Description

The APM5331 is an electronic component model in the IC Chips product category. It is a regulator designed to convert voltage supplies ranging from 1.6V to 6V into a desired output voltage. The regulator can source or sink up to 3A of peak current while regulating the output voltage to within 2% (DDR 1) and 3% (DDR 2) or less. It is commonly used in high-speed memory buses, distributed backplane designs, and as a termination voltage for DDR SDRAM.

Specifications and features

• Supports both DDR 1 (1.25VTT) and DDR 2 (0.9VTT) requirements
• Available in SOP-8, TO-252-5, and TO-263-5 packages
• Capable of sourcing and sinking 3A peak current
• Current-limiting protection
• Thermal protection
• Integrated power MOSFETs
• Generates termination voltages for SSTL-2
• High accuracy output voltage at full-load
• Adjustable VOUT by external resistors
• Minimum external components required
• Shutdown for standby or suspend mode operation with high-impedance output
• RoHS compliant and 100% lead (Pb)-free

Application Scenarios

• DDR memory termination
• Active termination buses
• Supply splitter

Comparison

• Wide range of voltage conversion (1.6V to 6V)
• Sources and sinks 3A peak current
• High accuracy output voltage at full-load
• Supports both DDR 1 and DDR 2 requirements
• Thermal and current-limiting protection

• Requires external voltage divider resistors for adjusting output voltage
• Available in SOP-8, TO-252-5, and TO-263-5 packages, which may limit some board designs