AP2181A/AP2191A 1.5A SINGLE CHANNEL CURRENT-LIMITED POWER SWITCH Description Pin Assignments The AP2181A and AP2191A are integrated high-side power switches optimized for Universal Serial Bus (USB) and other hot-swap (Top View) applications. This family of devices complies with USB 2.0 and is 1 8 NC GND available with both polarities of Enable input. The AP2181A and AP2191A offer current and thermal limiting and short circuit protection 2 7 OUT IN as well as controlled rise time and undervoltage lockout functionality. A 7ms deglitch capability on the open-drain Flag output prevents false IN 3 6 OUT over-current reporting and does not require any external components. EN 4 5 FLG All devices are available in SO-8, MSOP-8EP, SOT25 and SO-8 U-DFN2018-6 packages. (Top View) Features NC 1 8 GND Single USB Port Power Switches 7 IN 2 OUT Over-Current and Thermal Protection 6 IN 3 OUT 2.1A Accurate Current Limiting EN 4 5 FLG Reverse Current Blocking MSOP-8EP 95m On-Resistance Input Voltage Range: 2.7V to 5.5V (Top View) 0.6ms Typical Rise Time Very Low Shutdown Current: 1A (Max) OUT 1 5 IN Fault Report (FLG) with Blanking Time (7ms Typ) ESD Protection: 4kV HBM, 300V MM GND 2 Active Low (AP2181A) or Active High (AP2191A) Enable FLG 3 4 EN Ambient Temperature Range: -40C to +85C SOT25, SO-8, MSOP-8EP (Exposed Pad), and U-DFN2018-6: SOT25 Available in Green Molding Compound (No Br, Sb) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) (Top View) Halogen and Antimony Free. Green Device (Note 3) UL Recognized, File Number E322375 1 6 GND OUT IEC60950-1 CB Scheme Certified 2 5 IN OUT Applications 3 4 EN FLG Consumer Electronics LCD TV & Monitor, Game Machines Communications Set-Top Box, GPS, Smartphone U-DFN2018-6 Computing Laptop, Desktop, Servers, Printers, Docking Station, HUB 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 AP2181A/AP2191A Typical Applications Circuit AP2191A Enable Active High IN Load Power Supply OUT 2.7V to 5.5V 0.1F 0.1F 10k 10F 120F FLG EN GND ON OFF Available Options Current Limit Recommended Maximum Continuous Part Number Channel Enable Pin (EN) (Typ) Load Current AP2181A 1 Active Low 2.1A 1.5A AP2191A 1 Active High 2.1A 1.5A Pin Descriptions Pin Number Pin Function Name SO-8 MSOP-8EP SOT25 U-DFN2018-6 GND 1 1 2 1 Ground IN 2, 3 2, 3 5 2 Voltage Input Pin (all IN pins must be tied together externally) EN 4 4 4 3 Enable input, active low (AP2181A) or active high (AP2191A) Over-current and over-temperature fault report open-drain flag is active low when FLG 5 5 3 4 triggered OUT 6, 7 6, 7 1 5, 6 Voltage Output Pin (all OUT pins must be tied together externally) NC 8 8 N/A N/A No internal connection recommend tie to OUT pins Exposed Pad Exposed Tab Exposed Tab Exposed Tab It should be connected to GND and thermal mass for enhanced thermal impedance. It should not be used as electrical ground conduction path. 2 of 17 AP2181A/AP2191A May 2018 Diodes Incorporated www.diodes.com Document number: DS37618 Rev. 2 - 2