AL17150-10B HIGH VOLTAGE STEP-DOWN SWITCHER UP TO 300mA OUTPUT CURRENT Description Pin Assignments The AL17150-10B is a universal high voltage input step-down (Top View) regulator product family, which provides accurate Constant Voltage (CV) and outstanding dynamic performance without requiring an opto- coupler over line and load regulation. Typical applications are offline low power applications including connected LED lighting power NC 1 7 Drain supply for micro-controllers and other IoT applications. NC 2 The AL17150-10B integrates a 500V/1A MOSFET that can make it use fewer external components and create a low Bill Of Material FB S 3 6 (BOM) cost solution. The AL17150-10B can provide up to 300mA output current and lower than 50mW standby power, which is very S 5 VCC 4 suitable for IoT connected lighting devices. The AL17150-10B achieves excellent regulation and high power SO-7 efficiency. The characteristics of max peak current and driving frequency vary as the load change, which can get excellent efficiency performance at light load and improve the overall average efficiency. Applications The AL17150-10B has rich protection features to enhance the system safety and reliability. It has Over Temperature Protection, V Under CC IoT Connected Lighting Applications Voltage Lock function, Output Short Protection, Over Load Protection Home Appliance Applications and Open Loop Protection. Industrial Controls Standby and Auxiliary The AL17150-10B is available in SO-7 package. Features Universal 85 to 265 VAC Input Range Internal MOSFET: 500V/1A Tight V tolerance 4% FB Maximum 300mA Rated Output Current No Load Power Consumption: < 50mW with External Bias Frequency Modulation to Suppress EMI Under Voltage Lock Out (UVLO) Output Short Protection Over Load Protection Thermal Shutdown (TSD) Fewer Components Low Audible Noise Solution SO-7 Package 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, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. AL17150-10B Typical Applications Circuit R1 FB L1 D4 RF1 D1 C4 L VCC Drain R2 C5 C3 VO+ L2 S AL17150-10B C1 C2 R3 C6 D3 D2 N VO- Pin Descriptions Pin Number Name Function 1, 2 N/C Not Connected. 3, 4 S Internal Power MOSFET Source. Ground Reference for VCC and FB Pins. Connection Point of External Bypass Capacitor for Internally Generated Control Circuit 5 VCC Power Supply. 6 FB Regulator Feedback. 7 Drain Internal Power MOSFET Drain. High-Voltage Current Source Input. Functional Block Diagram 5 7 VCC Power Drain Driver Logic V REF FB CS Limit Control R V CS LIMIT 6 3, 4 FB Protection S 2 of 13 AL17150-10B October 2019 Diodes Incorporated www.diodes.com Document number: DS41338 Rev. 1 - 2 NEW PRODUCT