ChongMing Group (HK) Int'l Co., Ltd
CHONGMING GROUP (HK) INT'L CO., LTD.
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TPS2557DRBR TPS2556 Ethernet Switch IC Power Distribution Prec Adj Current-Ltd Pwr-Dist Sw
1 Features
Adjustable Current Limit, 500 mA to 5 A (Typical)
±6.5% Current-Limit Accuracy at 4.5 A
Fast Overcurrent Response: 3.5-μs (Typical)
22-mΩ High-Side MOSFET
Operating Voltage: 2.5 V to 6.5 V
2-μA Maximum Standby Supply Current
Built-in Soft Start
15-kV and 8-kV System-Level ESD Capable
UL Listed: File No. E169910 and CB IEC60950-1- am2 ed2.0
2 Applications
USB Ports and Hubs
Digital TVs
Set-Top Boxes
VOIP Phones
3 Description
The TPS255x power-distribution switch is intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered. These devices offer a programmable current-limit threshold between 500 mA and 5 A (typical) through an external resistor. The power-switch rise and fall times are controlled to minimize current surges during turnon and turnoff.
TPS255x devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. The FAULT logic output asserts low during overcurrent and overtemperature conditions.
Device Information
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
| TPS2556, TPS2557 | VSON (8) | 3.00 mm × 3.00 mm |