, GPO2)
• Interrupt function with programmable masking
• Programmable power-good signal (PGOOD)
• Output short-circuit and overload protection
• Overtemperature warning and protection
• OVP and UVLO
• 28-pin, 5mm × 5mm VQFN package with wettable flanks

• Industrial Applications
• Industrial Equipment
• Test and Measurement