LM5575-Q1 75V, 1.5A Step-Down Switching Regulator | TI.com

LM5575-Q1 (ACTIVE)

75V, 1.5A Step-Down Switching Regulator

 

Description

The LM5575-Q1 is an easy-to-use buck regulator that 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 V to 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 ICs 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 16-pin HTSSOP 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

  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
  • -40°C to 150°C Operating Junction Temperature
  • Integrated 75-V, 330-mΩ N-Channel MOSFET
  • Ultra-Wide Input-Voltage 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
  • Create a Custom Design Using the LM5575-Q1 With the WEBENCH® Power Designer

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Parametrics Compare all products in Buck converters (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
Type
LM5575-Q1 LM5010A-Q1 LM5161-Q1 LM5164-Q1
6     6     4.5     6    
75     75     100     100    
1.23     2.5     2     1.2    
70     70     92     90    
1.5     1     1     1    
1     1     1     1    
50     50     50     75    
500     1000     1000     1000    
1     0.65     2.3     0.01    
Enable
Frequency Synchronization
Over Current Protection    
Enable
Over Current Protection    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
Current Mode     Constant on-time (COT)     COT with emulated ripple
Constant on-time (COT)    
Constant on-time (COT)    
95     99     92     99    
-40 to 125     -40 to 125
-40 to 150    
-40 to 125     -40 to 150    
Automotive     Automotive     Automotive     Automotive    
HTSSOP | 16     HTSSOP | 14     HTSSOP | 14     SO PowerPAD | 8    
Converter     Converter     Converter     Converter    

Design tool

WEBENCH® Designer LM5575-Q1

Product Option
  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