AP5101SG-13 Diodes Incorporated

NOT RECOMMENDED FOR NEW DESIGN CONTACT US AP5101 1.5A STEP-DOWN CONVERTER WITH 1.4MHZ SWITCHING FREQUENCY Description Pin Assignments The AP5101 is a current mode step-down converter with a built-in ( T o p V ie w ) power MOSFET to enable smallest solution size power conversion. With the low series resistance power switch, it enables a constant SW 1 8 G N D output current of up to 1.5A over a wide input supply range. The load and line regulation has excellent response time over the operating 2 7 IN BST input voltage and temperature range. 3 6 EN C O M P The AP5101 is self-protected, through a cycle-by-cycle current limiting algorithm and an on chip thermal protection. The AP5101 will provide the voltage conversion with a low count of widely available 4 5 G N D FB standard external components. SO -8 The AP5101 is available in SO-8 package. Features Applications V 4.75 to 22V Distributed Power Systems IN 1.5A Peak Output Current Battery Charger Stable with Low ESR Ceramic Output Capacitors Pre-Regulator for Linear Regulators External compensation WLED Driver Up to 92% Efficiency 0.1A Shutdown Mode Fixed 1.4MHz Frequency Thermal Shutdown Cycle-by-Cycle Over Current Protection Output Adjustable from 0.81V to 15V SO-8: Available in Green Molding Compound (No Br, Sb) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See AP5101 Typical Application Circuit (continiued) C4 10nF Input 4.75V to 22V C1 R4 10uF/25V 100k CERAMIC L1 2 7 4.7uH IN BST 3 1 SW Output EN 3.3V R1 AP5101 1.5A 49.9k 1% 5 FB GND COMP C2 6 22F/6.3V 4,8 R2 D1 C3 CERAMIC 16.2k 1% B340A 3nF X2 R3 5.6k Figure 2. 1.4MHz, 3.3V Output at 1.5A Step-Down Converter 2 of 15 AP5101 February 2020 Diodes Incorporated www.diodes.com Document number: DS32258 Rev. 3 - 3