ISL6261ACRZ-T

ISL6261ACRZ-T Datasheet

ISL6261A

Part	Datasheet
ISL6261ACRZ-T	ISL6261ACRZ-T (pdf)

Related Parts	Information
ISL6261ACRZ	ISL6261ACRZ
ISL6261AIRZ-T	ISL6261AIRZ-T
ISL6261AIRZ	ISL6261AIRZ

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Data Sheet December 21, 2007 ISL6261A FN6354.2 Single-Phase Core Regulator for Mobile CPUs The ISL6261A is a single-phase buck regulator implementing protocol, with embedded gate drivers. Mobile Voltage Positioning IMVP is a smart voltage regulation technology effectively reducing power dissipation in Pentium processors. The heart of the ISL6261A is the patented R3 Technology , Intersil’s Robust Ripple Regulator modulator. Compared with the traditional multi-phase buck regulator, the R3 Technology has faster transient response. This is due to the R3 modulator commanding variable switching frequency during a load transient. The ISL6261A provides three operation modes the Continuous Conduction Mode CCM , the Diode Emulation Mode DEM and the Enhanced Diode Emulation Mode EDEM . To boost battery life, the ISL6261A changes its operation mode based on CPU mode signals DPRSLRVR and DPRSTP#, and the FDE pin setting, to maximize the efficiency. In CPU active mode, the ISL6261A commands the CCM operation. When the CPU enters deeper sleep mode, the ISL6261A enables the DEM to maximize the efficiency at light load. Asserting the FDE pin of the ISL6261A in CPU deeper sleep mode will enable the EDEM to further decrease the switching frequency at light load and increase the regulator efficiency. A 7-bit Digital-to-Analog Converter DAC allows dynamic adjustment of the core output voltage from 0.300V to 1.500V. The ISL6261A has system voltage accuracy over temperature. A unity-gain differential amplifier provides remote voltage sensing at the CPU die. This allows the voltage on the CPU die to be accurately measured and regulated per IMVP-6 specification. Current sensing can be implemented through either lossless inductor DCR sensing or precise resistor sensing. If DCR sensing is used, an NTC thermistor network will thermally compensates the gain and the time constant variations caused by the inductor DCR change. The ISL6261A provides the power monitor function through the PMON pin. PMON output is a high-bandwidth analog voltage signal representing the CPU instantaneous power. The power monitor function can be used by the system to optimize the overall power consumption, extending battery run time. • Precision single-phase CORE voltage regulator - system accuracy over temperature - Enhanced load line accuracy • Internal gate driver with 2A driving capability • Microprocessor voltage identification input - 7-Bit VID input - 0.300V to 1.500V in 12.5mV steps - Support VID change on-the-fly • Multiple current sensing schemes supported - Lossless inductor DCR current sensing - Precision resistive current sensing • Thermal monitor • Power monitor indicating CPU instantaneous power • User programmable switching frequency • Differential remote voltage sensing at CPU die • Overvoltage, undervoltage, and overcurrent protection • Pb-free RoHS compliant Ordering Information PART Note MARKING TEMP. RANGE PACKAGE PKG. Pb-Free DWG. # ISL6261ACRZ ISL6261 ACRZ -10 to +100 40 Ld 6x6 QFN L40.6x6 ISL6261ACRZ-T* ISL6261 ACRZ -10 to +100 40 Ld 6x6 QFN L40.6x6 Tape and Reel ISL6261AIRZ 6261A IRZ -40 to +100 40 Ld 6x6 QFN L40.6x6 ISL6261AIRZ-T* 6261A IRZ -40 to +100 40 Ld 6x6 QFN L40.6x6 Tape and Reel *Please refer to TB347 for details on reel specifications. 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. 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. R3 Technology is a trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners. Pinout ISL6261A ISL6261A 40 LD QFN PGOOD 3V3 CLK_EN DPRSTP# DPRSLPVR VR_ON VID6 VID5 VID4 VID3 40 39 38 37 36 35 34 33 32 31 FDE 1 PMON 2 RBIAS 3 VR_TT# 4 NTC 5 SOFT 6 OCSET 7 VW 8 COMP 9 FB 10 GND PAD BOTTOM 30 VID2 29 VID1 28 VID0 27 VCCP 26 LGATE 25 VSSP 24 PHASE 23 UGATE 22 BOOT 21 NC 11 12 13 14 15 16 17 18 19 20 VDIFF VSEN RTN DROOP DFB VO VSUM VIN VSS VDD FN6354.2 December 21, 2007 ISL6261A Absolute Maximum Ratings Supply Voltage, VDD to +7V Battery Voltage, VIN. .+28V Boot Voltage BOOT -0.3V to +33V Boot to Phase Voltage BOOT-PHASE . -0.3V to +7V DC .-0.3V to +9V <10ns Phase Voltage PHASE -7V <20ns Pulse Width, 10µJ UGATE Voltage UGATE PHASE-0.3V DC to BOOT .PHASE-5V <20ns Pulse Width, 10µJ to BOOT LGATE Voltage LGATE -0.3V DC to VDD+0.3V -2.5V <20ns Pulse Width, 5µJ to VDD+0.3V All Other Pins -0.3V to VDD +0.3V Open Drain Outputs, PGOOD, VR_TT# to +7V

PDF Datasheet Preview

Data Sheet

December 21, 2007

ISL6261A

FN6354.2

Single-Phase Core Regulator for Mobile CPUs

The ISL6261A is a single-phase buck regulator implementing protocol, with embedded gate drivers. Mobile Voltage Positioning IMVP is a smart voltage regulation technology effectively reducing power dissipation in Pentium processors.

