Device Information
 
 
ISL6522 Printer Friendly Version
 
Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller
 
Datasheets,
Related Docs
& Simulations		DescriptionKey
Features		Parametric
Data		Application
Diagrams		Related
Devices
 
 
Ordering Information
Green/Pb(Lead free) Device  Available in RoHS/Pb-Free
 Buy direct from Intersil  Check distributor inventory  Request samples
Part No. Design-In
Status		 Temp. Package MSL Price
US $		 PB Free
ISL6522CB Active Comm 14 Ld SOIC 1    iBuy Disti-Buy  
ISL6522CB-T Active Comm 14 Ld SOIC T+R 1    iBuy Disti-Buy  
ISL6522CBZ Active Comm 14 Ld SOIC 3   PB Free iBuy Disti-Buy  
ISL6522CBZ-T Active Comm 14 Ld SOIC T+R 3   PB Free iBuy Disti-Buy  
ISL6522CBZA Active Comm 14 Ld SOIC 3   PB Free iBuy Disti-Buy  
ISL6522CBZA-T Active Comm 14 Ld SOIC T+R 3   PB Free iBuy Disti-Buy  
ISL6522CR Active Comm 16 Ld QFN 1    iBuy Disti-Buy Sample
ISL6522CR-T Active Comm 16 Ld QFN T+R 1    iBuy Disti-Buy Sample
ISL6522CRZ Active Comm 16 Ld QFN 3   PB Free iBuy Disti-Buy Sample
ISL6522CRZ-T Active Comm 16 Ld QFN T+R 3   PB Free iBuy Disti-Buy Sample
ISL6522CV Active Comm 14 Ld TSSOP 1    iBuy Disti-Buy Sample
ISL6522CV-T Active Comm 14 Ld TSSOP T+R 1    iBuy Disti-Buy  
ISL6522CVZ Active Comm 14 Ld TSSOP 1   PB Free iBuy Disti-Buy  
ISL6522CVZ-T Active Comm 14 Ld TSSOP T+R 1   PB Free iBuy Disti-Buy  
ISL6522EVAL1 Active   Eval Board N/A    iBuy Disti-Buy  
ISL6522IB Active Ind 14 Ld SOIC 1    iBuy Disti-Buy  
ISL6522IB-T Active Ind 14 Ld SOIC T+R 1    iBuy Disti-Buy  
ISL6522IBZ Active Ind 14 Ld SOIC 3   PB Free iBuy Disti-Buy  
ISL6522IBZ-T Active Ind 14 Ld SOIC T+R 3   PB Free iBuy Disti-Buy  
ISL6522IR Active Ind 16 Ld QFN 1    iBuy Disti-Buy Sample
ISL6522IR-T Active Ind 16 Ld QFN T+R 1    iBuy Disti-Buy Sample
ISL6522IRZ Active Ind 16 Ld QFN 3   PB Free iBuy Disti-Buy Sample
ISL6522IRZ-T Active Ind 16 Ld QFN T+R 3   PB Free iBuy Disti-Buy Sample
ISL6522IRZ-TK Active Ind 16 Ld QFN T+R 3   PB Free iBuy Disti-Buy  
ISL6522IVZ Active Ind 14 Ld TSSOP 1   PB Free iBuy Disti-Buy  
ISL6522IVZ-T Active Ind 14 Ld TSSOP T+R 1   PB Free iBuy Disti-Buy  
ISL6522IV Coming
Soon		 Ind 14 Ld TSSOP 1    iBuy    
ISL6522IV-T Coming
Soon		 Ind 14 Ld TSSOP T+R 1    iBuy    
ISK6522CR InActive -        iBuy    
The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice.
MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020
SMD = Standard Microcircuit Drawing
 
  Description

The ISL6522 provides complete control and protection for a DC-DC converter optimized for high-performance microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronous rectified buck topology. The ISL6522 integrates all of the control, output adjustment, monitoring and protection functions into a single package.

The output voltage of the converter can be precisely regulated to as low as 0.8V, with a maximum tolerance of ±1% over temperature and line voltage variations.

The ISL6522 provides simple, single feedback loop, voltagemode control with fast transient response. It includes a 200kHz free-running triangle-wave oscillator that is adjustable from below 50kHz to over 1MHz. The error amplifier features a 15MHz gain-bandwidth product and 6V/µs slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty ratio ranges from 0–100%.

