ISL6537ACR - Intersil

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ISL6537ACR
Manufacturer

Intersil
ChipWorker Part#

CW98965083
Category

Power Management IC
Package

QFN-28
Description

Voltage Mode PWM Controller 0.8V to 5.5V/0.4V to 2.75V/0.8V 28Pin QFN EP
Documentation

Datasheet

ISL6537ACR Global Supplier

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ISL6537ACR Specifications

Attribute	Attribute Value

Part Number	ISL6537ACR
Manufacturer	Intersil
ChipWorker Part#	CW98965083
Category	Power Management IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	28 Pin
Case/Package	QFN-28
Supply Current	7 mA
	expand all
Operating Temperature	0℃ ~ 70℃
Product Lifecycle Status	Obsolete
Packaging	Tube
RoHS	Non-Compliant
Lead-Free Status	Contains Lead

Product Description

The ISL6537A provides a complete ACPI compliant power solution for up to 4 DIMM dual channel DDR/DDR2 Memory systems. Included are both a synchronous buck controller to supply VDDQ during S0/S1 and S3 states. During S0/S1 state, a fully integrated sink-source regulator generates an accurate (VDDQ/2) high current VTT voltage without the need for a negative supply. A buffered version of the VDDQ/2 reference is provided as VREF. A second PWM controller, which requires external MOSFET drivers, is available for regulation of the GMCH Core voltage. An LDO controller is also integrated for the CPU VTT termination voltage regulation and the DAC.
Features
• Generates 5 Regulated Voltages
- Synchronous Buck PWM Controller for DDR VDDQ
- 3A Integrated Sink/Source Linear Regulator with Accurate VDDQ/2 Divider Reference for DDR VTT
- PWM Regulator for GMCH Core
- LDO Regulator for CPU/GMCH VTT Termination
- LDO Regulator for DAC
• ACPI Compliant Sleep State Control
• Glitch-Free Transitions During State Changes
• Integrated VREF Buffer
• VDDQ PWM Controller Drives Low Cost N-Channel MOSFETs
• 250kHz Constant Frequency Operation
- Both PWM Controllers are Phase Shifted 180°
• Tight Output Voltage Regulation
- All Outputs: ±2% Over Temperature
• Fully-Adjustable Outputs with Wide Voltage Range: Down to 0.8V Supports DDR and DDR2 Specifications
• Simple Single-Loop Voltage-Mode PWM Control Design
• Fast PWM Converter Transient Response
• Under and Overvoltage Monitoring
• OCP on the VDDQ Switching Regulator
• Integrated Thermal Shutdown Protection
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Single and Dual Channel DDR Memory Power Systems in ACPI Compliant PCs
• Graphics Cards - GPU and Memory Supplies
• ASIC Power Supplies
• Embedded Processor and I/O Supplies
• DSP Supplies

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- Anti-static packaging
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