Sharp LC-40LE732E Service Manual page 41

1. General ICs Information (continued)
• IC9551: Adjustable Current Limited Load Switch with Fault Flag (USB1).
Part number: AAT4614IGU-2-T1
Sharp code: RH-IXD187WJZZY
http://www.google.es/url?q=http://www.analogictech.com/uploads/download.php%3Ftype%3Ddatasheet%26PID%3D156&sa=U&ei=VGjcTuL9B8XQ4QToq4z5DQ&ved=0CB0QFjAG
&usg=AFQjCNEyvSA3IeYT7JGdgULPf6cR6e0FVg
The AAT4614 SmartSwitch is a current limited P-channel MOSFET power
switch designed for high side load switching applications. This switch operates
with inputs ranging from 2.4V to 5.5V, making it ideal for both 3V and 5V
systems. An integrated current-limiting circuit protects the input supply against
large currents which may cause the supply to fall out of regulation. Reverse
current blocking is provided to protect the load switch from reverse current
potentials while the device is shutdown.
The AAT4614 is also protected from thermal overload which is limited by
power dissipation and junction temperatures. Current limit threshold is
programmed with a resistor from SET to ground and may be adjusted for levels
up to 1.4A. The ultra-fast current limit response to a sudden short circuit is a
mere 1μs which reduces the requirements of local supply bypassing. An open
drain FAULT flag signals an over-current or over-temperature condition after a
4ms blanking time to prevent false reporting. Quiescent current is a low 10μA
and the supply current decreases to less than 1μA in shutdown mode.
The AAT4614 is offered in the 8-pin SC70JW, SOT23-6 and SOT23-5 packages, and is specified for operation over the -40°C to
+85°C ambient temperature range.
Features.
• Input Voltage Range: 2.4V to 5.5V.
• Programmable Over-Current Threshold.
• Fast Transient Response:
▪ 1μs Response to Short Circuit.
• Low Quiescent Current.
▪ 10μA Typical while Enabled.
▪ 1μA Max with Switch Off (TA = 25°C).
• 160mΩ Typical RDS(ON).
• Only 2.4V Needed for ON/OFF Control.
• Under-Voltage Lockout.
• Reverse Blocking During Disable.
• 4ms Fault Blanking.
• Fault Flag Open Drain Output (Not Available for SOT23-5 Package).
• Active Hi/Lo Enable Options.
• Over-Temperature Protection.
• 4kV ESD Rating.
• 6-Pin SOT23, 5-Pin SOT23,or 8-Pin SC70JW.
• IC9552: USB 2.0 Hi-Speed Hub Controller
Part number: USB2514B-AEZG
Sharp code: VHI2514BAEZ-1Q
http://pdf1.alldatasheet.com/datasheet-pdf/view/312076/SMSC/USB2514B-AEZG.html
The SMSC USB251x hub is a family of low-power, OEM
configurable, MTT (multi transaction translator)1 hub controller IC
products for embedded USB solutions. The "x" in the part number
indicates the number of downstream ports available. The SMSC
hub supports low-speed, full-speed, and hi-speed (if operating as a
hispeed hub) downstream devices on all of the enabled downstream
ports.
Features
• Full power management with individual or ganged power
control of each downstream port.
• Fully integrated USB termination and pull-up/pulldown
resistors.
• Supports a single external 3.3 V supply source; internal
regulators provide 1.2 V or 1.8 V internal core voltaje.
• On-chip driver for 24 MHz crystal resonator or external 24/48
MHz clock input.
41
LC-40LE732
LC-46LE732