NCP5220
NCP5220 is PWM Dual Buck and Linear Power Controller manufactured by onsemi.
features include, soft- start circuitry, undervoltage monitoring of 5VDUAL, BOOT voltage and thermal shutdown. The device is housed in a thermal enhanced space- saving DFN- 20 package.
Features
- Pb- Free Package is Available-
- Incorporates Synchronous PWM Buck Controllers for VDDQ and
VMCH
- Integrated Power FETs with VTT Regulator Source/Sink up to 2.0 A
- All External Power MOSFETs are N- Channel
- Adjustable VDDQ and VMCH by External Dividers
- VTT Tracks at Half the Reference Voltage
- Fixed Switching Frequency of 250 k Hz for VDDQ and VMCH
- Doubled Switching Frequency of 500 k Hz for VDDQ Controller in
Standby Mode to Optimize Inductor Current Ripple and Efficiency
- Soft- Start Protection for All Controllers
- Undervoltage Monitor of Supply Voltages
- Overcurrent Protections for DDQ and VTT Regulators
- Fully plies with ACPI Power Sequencing Specifications
- Short Circuit Protection Prevents Damage to Power Supply Due to
Reverse DIMM Insertion
- Thermal Shutdown
- 5x6 DFN- 20 Package
Typical Applications
- DDR I and DDR II Memory and MCH Power Supply http://onsemi.
MARKING
DIAGRAM
DFN- 20 MN SUFFIX CASE 505AB
NCP5220 AWLYYWW
NCP5220 = Specific Device Code
= Assembly Location
= Wafer Lot
= Year
WW = Work Week
PIN CONNECTIONS
P FBDDQ
SS...
