AP2553FDC-7

AP2552/ AP2553/ AP2552A/ AP2553A PRECISION ADJUSTABLE CURRENT-LIMITED POWER SWITCHES Description Pin Assignments The AP2552/53 and AP2552A/53A are single channel precision adjustable current-limited switches optimized for applications that require precision current limiting, or to provide up to 2.1A of (Top View) continuous load current during heavy loads/short circuits. These devices offer a programmable current-limit threshold between 75mA and 2.36A (typ) via an external resistor. Current limit accuracy ±6% can be achieved at high current-limit settings. The rise and fall times are controlled to minimize current surges during turn on/off. OUT 1 ILIM 2 FAULT 3 The devices have fast short-circuit response time for improved overall PAD 6 5 IN GND 4 EN U-DFN2020-6 system robustness. They provide a complete protection solution for applications subject to heavy capacitive loads and the prospect of short circuit, offering reverse current blocking and limiting, over- Top View current, over-temperature and short-circuit protection, as well as controlled rise time and under-voltage lockout functionality. A IN 1 6 OUT GND 2 5 ILIM EN 3 4 FAULT 7ms deglitch capability on the open-drain Flag output prevents false over-current reporting and does not require any external components. AP2552/53 limits the output current to a safe level when the output current exceeds current-limit threshold. AP2552A/53A provides latch-off function during over-current or SOT26 reverse-voltage conditions. All devices are available in SOT26 and U-DFN2020-6 packages. Features Applications  Up to 2.1A Maximum Load Current  Accurate Adjustable Current Limit, 75mA - 2360mA  Set-Top Boxes  LCD TVs & Monitors  Residential Gateways  Laptops, Desktops, Servers, e-Readers, Printers, Docking Stations, HUBs  ±6% Accurate Adjustable Current Limit, 1.63A with RLIM = 15kΩ  Constant-Current (AP2552/53) During Over-Current  Output Latch-Off (AP2552A/53A) at Over-Current  Fast Short-Circuit Response Time: 2µs (typ)  Reverse Current Blocking During Shutdown and Reverse Current Limiting During Enable  Operating Range: 2.7V - 5.5V  Built-in Soft-Start with 3ms Typical Rise Time  Over-Current , Output Over-Voltage and Thermal Protection  Fault Report (FAULT) with Blanking Time  ESD Protection: 2kV HBM, 500V CDM  Active Low (AP2552/52A) or Active High (AP2553/53A) Enable  Ambient Temperature Range: -40ºC to +85°C  SOT26 and U-DFN2020-6 Package: 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)  15kV ESD Protection per IEC 61000-4-2 (with external capacitance) Notes:  UL Recognized, File Number E322375, Vol. 1  1IEC60950-1 CB Scheme Certified 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain