LM25010 6-42V Wide Vin, 1A, Constant On-Time Non-Synchronous Buck Regulator | TI.com

LM25010 (ACTIVE) 6-42V Wide Vin, 1A, Constant On-Time Non-Synchronous Buck Regulator

 

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Description

The LM25010 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

  • LM25010-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 42-V Input Voltage Range
  • Valley Current Limiting at 1.25 A
  • Programmable Switching Frequency Up To 1 MHz
  • Integrated 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

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WEBENCH® Designer LM25010

  Min   Max Range
Vin  V 6.0 to 42.0V
Vout  V 2.5 to 42V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C

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)
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)
10WSON: 16 mm2: 4 x 4 (WSON | 10)    
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)
8WSON: 16 mm2: 4 x 4 (WSON | 8)    
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)
8WSON: 16 mm2: 4 x 4 (WSON | 8)    
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)
10WSON: 16 mm2: 4 x 4 (WSON | 10)    
LM5010A Order now 6     75     2.5     70     1     1     50     1000     0.65     Enable
Over Current Protection    
Constant on-time (COT)     99