LM5009MM Part Information

Details for LM5009MM by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part 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.

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Part Features

  • 150-mA Output Current Capability
  • 2% Accurate 2.5-V Feedback From u201340u00b0C to +125u00b0C
  • 8-Pin VSSOP and Thermally-Enhanced 8-Pin
  • External Shutdown Control
  • Highly Efficient Operation
  • Integrated N-Channel MOSFET
  • Intelligent Current Limit Protection
  • Internal Startup Regulator
  • No Loop Compensation Required
  • Switching Frequency Can Exceed 600 kHz
  • Thermal Shutdown
  • Ultra-Fast Transient Response
  • VIN Feed-Forward Provides Constant Operating Frequency

Part Specifications

Topology Buck (Step Down)
Input Voltage Min 9.5V
Input Voltage Max 95V
No. of Outputs 1Outputs
DC / DC Converter IC Case VSSOP
No. of Pins 8Pins
Output Current 150mA
Output Voltage Min 2.5V
Output Voltage Max 85V
Switching Frequency 600kHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
SVHC No SVHC (27-Jun-2018)
Adjustable Output Voltage Max 85V
Adjustable Output Voltage Min 2.5V
Base Number 5009
Frequency 600kHz
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +85°C
Primary Input Voltage 95V
Supply Voltage Min 9.5V
Termination Type Surface Mount Device
Voltage Regulator Type Switching Regulator
RoHS Compliant

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