ACE345 Datasheet, PDF (1/8 Pages) ACE Technology Co., LTD. – Adjustable USB Load Current Switch

ACE345
Adjustable USB Load Current Switch
Description
The ACE345 is Adjustable USB Load Current Switch Current Limited designed for high-side load
switching applications. The internal current-limiting circuit protects the input supply against large output
short circuit current which may cause the supply to fall out of regulation.
The current limit threshold is programmed with an external resistor from ISET Pin to ground. The
quiescent supply current is typically 150μA, making the device ideal for portable battery-operated
equipment. In shutdown mode, the supply current decreases to less than 0.1μA.
Additional features include thermal shutdown and constant current output characteristics if current
exceed its current limit
Features
 2.5 to 5.5V input voltage range
 Controlled turn-on
 0.15-1.5A adjustable current limit
 +/-6% current limit accuracy
 0.1ohm on resistance
 Fast current limit response time
 Logic Control Shutdown (IQ<1uA)
 Thermal shutdown and UVLO
 Reverse current blocking
Application
 Portable Devices
 MID, MP4…
 Set top boxes
 Notebook and PC mother board
 USB supplied Devices
Absolute Maximum Ratings
Parameter
Max Unit
Max Input Voltage
6V
Max Operating Junction Temperature(T_J) 125 ℃
Ambient Temperature(T_A)
-40~85 ℃
Maximum Power Dissipation
250 _mW
Storage Temperature(T_S)
-40~150 _℃
ESD (HBM)
>4000 V
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.
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