CS51313 Datasheet, PDF (1/23 Pages) Cherry Semiconductor Corporation – Synchronous CPU Buck Controller Capable of Implementing Multiple Linear Regulators

CS51313
Synchronous CPU
Buck Controller Capable
of Implementing Multiple
Linear Regulators
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 V²â„¢ 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,
overvoltage protection, V_CC monitor, Soft Start, adaptive voltage
positioning and adaptive FET non−overlap time. A precision reference
trimmed to 1.0% is also externally available for use by other
regulators. The CS51313 will operate over an 8.4 V to 14 V range and
is available in 16 lead narrow body surface mount package.
Features
• Synchronous Switching Regulator Controller for CPU V_CORE
• Dual N−Channel MOSFET Synchronous Buck Design
• V² Control Topology
• 200 ns Transient Loop Response
• 5−Bit DAC with 1.2% Tolerance
• Hiccup Mode Overcurrent Protection
• 40 ns Gate Rise and Fall Times (3.3 nF Load)
• 65 ns Adaptive FET Non−Overlap Time
• Adaptive Voltage Positioning
• Power Good Output Monitors Regulator Output
• V_CC Monitor Provides Undervoltage Lockout
• OVP Output Monitors Regulator Output
• Enable Through Use of the COMP Pin
• +1.23 V Reference Voltage Available Externally
http://onsemi.com
16
1
SO−16
D SUFFIX
CASE 751B
MARKING DIAGRAM
16
CS51313
AWLYWW
1
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
PIN CONNECTIONS
1
V_ID0
V_ID1
V_ID2
V_ID3
V_REF
V_ID4
V_FB
V_OUT
16
COMP
C_OFF
PWRGD
OVP
GATE(L)
GND
GATE(H)
V_CC
ORDERING INFORMATION
Device
Package
Shipping
CS51313GD16
SO−16
48 Units/Rail
CS51313GDR16
SO−16 2500 Tape & Reel
© Semiconductor Components Industries, LLC, 2006
1
July, 2006 − Rev. 8
Publication Order Number:
CS51313/D