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. 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. For AEC-Q100 grade 1 and grade 0 orderable numbers, see the orderable addendum at the end of this data sheet.

Features

  • AEC-Q100-qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C operating temperature
    • Device temperature grade 0: –40°C to +150°C operating temperature
    • Device HBM ESD classification level 2
  • 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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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

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)
LM5575-Q1 Order now 6     75     1.23     70     1.5     1     50     500     1     Enable
Frequency Synchronization
Over Current Protection    
Current Mode     95     -40 to 125
-40 to 150    
Automotive     HTSSOP | 16     Converter     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)    
LM5010A-Q1 Order now 6     75     2.5     70     1     1     50     1000     0.65     Enable
Over Current Protection    
Constant on-time (COT)     99     -40 to 125
-40 to 150    
Automotive     HTSSOP | 14     Converter     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)    
LM5161-Q1 Order now 4.5     100     2     92     1     1     50     1000     2.3     Enable
Forced PWM
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
COT with emulated ripple
Constant on-time (COT)    
92     -40 to 125     Automotive     HTSSOP | 14     Converter     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)    
LM5164-Q1 Order now 6     100     1.2     90     1     1     75     1000     0.01     Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
Constant on-time (COT)     99     -40 to 150     Automotive     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)