CS51313

Features:

·Synchronous Switching Regulator Controller for CPU VCORE
·Dual N-Channel MOSFET Synchronous Buck Design
·V2TM Control Topology
·200ns Transient Loop Response
·5-bit DAC with 1.2% Tolerance
·Hiccup Mode Overcurrent Protection
·40ns Gate Rise and Fall Times (3.3nF load)
·65ns Adaptive FET Non-overlap Time
·Adaptive Voltage Positioning
·Power-Good Output Monitors Regulator Output
·VCC Monitor Provides Under Voltage Lockout
·OVP Output Monitors Regulator Output
·Enable Through use of the COMP pin
·+1.23V Reference Voltage Available Externally


Pinout




Specifications

Operating Junction Temperature, T_J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Lead Temperature Soldering Reflow (SMD styles only) . . . . . . . . .60 sec. max above 183°C, 230°C peak
Storage Temperature Range, T_S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  −65° to 150°C
ESD Susceptibility (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV


Description

The CS51313 is a synchronous dual NFET Buck Regulator Controller. It is designed to power the core logic of the latest high performance CPUs. It uses the V2TM control method to achieve the fastest possible transient response and best overall regulation. It incorporates many additional features required to ensure the proper operation and protection of the CPU and Power system. The CS51313 provides the industry's most highly integrated solution, minimizing external component count, total solution size, and cost. The CS51313 is specifically designed to power Intel's Pentium® II processor and includes the following features: 5-bit DAC with 1.2% tolerance, Power-Good output, overcurrent hiccup mode protection, over voltage protection, VCC monitor, Soft Start, adaptive voltage positioning and adaptive FET non-overlap time. A precision reference trimmed to 1% is also externally available for use by other regulators. The CS51313 will operate over an 8.4V to 14V range and is available in 16 lead narrow body surface mount package.