AP2553W6-7

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 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. The devices have fast short-circuit response time for improved overall 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, overcurrent, over-temperature and short-circuit protection, as well as controlled rise time and under-voltage lockout functionality. A 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 reverse-voltage conditions. All devices are available in SOT26 and U-DFN2020-6 packages.

Applications

• Set-Top Boxes
• LCD TVs & Monitors
• Residential Gateways
• Laptops
• Desktops
• Servers
• e-Readers
• Printers
• Docking Stations
• HUBs

Key features

• Up to 2.1A Maximum Load Current
• Accurate Adjustable Current Limit, 75mA - 2360mA
• ±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: -40°C to +85°C
• SOT26 and U-DFN2020-6 Package: Available in “Green” Molding Compound (No Br, Sb)
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. “Green” Device
• 15kV ESD Protection per IEC 61000-4-2 (with external capacitance)
• UL Recognized, File Number E322375, Vol. 1
• IEC60950-1 CB Scheme Certified