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ISL6264CRZ Datasheet(PDF) 1 Page - Intersil Corporation

Part # ISL6264CRZ
Description  Two-Phase Core Controller for AMD Mobile Turion CPUs
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6264CRZ Datasheet(HTML) 1 Page - Intersil Corporation

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1
®
FN6359.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL6264
Two-Phase Core Controller for AMD
Mobile Turion CPUs
The ISL6264 is a two-phase buck converter regulator with
embedded gate drivers. The two-phase buck converter uses
two interleaved channels to effectively double the output
voltage ripple frequency and thereby reduce output voltage
ripple amplitude with fewer components, lower component
cost, reduced power dissipation, and smaller real estate
area. ISL6264 can also be configured as single-phase
controller for low power CPU applications.
The heart of the ISL6264 is the patented R3 Technology
™,
Intersil’s Robust Ripple Regulator modulator. Compared with
the traditional multi-phase buck regulator, the R3
Technology
™ has the fastest transient response. This is due
to the R3 modulator commanding variable switching
frequency during a load transient.
To boost battery life, the ISL6264 supports PSI_L for deeper
sleep mode via automatically enabling different operation
modes. At heavy load operation of the active mode, the
regulator commands the two phase continuous conduction
mode (CCM) operation. While the PSI_L is asserted during
the deeper sleep mode, the ISL6264 smoothly disables one
phase and operates in a one-phase diode emulation mode
(DE) to maximize the efficiency at light load.
A 6-bit digital-to-analog converter (DAC) allows dynamic
adjustment of the core output voltage from 0.375V to 1.55V.
A 0.5% system accuracy of the core output voltage over
temperature at active mode is achieved by the ISL6264.
A unity-gain differential amplifier is provided for remote CPU
die sensing. This allows the voltage on the CPU die to be
accurately measured and regulated per AMD mobile CPU
specifications. Current sensing can be realized using either
lossless inductor DCR sensing or precision resistor sensing.
A single NTC thermistor network thermally compensates the
gain and the time constant of the DCR variations.
Features
• Precision Two-phase Core Voltage Regulator
- 0.5% system accuracy over temperature
• Voltage positioning with Adjustable Load Line and Offset
• Internal Gate Driver with 2A Driving Capability
• Dynamic Phase Adding/Dropping
• Differential Current Sensing: DCR or resistor
• Microprocessor Voltage Identification Input
- 6-Bit VID Input
- 0.775V to 1.55V in 12.5mV Steps
- 0.375V to 0.7625V in 25mV Steps
• Adjustable Reference-Voltage Offset
• Audio Filter Enable/Disable
• User Programmable Switching Frequency
• Differential Remote CPU Die Voltage Sensing
• Static and Dynamic Current Sharing
• Overvoltage, Undervoltage, and Overcurrent Protection
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
TEMP (°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL6264CRZ
ISL6264CRZ -10 to +100 40 Ld 6x6 QFN L40.6x6
ISL6264CRZ-T ISL6264CRZ -10 to +100 40 Ld 6x6 QFN L40.6x6
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Data Sheet
October 16, 2006


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