LM5017 7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator | TI.com

LM5017 (ACTIVE)

7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator

 

Description

The LM5017 is a 100-V, 600-mA synchronous step-down regulator with integrated high side and low side MOSFETs. The constant on-time (COT) control scheme employed in the LM5017 requires no loop compensation, provides excellent transient response, and enables very high step-down ratios. The on-time varies inversely with the input voltage resulting in nearly constant frequency over the input voltage range. A high voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers.

A peak current limit circuit protects against overload conditions. The undervoltage lockout (UVLO) circuit allows the input undervoltage threshold and hysteresis to be independently programmed. Other protection features include thermal shutdown and bias supply undervoltage lockout (VCC UVLO).

The LM5017 device is available in WSON-8 and HSOP PowerPAD-8 plastic packages.

Features

  • Wide 7.5-V to 100-V Input Range
  • Integrated 100-V High-Side,
    and Low-Side Switches
  • No Schottky Required
  • Constant On-Time Control
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency
  • Intelligent Peak Current Limit
  • Adjustable Output Voltage From 1.225 V
  • Precision 2% Feedback Reference
  • Frequency Adjustable to 1 MHz
  • Adjustable Undervoltage Lockout (UVLO)
  • Remote Shutdown
  • Thermal Shutdown
  • Packages:
    • WSON-8
    • SO PowerPAD™-8
  • Create a Custom Design with WEBENCH Tools

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Parametrics Compare all products in Buck converters (integrated switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Control mode
Duty cycle (Max) (%)
Operating temperature range (C)
Rating
Package Group
Type
LM5017
7.5    
100    
1.25    
90    
0.65    
1    
50    
1000    
1.75    
Over Current Protection
Synchronous Rectification
UVLO Adjustable    
Constant on-time (COT)    
90    
-40 to 125    
Catalog    
SO PowerPAD | 8
WSON | 8    
Converter    

Design tool

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WEBENCH® Designer LM5017

  Min   Max Range
Vin  V 9.0 to 100.0V
Vout  V 1.25 to 90V
Iout  A ≤ 0.6A
Ambient Temp  °C -40 to 125°C


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