75V, 1.5A Step-Down Switching Regulator - LM5575-Q1

LM5575-Q1 (ACTIVE)

75V, 1.5A Step-Down Switching Regulator

 

Description

The LM5575-Q1 is an easy-to-use SIMPLE SWITCHER® buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 75 V, the LM5575-Q1 delivers 1.5 A of continuous output current with an integrated 330-mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease-of-loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50 kHz to 500 kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x devices to self-synchronize or to synchronize to an external clock. The LM5575-Q1 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shutdown, and remote shutdown. The device is available in a power enhanced TSSOP-16 package featuring an exposed die attach pad for thermal dissipation. The LM5575-Q1 is supported by the full suite of WEBENCH® On-Line design tools.

Features

  • LM5575-Q1 is an Automotive Grade Product That
    is AEC-Q100 Grade 0 Qualified
  • –40°C to 150°C Operating Junction Temperature
  • Integrated 75-V, 330-mΩ N-Channel MOSFET
  • Ultra-Wide Input Voltage Range From 6 V to 75 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.65% Feedback Reference Accuracy
  • Operating Frequency Adjustable Between 50 kHz
    and 500 kHz With Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-In Protection

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Parametrics Compare all products in Buck Converter (Integrated Switch)

 
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
LM5575-Q1
6   
75   
1.23   
70   
1.5   
1   
50   
500   
1   
Enable   
Current Mode   
95   
-40 to 125   
Automotive   
HTSSOP   

Other qualified versions of LM5575-Q1

Version Part Number Definition
Catalog LM5575 TI's standard catalog product

WEBENCH® Designer LM5575-Q1

  Min   Max Range
Vin  V 6.0 to 75.0V
Vout  V 1.225 to 75V
Iout  A 1.50A
Ambient Temp  °C -40 to 125°C
Product Option