MP4057A Single-Stage Single Chip Solution for Smart LED The Future of Analog IC Technology DESCRIPTION FEATURES The MP4057A is a single-chip/single-stage Single-Chip/Single-Stage with LED Driver solution for smart LED applications that can and Power Supply for MCU/Wireless regulate LED current with primary-side Modules regulation (PSR) control and supply power for Fast Start-Up microcontroller units (MCU) and wireless Ultra-Low Standby Loss, Typically Less modules. The MP4057A is the most ideal Than 30mW in No-Load Condition, Optional solution for smart LED lighting because of its Circuit for Less than 15mW at No Load simplest design, fewest external components, 5% Deep Dimming and lowest cost. No Flicker Low Audible Noise The MP4057A achieves a high power factor Valley Switching Mode in CC Mode for and accurate LED current. The proprietary real- Good Efficiency current-control method accurately controls LED current from the primary-side information. The Good Power Factor (PF) (Typically >0.9) MP4057A integrates power-factor correction Good Transient Response and works in valley switching mode to reduce Cycle-by-Cycle Current Limit Protection in MOSFET switching loss. CV Mode Primary-Side Over-Current Protection (OCP) The MP4057A achieves ultra-low standby loss Output Over-Voltage Protection (OVP) and (typically 30mW no-load power) by decreasing Short-Circuit Protection (SCP) the working frequency in standby mode. Under-Voltage Lockout (UVLO) The MP4057 has an integrated charging circuit Thermal Shutdown (160C/100C) at the supply pin for fast start-up without a Available in MSOP-10 and SOIC14 perceptible delay. Packages Based on the information from DIM, the APPLICATIONS MP4057A can operate in two operation modes: constant current (CC) and constant-voltage Zigbee/Bluetooth Smart Lighting (CV). The LED can turn off when the MP4057A DALI or Dmax Dimming Protocol works in CV mode. During the transition All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under between CC and CV, the LED does not flicker, Quality Assurance. MPS and The Future of Analog IC Technology are and the voltage of the MCU/wireless module registered trademarks of Monolithic Power Systems, Inc. does not drop. The MP4057As multiple protection features enhance system reliability and safety greatly. These features include over-voltage protection (OVP), short-circuit protection (SCP), primary- side over-current protection (OCP), brown-out protection, cycle-by-cycle current limiting protection, under-voltage lockout (UVLO), and auto-restart over-temperature protection (OTP). The MP4057A is available in MSOP-10 and SOIC14 packages. MP4057A Rev. 1.01 www.MonolithicPower.com 1 9/29/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved. MP4057A SINGLE-CHIP SOLUTION FOR SMART LED TYPICAL APPLICATION Isolated Flyback Application Non-Isolated Buck-Boost Application MP4057A Rev. 1.01 www.MonolithicPower.com 2 9/29/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved.