BCT6553
The BCT6553 power distribution switches are intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered and provide up to 1.5A of continuous load current. These devices offer a programmable current limit threshold between 100mA and 1.7A via an external resistor. The power switch rise and fall times are controlled to minimize current surges during turn on/off.
BCT6553 devices limit the output current to a safe level by using a constant-current mode when the output load exceeds the current limit threshold. An internal reverse-voltage comparator disables the power switch when the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT output asserts low during over-current, thermal shutdown and reverse-voltage conditions.
BCT6553 is available in the Green TDFN2×2-6L and SOT23-6 packages. They are rated over the -40℃to +85℃ temperature range.
FEATURES
Up to 1.5A Maximum Load Current
Meets USB Current Limiting Requirements
Adjustable Current Limit: 100mA to 1.7A
Fast Over-Current Response: 2μs
90mΩ High-side MOSFET
No Reverse Leakage Current of High-side MOSFET
Reverse Input-Output Voltage Protection
Operating Range: 2.5V to 5.5V
Built-In Soft-Start Function
Available in the Green TDFN2×2-6L and SOT23-6 Packages
APPLICATIONS
USB Ports/Hubs
Digital TV
Set-Top Boxes
VOIP Phones