The heart of the ISL6261A is the patented R3 Technology , Intersil’s Robust Ripple Regulator modulator. Compared with the traditional multi-phase buck regulator, the R3 Technology has faster transient response. This is due to the R3 modulator commanding variable switching frequency during a load transient.

The ISL6261A provides three operation modes the Continuous Conduction Mode CCM , the Diode Emulation Mode DEM and the Enhanced Diode Emulation Mode EDEM . To boost battery life, the ISL6261A changes its operation mode based on CPU mode signals DPRSLRVR and DPRSTP#, and the FDE pin setting, to maximize the efficiency. In CPU active mode, the ISL6261A commands the CCM operation. When the CPU enters deeper sleep mode, the ISL6261A enables the DEM to maximize the efficiency at light load. Asserting the FDE pin of the ISL6261A in CPU deeper sleep mode will enable the EDEM to further decrease the switching frequency at light load and increase the regulator efficiency.

A 7-bit Digital-to-Analog Converter DAC allows dynamic adjustment of the core output voltage from 0.300V to 1.500V. The ISL6261A has system voltage accuracy over temperature.

A unity-gain differential amplifier provides remote voltage sensing at the CPU die. This allows the voltage on the CPU die to be accurately measured and regulated per IMVP-6 specification. Current sensing can be implemented through either lossless inductor DCR sensing or precise resistor sensing. If DCR sensing is used, an NTC thermistor network will thermally compensates the gain and the time constant variations caused by the inductor DCR change.

The ISL6261A provides the power monitor function through the PMON pin. PMON output is a high-bandwidth analog voltage signal representing the CPU instantaneous power. The power monitor function can be used by the system to optimize the overall power consumption, extending battery run time.
• Precision single-phase CORE voltage regulator - system accuracy over temperature - Enhanced load line accuracy
• Internal gate driver with 2A driving capability
• Microprocessor voltage identification input
- 7-Bit VID input - 0.300V to 1.500V in 12.5mV steps - Support VID change on-the-fly
• Multiple current sensing schemes supported - Lossless inductor DCR current sensing - Precision resistive current sensing
• Thermal monitor
• Power monitor indicating CPU instantaneous power
• User programmable switching frequency
• Differential remote voltage sensing at CPU die
• Overvoltage, undervoltage, and overcurrent protection
• Pb-free RoHS compliant
Ordering Information

PART

Note

MARKING

TEMP. RANGE

PACKAGE PKG. Pb-Free DWG. #

ISL6261ACRZ ISL6261 ACRZ -10 to +100 40 Ld 6x6 QFN L40.6x6

ISL6261ACRZ-T* ISL6261 ACRZ -10 to +100 40 Ld 6x6 QFN L40.6x6 Tape and Reel

ISL6261AIRZ 6261A IRZ -40 to +100 40 Ld 6x6 QFN L40.6x6

ISL6261AIRZ-T* 6261A IRZ
-40 to +100 40 Ld 6x6 QFN L40.6x6 Tape and Reel
*Please refer to TB347 for details on reel specifications.

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.

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. R3 Technology is a trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

Pinout

ISL6261A

ISL6261A 40 LD QFN

PGOOD 3V3 CLK_EN DPRSTP# DPRSLPVR VR_ON VID6 VID5 VID4 VID3
40 39 38 37 36 35 34 33 32 31

FDE 1 PMON 2 RBIAS 3 VR_TT# 4

NTC 5 SOFT 6 OCSET 7

VW 8 COMP 9

FB 10

GND PAD BOTTOM
30 VID2 29 VID1 28 VID0 27 VCCP 26 LGATE 25 VSSP 24 PHASE 23 UGATE 22 BOOT 21 NC
11 12 13 14 15 16 17 18 19 20

VDIFF VSEN

RTN DROOP

DFB VO

VSUM VIN VSS VDD

FN6354.2

December 21, 2007

ISL6261A

Absolute Maximum Ratings

Supply Voltage, VDD to +7V Battery Voltage, VIN. .+28V Boot Voltage BOOT -0.3V to +33V Boot to Phase Voltage BOOT-PHASE . -0.3V to +7V DC
.-0.3V to +9V <10ns Phase Voltage PHASE -7V <20ns Pulse Width, 10µJ UGATE Voltage UGATE PHASE-0.3V DC to BOOT
.PHASE-5V <20ns Pulse Width, 10µJ to BOOT LGATE Voltage LGATE -0.3V DC to VDD+0.3V
-2.5V <20ns Pulse Width, 5µJ to VDD+0.3V All Other Pins -0.3V to VDD +0.3V Open Drain Outputs, PGOOD, VR_TT# to +7V

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ISL6261ACRZ-T Datasheet file may be downloaded here without warranties.

Datasheet ID: ISL6261ACRZ-T 639171