Diodes Incorporated — Analog and discrete power solutions
SOT25

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AL17052

700V Buck Converter with Small Inductor

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Description

The AL17052 is a universal AC high-voltage input step-down converter that provides accurate 5V output and outstanding dynamic performance and load regulation without requiring an opto-coupler over line and load regulation. Typical applications are power supplies for offline low-power IoT (Internet of Things) devices that support WPAN (wireless personal area network) connectivity.

To support always-on requirements of IoT connectivity, the AL17052 features ultra-low standby operation power of 10mW. It also features high conversion efficiency 60% from rectified mains voltage to 5V for 50mA output and 50% at 10mA light loading during IoT system in idle and sleep mode.

With integration of embedded 700V high-voltage MOS switches, the AL17052 is designed with high degree of integration, which requires supporting less electronic components to form minimum e-BOM (bill-of-material) with small form factor package and PCB space.

The AL17052 has rich protection features to enhance the system safety and reliability. It has overtemperature protection, VCC undervoltage lock function, overcurrent protection, overload protection.

The AL17052 is available in the SOT25 package.

Feature(s)

  • Small Inductor (330µH) Operation
  • Ultra-Fast Startup, < 8ms
  • Internal MOSFET up to 700V
  • Fixed Option for Output 5V
  • No-Load Operation Power Less than 10mW
  • High Efficiency 60% at 50mA Output
  • High Light-Load Efficiency 50% at 10mA Output
  • Universal 85 to 300VAC Input Range
  • Supports Low Component-Count Buck Topologies
  • Auto-Restart for Overcurrent and Overload Faults
  • Excellent Load and Line Regulation
  • Fast Transient Response
  • Constant Voltage (CV) Control
  • Undervoltage Lockout (UVLO) Protection for Input Voltage
  • Overcurrent Protection
  • Overload Protection
  • Overtemperature Protection (OTP)
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

  • Home appliance applications
  • IoT applications
  • Industrial controls
  • Low standby power applications

Product Specifications

Product Parameters

RDS(ON) (Max) (Ω) 40
Iout (Max) (mA) 50
StandbyPower (Max) (mW) 20 mW
BVDSS (Min) (V) 700 V
VFB (V) NA
Ipeak (mA), Typ 140
Protection OTP, OLP, SCP
Release Date 202403

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TN1.pdf