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

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

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 LM25017 LM5007 LM5010 LM5010A LM5010A-Q1 LM5018 LM5160-Q1 LM5160A LM5161 LM5165 LM5166
7.5     6     7.5     9     8     6     6     7.5     4.5     4.5     4.5     3     3    
100     42     48     75     75     75     75     100     65     65     100     65     65    
1.25     2.5     1.25     2.5     2.5     2.5     2.5     1.25     2     2     2     1.23     1.23    
90     37     40     73     70     70     70     90     60     60     92     65     65    
0.65     1     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    
50     50     240     50     50     50     50     50     50     50     50     50     50    
1000     1000     1000     800     1000     1000     1000     1000     1000     1000     1000     600     600    
1.75     0.645     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     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)