LM5009 9.5-95V Wide Vin, 150mA Constant On-Time Non-Synchronous Buck Regulator | TI.com

LM5009 (ACTIVE)

9.5-95V Wide Vin, 150mA Constant On-Time Non-Synchronous Buck Regulator

 

Recommended alternative parts

  • LM5019  -  7.5-100V wider Vin and sychronous

Description

The LM5009 step-down switching regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator. This device is capable of driving a 150-mA load current from a 9.5-V to 95-V input source. The switching frequency can exceed 600 kHz, depending on the input and output voltages. The output voltage can be set from 2.5 V to 85 V. This high-voltage regulator contains an N-channel buck switch and an internal startup regulator. The device is easy to implement and is provided in 8-pin VSSOP and thermally-enhanced, 8-pin WSON packages. The LM5009 is a well-suited alternative to a high-voltage monolithic or discrete linear solution where the power loss becomes unacceptable. The regulator operation is based on a control scheme using an on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant over load and input voltage variations. The control scheme requires no loop compensation, resulting in an ultrafast transient response. An intelligent current limit is implemented with forced off-time that is inversely proportional to VOUT. This scheme ensures short-circuit protection and provides minimum foldback. Other features include thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout, and maximum duty cycle limiter.

Features

  • Integrated N-Channel MOSFET
  • 150-mA Output Current Capability
  • Ultra-Fast Transient Response
  • No Loop Compensation Required
  • VIN Feed-Forward Provides Constant Operating Frequency
  • Switching Frequency Can Exceed 600 kHz
  • Highly Efficient Operation
  • 2% Accurate 2.5-V Feedback From
    –40°C to +125°C
  • Internal Startup Regulator
  • Intelligent Current Limit Protection
  • External Shutdown Control
  • Thermal Shutdown
  • 8-Pin VSSOP and Thermally-Enhanced 8-Pin WSON Packages

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LM5009

  Min   Max Range
Vin  V 9.5 to 95.0V
Vout  V 2.5 to 75V
Iout  A ≤ 0.15A
Ambient Temp  °C -40 to 125°C

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
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)
LM5009 Order now 9.5     95     2.5     85     0.15     1     50     600     0.485     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)    
LM5009A Order now 6     95     2.5     85     0.15     1     50     600     0.485     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)    
LM5165-Q1 Order now 3     65     1.23     65     0.15     1     50     600     0.01     Adjustable Current Limit
Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
Constant on-time (COT)     100     -40 to 150     Automotive     VSON | 10
VSSOP | 10    
Converter     10VSON: 9 mm2: 3 x 3 (VSON | 10)
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)    
TPS54061 Order now 4.7     60     0.8     58     0.2     1     50     1100     0.09     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Synchronous Rectification
UVLO Adjustable    
Current Mode     98     -40 to 150     Catalog     SON | 8     Converter     See datasheet (SON)    
TPS54061-Q1 Order now 4.7     60     0.8     58     0.2     1     50     1100     0.09     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Synchronous Rectification
UVLO Adjustable    
Current Mode     98     -40 to 150     Automotive