Device Information
 
 
ISL6729 Printer Friendly Version
 
Low-Cost Single-Ended Current-Mode PWM for Microcontroller-Based Power Converters
 
Datasheets,
Related Docs
& Simulations
DescriptionKey
Features
Parametric
Data
Application
Diagrams
Related
Devices
 
 
Ordering Information
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 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
ISL6729IBZ Active Ind 8 Ld SOIC 1 0.96 PB Free Out of stock Disti-Buy Sample
ISL6729IBZ-T Active Ind 8 Ld SOIC T+R 1 0.96 PB Free Disti-Buy  
ISL6729IUZ Active Ind 8 Ld MSOP 2 1.09 PB Free Disti-Buy Sample
ISL6729IUZ-T Active Ind 8 Ld MSOP T+R 2 1.09 PB Free Disti-Buy  
ISL6729IB InActive Ind 8 Ld SOIC 1 N/A      
ISL6729IB-T InActive Ind 8 Ld SOIC T+R 1 N/A      
ISL6729IU InActive Ind 8 Ld MSOP 1 N/A      
ISL6729IU-T InActive Ind 8 Ld MSOP T+R 1 N/A      
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 ISL6729 pulse width modulating (PWM) current mode controller is designed for power conversion applications that are based on a microcontroller or other device which can generate a digital clock signal at the desired switching frequency. Similar to the ISL684x family of products, the ISL6729 provides the basic current mode PWM control features, but eliminates the error amplifier, the oscillator, and the reference. An external clock signal applied to the oscillator input provides the time base and sets the maximum duty cycle. The reduced feature set is ideal for those applications where a microcontroller is available to provide the monitor and control functions. The analog PWM provides the cycle by cycle peak current mode control, leaving the monitor and control overhead to the microcontroller.

 
  Key Features
 
  • 5V Operation
  • 1A MOSFET gate driver
  • 400ľA startup current
  • 30ns propagation delay current sense to output
  • Fast transient response with peak current mode control
  • Switching frequency to 2MHz
  • 20ns rise and fall times with 1nF output load
  • Maximum Duty Cycle Determined by Clock Input Duty Cycle
  • Tight tolerance current limit threshold
Related Documentation
 
Datasheet(s)   Datasheet(s):
 
  Parametric Data
Control ModePeak Current Mode
UVLO Rising (V)4.5
UVLO Falling (V)4.3
VBIAS (max) (V)7
No-Load Operating Current (mA)3.3
# of PWM Outputs1
FET Driver IOUT (max) (A)1
Max Duty Cycle (%)100
 
  Application Block Diagrams
 
 
 
Applications
 
  • Telecom and Datacom Power
  • Wireless Base Station Power
  • File Server Power
  • Industrial Power Systems
  • PC Power Supplies
  • Isolated Buck and Flyback Regulators
  • Boost Regulators

 

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