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

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 Using the LM5017 with the WEBENCH Power Designer

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Parametrics Compare all products in Buck Converter (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
LM5017 LM25010 LM25011 LM25017 LM5007 LM5010 LM5010A LM5010A-Q1 LM5018 LM5160-Q1 LM5160A LM5161 LM5165 LM5166
7.5    6    6    7.5    9    8    6    6    7.5    4.5    4.5    4.5    3    3   
100    42    42    48    75    75    75    75    100    65    65    100    65    65   
1.25    2.5    2.51    1.25    2.5    2.5    2.5    2.5    1.25    2    2    2    1.23    1.23   
90    37    40    40    73    70    70    70    90    60    60    92    65    65   
0.65    1    2    0.65    0.5    1    1    1    0.3    1.5    2    1    0.15    0.5   
1    1    1      1    1    1    1    1    1    1    1    1    1   
50    50    50    240    50    50    50    50    50    50    50    50    50    50   
1000    1000    2000    1000    800    1000    1000    1000    1000    1000    1000    1000    600    600   
1.75    0.645    1.2    1.75    0.5    0.65    0.65    0.65    1.75    2.3    2.3    2.3    0.01    0.01   
Synchronous Rectification
UVLO Adjustable   
Enable    Adjustable Current Limit    Synchronous Rectification    Enable    Enable    Enable    Enable    Synchronous Rectification
UVLO Adjustable   
Enable
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Enable
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Enable
Light Load Efficiency
Synchronous Rectification
UVLO Adjustable   
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    COT with emulated ripple
Constant on-time (COT)   
Constant on-time (COT)    Constant on-time (COT)   
90    99    99    90    99    99    99    99    90    92    92    92    100    100   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 150    -40 to 125
-40 to 150   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 150    -40 to 150   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Automotive    Catalog    Automotive    Catalog    Catalog    Catalog    Catalog   
SO PowerPAD
WSON   
HTSSOP
WSON   
MSOP-PowerPAD    SO PowerPAD
WSON   
VSSOP
WSON   
HTSSOP
WSON   
HTSSOP
WSON   
HTSSOP    SO PowerPAD
WSON   
HTSSOP    WSON    HTSSOP    VSON    VSON   
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WEBENCH® Designer LM5017

  Min   Max Range
Vin  V 9.00 to 100.00V
Vout  V 1.25 to 90.00V
Iout  A ≤ 0.60A
Ambient Temp  °C ≤ 100°C
Isolated Output