LM5010 8-75V Wide Vin, 1A Constant On-Time Non-Synchronous Buck Regulator | TI.com

LM5010 (ACTIVE)

8-75V Wide Vin, 1A Constant On-Time Non-Synchronous Buck Regulator

8-75V Wide Vin, 1A Constant On-Time Non-Synchronous Buck Regulator - LM5010
Datasheet
LM5010 High-Voltage 1-A Step-Down Switching Regulator datasheet (Rev. G)
 

Description

The LM5010 step-down switching regulator features all the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying in excess of 1-A load current. This high-voltage regulator contains an N-Channel Buck Switch, and is available in thermally enhanced 10-pin WSON and 14-pin HTSSOP packages. The hysteretic regulation scheme requires no loop compensation, resulting in fast load transient response, and simplifies 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

  • Input Voltage Range: 8 V to 75 V
  • Valley Current Limit At 1.25 A
  • Switching Frequency Can Exceed 1 MHz
  • Integrated N-Channel Buck Switch
  • Integrated Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant With
    Load and Line Variations
  • Maximum Duty Cycle Limited During Start-Up
  • Adjustable Output Voltage
  • Precision 2.5-V Feedback Reference
  • Thermal Shutdown
  • Exposed Thermal Pad for Improved Heat
    Dissipation
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WEBENCH® Designer LM5010

  Min   Max Range
Vin –  V 8.0 to 75.0V
Vout  V 2.5 to 75V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C

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Parametrics

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Part number Order 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 Package size: mm2:W x L (PKG)
LM5010 Order now 8     75     2.5     70     1     1     50     1000     0.65     Enable
Over Current Protection    		 Constant on-time (COT)     99     -40 to 125     Catalog     HTSSOP | 14
WSON | 10    		 Converter     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)
See datasheet (WSON)    
LM25010 Order now 6     42     2.5     37     1     1     50     1000     0.645     Enable
Over Current Protection    		 Constant on-time (COT)     99     -40 to 125     Catalog     HTSSOP | 14
WSON | 10    		 Converter     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)
See datasheet (WSON)    
LM25017 Order now 7.5     48     1.25     40     0.65     1     240     1000     1.75     Over Current Protection
Synchronous Rectification    		 Constant on-time (COT)     90     -40 to 125     Catalog     SO PowerPAD | 8
WSON | 8    		 Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
See datasheet (WSON)    
LM5007 Order now 9     75     2.5     73     0.5     1     50     800     0.5     Enable
Over Current Protection    		 Constant on-time (COT)     99     -40 to 125     Catalog     VSSOP | 8
WSON | 8    		 Converter     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)
See datasheet (WSON)    
LM5010A Order now 6     75     2.5     70     1     1     50     1000     0.65     Enable
Over Current Protection    		 Constant on-time (COT)     99