LP5552TL

• Efficient PowerWise adaptive technology voltage regulation in AVS and DVS environmental smart energy management
• PWI 2.0 opens the standard interface for system-level power management
• Power supply dual voltage domains of two digitally programmable 3.6MHz step-down regulators
• Fifth, such as programmable LDO system functions:
• PLL/clock generation
• I / O
• memory
• Internal soft start
• Sequenced variable regulated power supply

illustrate

The LP5552 Energy Management Unit is a PWI ™ The 2.0 Energy Management Unit (EMU) is designed to reduce power consumption in low-power, portable applications.

The LP5552 Energy Management Unit contains variable voltage power supply to 2 advanced SoCs or processors, digitally controlled switching regulators. The device also integrates five programmable low-dropout, low-noise linear regulators for driving I/O, peripheral logic blocks, auxiliary system functions, and keeping memory in shutdown mode (dual domain).

The device controls the high-speed serial PWI 2.0 open standard interface. Operates in partnership with PowerWise of the LP5552 Energy Management Unit ® Technology-compatible processors to optimize supply voltage adaptability (AVS - Adaptive Voltage Scaling) to process and temperature changes. It also supports dynamic voltage scaling (DVS) using pre-characterized lookup table frequency/voltage pairs.

Main specifications

• 2.7V to 4.8V input voltage range
• ± 2% (typical) output voltage accuracy
• 800mA output current per switch
• Up to 88% switching efficiency
• Digitally programmable from 0.6V to 1.235V
• Five digitally programmable LDOs

apply

• GSM/GPRS/EDGE and UMTS cellular phones
• Handheld radio stations
• Pocket PC
• Battery-powered devices
• Portable instrument