Anpec Electronics APL5331
The APL5331 linear regulator is designed to provide a regulated voltage with bi-directional output current for DDR-SDRAM termination voltage. The APL5331 integrates two power transistors to source or sink current up to 3A. It also incorporates current-limit, thermal shutdown and shutdown control functions into a single chip.FEATURES
GENERAL DESCRIPTION
● Provide Bi-direction Current - Sourcing or Sinking Current up to 3A● 1.25V/0.9V Output for DDR I/II
APPLICATIONS
● Fast Transient Response● High Output Accuracy - ±20mV over Load, VOUT Offset and Temperature
● Adjustable Output Voltage by External Resistors
● Current-Limit Protection
● On-Chip Thermal Shutdown
● Shutdown for Standby or Suspend Mode
● Simple SOP-8, SOP-8P with thermal pad, TO-252-5 and TO-263-5 Packages
● Lead Free and Green Devices Available (RoHS Compliant)
APPLICATIONS
● DDR I/II SDRAM Termination● SSTL-2/3 Termination Voltage
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APPLICATIONS
Requiring the Regulator with Bi-directional 3A Current Capability The current-limit circuit limits the short-circuit current. The on-chip thermal shutdown provides protection against any combination of overload that would create excessive junction temperature. The output voltage of APL5331 tracks the voltage at VREF pin. A resistor divider connected to VIN, GND and VREF pins is used to provide a half voltage of VIN to VREF pin.