The ISL6522 protects against overcurrent conditions by inhibiting PWM operation. The ISL6522 monitors the current by using the rDS(ON) of the upper MOSFET which eliminates the need for a current sensing resistor.

 
  Key Features
 
  • Drives two N-Channel MOSFETs
  • Operates from +5V or +12V input
  • Simple single-loop control design
    • Voltage-mode PWM control
  • Fast transient response
    • High-bandwidth error amplifier
    • Full 0–100% duty ratio
  • Excellent output voltage regulation
    • 0.8V internal reference
    • ±1% over line voltage and temperature
  • Overcurrent fault monitor
    • Does not require extra current sensing element
    • Uses MOSFETs rDS(ON)
  • Converter can source and sink current
  • Small converter size
    • Constant frequency operation
    • 200kHz free-running oscillator programmable from 50kHz to over 1MHz
  • 14-lead SOIC and TSSOP package and 16-lead 5x5mm QFN Package
  • QFN Package
    • Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat No Leads-Product Outline.
    • Near Chip-Scale Package Footprint; Improves PCB Efficiency and Thinner in Profile
  • Pb-Free Available (RoHS Compliant)
Related Documentation
 
Datasheet(s)   Datasheet(s):
 
Technical Brief(s)   Technical Brief(s):
 
 
  Parametric Data
VIN (min) (V)2.5
VIN (max) (V)12
VOUT (min) (V).8
VOUT (max) (V)VIN
IOUT (max) (A)25
VBIAS (V)12
IS (min) (mA) 
IS (typ) (mA)5
 
  Application Block Diagrams
 
 
 
Applications
 
  • Power supply for Pentium®, Pentium Pro, PowerPC® and AlphaPC™ microprocessors
  • High-power 5V to 3.xV DC-DC regulators
  • Low-voltage distributed power supplies
 
  Related DevicesParametric Table   Parametric Table
 
 HIP6006 Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller 
 HIP6012 Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller 
 ISL6268 High-Performance Notebook PWM Controller 
 ISL6269 High-Performance Notebook PWM Controller with Bias Regulator and Audio-Frequency Clamp 
 ISL6269A High-Performance Notebook PWM Controller 
 ISL6269B High-Performance Notebook PWM Controller with Audio-Frequency Clamp 
 ISL6341 5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6341A 5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6341B 5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6406 Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6420 Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6420A PWM Controller with Wide VIN, Start-Up into Pre-Bias Load 
 ISL6439 Single Sync Buck PWM Controller for Broadband Gateway Applications 
 ISL6439A Single Sync Buck PWM Controller for Broadband Gateway Applications 
 ISL6520 Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6520A Single Synchronous Buck Pulse-Width Modulation (PWM) controller ISL6520A 
 ISL6520B Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6522A Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller 
 ISL6522B Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller 
 ISL6525 Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller 
 ISL6526 Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6526A Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6527 Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6527A Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6535 Synchronous Buck Pulse-Width Modulator (PWM) Controller 
 ISL6540 Single-Phase Buck PWM Controller with Integrated High Speed MOSFET Driver and Pre-Biased Load Capability 
 ISL6540A Single-Phase Buck PWM Controller with Integrated High Speed MOSFET Driver and Pre-Biased Load Capability 
 ISL6545 5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL6545A 5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller 
 ISL8104 Synchronous Buck Pulse-Width Modulator (PWM) Controller 
 ISL8105 1V to 12V Single-Phase Synchronous Buck Converter PWM Controller with Integrated MOSFET Gate Drivers 
 ISL8105A 1V to 12V Single-Phase Synchronous Buck Converter PWM Controller with Integrated MOSFET Gate Drivers 
 ISL8105B +5V or +12V Single-Phase Synchronous Buck Converter PWM Controller with Integrated MOSFET Gate Drivers, Extended Soft-Start Time 
 ISL8106 Wide VIN, 7V to 25V, Single-Phase PWM Controller with Integrated MOSFET Drivers 
 ISL8107 Single-Phase Pulse-Width Modulation (PWM) Controller with Wide (9V-75V) VIN Range 
 ISL8118 3.3V to 20V Single-Phase PWM Controller with Integrated 2A/4A MOSFET Drivers 

 
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