LP8758A2EAYFFR

The LP8758-EA is designed to meet the power management requirements of low-power processors in applications such as mobile phones and network interface cards. The device integrates four step-down DC-DC converter cores, providing four output voltage rails. It is controlled via an I2C-compatible serial interface. Automatic PWM-PFM (AUTO mode) operation maximizes efficiency across a wide output current range. The LP8758-EA supports programmable power-up and power-down sequencing synchronized with hardware enable input signals. Protection features include short-circuit protection, current limiting, input power UVLO, and over-temperature warning and shutdown. The device also provides fault flags for status reporting. In addition, the LP8758-EA supports load current measurement without external current-sense resistors. During startup and voltage transitions, the device controls the slew rate to minimize output voltage overshoot and inrush current.

Applications

• Optical modules
• Drone systems
• Smartphones, e-readers, and tablets
• Solid-state drives

Key features

• Fully integrated quad buck converter, each with programmable maximum output current up to 4A
• Auto PWM-PFM and forced PWM operation
• Programmable output voltage slew rate range: 30mV/µs to 0.5mV/µs
• Input voltage range: 2.5V to 5.5V
• VOUT range: 0.5V to 3.36V with DVS
• Programmable startup and shutdown sequencing via enable signals
• I2C-compatible interface supporting Standard (100kHz), Fast (400kHz), Fast+ (1MHz), and High-Speed (3.4MHz) modes
• Interrupt function with programmable masking
• Load current measurement
• Output short-circuit and overload protection
• Spread spectrum mode for reduced EMI
• Four buck cores operating 90° out of phase to reduce input ripple current
• Overtemperature warning and protection
• Undervoltage lockout (UVLO)