VR5100 Multi-output DC-DC for COMM Processor

Overview

The VR5100 is a high performance, multi-output DC-DC regulator designed to power single or dual core LS1 processors like LS1012A and LS1024A. It includes three buck regulators, six LDOs and a boost regulator offering a complete power management solution for Network Attached Storage, battery operated Mobile NAS, IoT gateway, Home and factory automation systems.

The VR5100 uses a low quiescent current architecture allowing high efficiency operation at light load extending the battery life. The high frequency operation reduces the total solution to less than 0.5 sqin. The high power QFN package keeps the junction temperature low even at high ambient temperature.

Features

Three adjustable high efficiency buck regulators: 3.8 A, 1.25 A, 1.5 A
- Selectable modes: PWM, PFM, APS
5.0 V, 600 mA boost regulator with PFM or Auto mode
Six adjustable general purpose linear regulators
Input voltage range: 2.8 V to 4.5 V
OTP (One Time Programmable) memory for device configuration
- Programmable start-up sequence and timing
- Selectable output voltage, frequency, soft start
I²C control
Always ON RTC supply and Coin cell charger
DDR reference voltage
-40 °C to +125 °C operating junction temperature

Features

Three adjustable high efficiency buck regulators: 3.8 A, 1.25 A, 1.5 A
- Selectable modes: PWM, PFM, APS
5.0 V, 600 mA boost regulator with PFM or Auto mode
Six adjustable general purpose linear regulators
Input voltage range: 2.8 V to 4.5 V
OTP (One Time Programmable) memory for device configuration
- Programmable start-up sequence and timing
- Selectable output voltage, frequency, soft start
I²C control
Always ON RTC supply and Coin cell charger
DDR reference voltage
-40 °C to +125 °C operating junction temperature

Key Parametrics

MCU Supported

LS1024A
Output Current (A)

2.75
Number of Buck Regulators

3
Number of Boost Regulators

1
Interface and Input Control

I2C / I2C