Device Information
 
 
ISL6525 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
 iBuy direct from Intersil  iBuy direct - out of stock  Request samples
 Check distributor inventory Green/Pb(Lead free) Device  Available in RoHS/Pb-Free  
Part No. Design-In
Status		 Temp. Package MSL Price
US $		 PB Free
ISL6525CBZ Active Comm 14 Ld SOIC 3 1.44 PB Free Disti-Buy  
ISL6525CBZ-T Active Comm 14 Ld SOIC T+R 3 1.59 PB Free Disti-Buy  
HIP6004E/ISL6525EV1 Coming
Soon		     N/A Contact Us      
ISL6525CB InActive Comm 14 Ld SOIC 1 N/A      
ISL6525CB-T To Be
Discontinued		 Comm 14 Ld SOIC T+R 1 1.59      
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 ISL6525 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 ISL6525 integrates all of the control, output adjustment, monitoring and protection functions into a single package. A programmable delay time for the PGOOD signal makes it especially suitable for the VTT regulation in VRM8.5 applications. The output voltage of the converter can be precisely regulated to as low as 1.20V, with a maximum tolerance of ±1% over temperature and line voltage variations.

The ISL6525 provides simple, single feedback loop, voltage-mode 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% to 100%.

The ISL6525 protects against over-current conditions by inhibiting PWM operation. The ISL6525 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% to 100% Duty Ratio
  • Excellent Output Voltage Regulation
    • 1.20V Internal Reference
    • ±1% Over Line Voltage and Temperature
  • Programmable delay for PGOOD signal
  • Over-Current Fault Monitor
    • Does Not Require Extra Current Sensing Element
    • Uses MOSFETs rDS(ON)
  • Small Converter Size
    • Constant Frequency Operation
    • 200kHz Free-Running Oscillator Programmable from 50kHz to Over 1MHz
  • 14 Pin, SOIC Package
  • Pb-Free Available (RoHS Compliant)
Related Documentation
 
Datasheet(s)   Datasheet(s):
 
Technical Brief(s)   Technical Brief(s):
 
   Other:
 
  Parametric Data
VIN (min) (V)2.5
VIN (max) (V)12
VOUT (min) (V)1.2
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 Various Microprocessors
  • VTT Regulation for VRM8.5
  • High-Power 5V to 3.xV DC-DC Regulators
  • Low-Voltage Distributed Power Supplies
 
  Related DevicesParametric Table   Parametric Table
 
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