LM5010A (ACTIVE)

6-75V Wide Vin, 1A Constant On-Time Non-Synchronous Buck Regulator

 

Description

The LM5010Ax step-down switching regulator is an enhanced version of the LM5010 with the input operating range extended to 6-V minimum. The LM5010Ax features all the functions needed to implement a low-cost, efficient, buck regulator capable of supplying in excess of 1-A load current. This high-voltage regulator integrates an N-Channel Buck Switch, and is available in thermally enhanced 10-pin WSON and 14-pin HTSSOP packages. The constant ON-time regulation scheme requires no loop compensation resulting in fast load transient response and simplified circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the ON-time. The valley current limit detection is set at 1.25 A. Additional features include: VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.

Features

  • LM5010A-Q1 Qualified for Automotive
    Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device Temperature Grade 0: –40°C to 150°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Wide 6-V to 75-V Input Voltage Range
  • Valley Current Limit at 1.25 A
  • Programmable Switching Frequency Up To 1 MHz
  • Integrated 80-V N-Channel Buck Switch
  • Integrated High Voltage Bias Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency With Line
    and Load Variations
  • Adjustable Output Voltage
  • 2.5-V, ±2% Feedback Reference
  • Programmable Soft-Start
  • Thermal Shutdown
  • Exposed Thermal Pad for Improved Heat
    Dissipation

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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
LM5010A LM25010 LM25017 LM5007 LM5010 LM5010A-Q1 LM5017 LM5160-Q1 LM5160A LM5161
6    6    7.5    9    8    6    7.5    4.5    4.5    4.5   
75    42    48    75    75    75    100    65    65    100   
2.5    2.5    1.25    2.5    2.5    2.5    1.25    2    2    2   
70    37    40    73    70    70    90    60    60    92   
1    1    0.65    0.5    1    1    0.65    1.5    2    1   
1    1      1    1    1    1    1    1    1   
50    50    240    50    50    50    50    50    50    50   
1000    1000    1000    800    1000    1000    1000    1000    1000    1000   
0.65    0.645    1.75    0.5    0.65    0.65    1.75    2.3    2.3    2.3   
Enable    Enable    Synchronous Rectification    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   
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)   
99    99    90    99    99    99    90    92    92    92   
-40 to 150    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125
-40 to 150   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Catalog    Catalog    Catalog    Automotive    Catalog    Automotive    Catalog    Catalog   
HTSSOP
WSON   
HTSSOP
WSON   
SO PowerPAD
WSON   
VSSOP
WSON   
HTSSOP
WSON   
HTSSOP    SO PowerPAD
WSON   
HTSSOP    WSON    HTSSOP   

Other qualified versions of LM5010A

Version Part Number Definition
Automotive LM5010A-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
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WEBENCH® Designer LM5010A

  Min   Max Range
Vin  V 6.0 to 75.0V
Vout  V 2.5 to 75V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C


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