LM5007 9-75V Wide Vin, 500mA Constant On-Time Non-Synchronous Buck Regulator | TI.com

LM5007 (ACTIVE) 9-75V Wide Vin, 500mA Constant On-Time Non-Synchronous Buck Regulator

 

Recommended alternative parts

  • LM5017  -  7.5-100V wider Vin and sychronous

Description

The LM5007 0.5-A step-down switching converter features all of the functions needed to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 80-V, 0.7-A N-channel buck switch and operates over an input voltage range of 9 V to 75 V. The device is easy to implement and is provided in 8-pin VSSOP and thermally enhanced 8-pin WSON packages.

The converter uses a hysteretic control scheme with a PWM on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant with load and input voltage variations. The hysteretic control requires no loop compensation and provides fast transient response. An intelligent current limit is implemented with forced off-time that is inversely proportional to VOUT. This current limiting scheme ensures short-circuit protection while providing reduced load current foldback. Other protection features include thermal shutdown with automatic recovery, VCC and gate drive undervoltage lockout, and maximum duty cycle limiter.

Features

  • Versatile Synchronous Buck DC/DC Converter
    • Operating Input Voltage Range of 9 V to 75 V
    • Integrated 80-V, 0.7-A N-Channel Buck Switch
    • Internal High-Voltage VCC Regulator
    • Adjustable Output Voltage
    • High Efficiency Operation
  • Adaptive Constant On-Time Control Architecture
    • Ultra-Fast Transient Response
    • No Control Loop Compensation Required
  • Nearly Constant Switching Frequency
    • PWM On-Time Varies Inversely with Input Voltage
  • Precision 2.5-V Reference
  • Low Input Quiescent Current
  • Inherent Protection Features for Robust Design
    • Intelligent Current Limit Protection
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
    • External Shutdown Control
  • 8-Pin VSSOP and WSON Packages
  • Create a Custom Regulator Design Using WEBENCH® Power Designer

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WEBENCH® Designer LM5007

  Min   Max Range
Vin  V 9.0 to 75.0V
Vout  V 2.5 to 75V
Iout  A ≤ 0.5A
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)
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)    
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)    
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