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LM3489QMMX

  

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TI
Texas Instruments
LM3489QMMX Hysteretic PFET Buck Controller With Enable Pin

DESCRIPTION
The LM3489 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultra-low dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. A dedicated Enable Pin provides a shutdown mode drawing only 7µA. Leaving the Enable Pin unconnected defaults to on.

FEATURES
• Easy to use control methodology
• No control loop compensation required
• Wide 4.5V to 35V input range
• 1.239V to VIN adjustable output range
• High efficiency 93%
• ±1.3% (±2% over temp) internal reference
• 100% duty cycle operation
• Maximum operation frequency > 1MHz
• Current limit protection
• Dedicated enable pin (on if unconnected)
• Shutdown mode draws only 7µA supply current
• VSSOP-8
• LM3489 is AEC-Q100 Grade 1 qualified

APPLICATIONS
• Set-Top Box
• DSL or Cable Modem
• PC/IA
• Auto PC
• TFT Monitor
• Battery Powered Portable Applications
• Distributed Power Systems
• Always On Power
• High Power LED Driver
• Automotive


other parts : LM3489  LM3489-Q1  LM3489MM  LM3489MM/NOPB  LM3489MMX  LM3489MMX/NOPB  LM3489QMM  LM3489QMM/NOPB  LM3489QMMX/NOPB  
LM3489QMMX PDF
National-Semiconductor
National ->Texas Instruments
LM3489QMMX Hysteretic PFET Buck Controller with Enable Pin

General Description
The LM3489 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability concerns using a wide variety of external components. The PFET ar chitecture also allows for low component count as well as ultra-low dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. A dedicated Enable Pin provides a shutdown mode drawing only 7µA. Leaving the Enable Pin unconnected defaults to on.

Features
Easy to use control methodology
No control loop compensation required
Wide 4.5V to 35V input range
1.239V to VIN adjustable output range
High efficiency 93%
±1.3% (±2% over temp) internal reference
100% duty cycle operation
Maximum operation frequency > 1MHz
Current limit protection
Dedicated enable pin (on if unconnected)
Shutdown mode draws only 7µA supply current
MSOP-8
LM3489 is AEC-Q100 Grade 1 qualified

Applications
Set-Top Box
DSL/Cable Modem
PC/IA
Auto PC
TFT Monitor
Battery Powered Portable Applications
Distributed Power Systems
Always On Power
High Power LED Driver
Automotive


other parts : LM3489  LM3489MM  LM3489MMX  LM3489Q  LM3489QMM  
LM3489QMMX PDF
TI
Texas Instruments
LM3489QMMX/NOPB Hysteretic PFET Buck Controller With Enable Pin

DESCRIPTION
The LM3489 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultra-low dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. A dedicated Enable Pin provides a shutdown mode drawing only 7µA. Leaving the Enable Pin unconnected defaults to on.

FEATURES
• Easy to use control methodology
• No control loop compensation required
• Wide 4.5V to 35V input range
• 1.239V to VIN adjustable output range
• High efficiency 93%
• ±1.3% (±2% over temp) internal reference
• 100% duty cycle operation
• Maximum operation frequency > 1MHz
• Current limit protection
• Dedicated enable pin (on if unconnected)
• Shutdown mode draws only 7µA supply current
• VSSOP-8
• LM3489 is AEC-Q100 Grade 1 qualified

APPLICATIONS
• Set-Top Box
• DSL or Cable Modem
• PC/IA
• Auto PC
• TFT Monitor
• Battery Powered Portable Applications
• Distributed Power Systems
• Always On Power
• High Power LED Driver
• Automotive


other parts : LM3489  LM3489-Q1  LM3489MM  LM3489MM/NOPB  LM3489MMX  LM3489MMX/NOPB  LM3489QMM  LM3489QMM/NOPB  LM3489QMMX  
LM3489QMMX/NOPB PDF

1

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