LM25575 6V to 42V, 1.5A Step-Down DC/DC Switching Regulator | TI.com

LM25575 (ACTIVE) 6V to 42V, 1.5A Step-Down DC/DC Switching Regulator

 

Recommended alternative parts

  • LM43602  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Synchronous 36V, 2A Regulator - Higher efficiency, Low Quiescent Current, Smaller Solution Size

Description

The LM25575 is an easy to use 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 V to 42 V, the LM25575 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 1-MHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM25575 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a power enhanced HTSSOP-16 package featuring an exposed die attach pad for thermal dissipation. The LM25575 is supported by the full suite of WEBENCH® On-Line design tools.

Features

  • Integrated 42-V, 330-mΩ N-Channel MOSFET
  • Ultra-Wide Input Voltage Range From 6 V to 42 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.5% Feedback Reference Accuracy
  • Operating Frequency Adjustable Between 50 kHz and 1 MHz With Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-In Protection
  • HTSSOP-16EP (Exposed Pad)
  • Create a Custom Design Using the LM25575 With the WEBENCH® Power Designer

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WEBENCH® Designer LM25575

  Min   Max Range
Vin  V 6.0 to 42.0V
Vout  V -32 to 42V
Iout  A ≤ 1.5A
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)
LM25575 Order now 6     42     1.23     40     1.5     1     50     1000     1     Frequency Synchronization
Over Current Protection    
Current Mode     95     -40 to 125     Catalog     HTSSOP | 16     Converter     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)    
LM25574 Order now 6     42     1.23     40     0.5     1     50     1000     1     Frequency Synchronization
Over Current Protection    
Current Mode     95     -40 to 125     Catalog     TSSOP | 16     Converter     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)    
LM25576 Order now 6     42     1.23     40     3     1     50     1000     1     Frequency Synchronization
Over Current Protection    
Current Mode     95     -40 to 125     Catalog     HTSSOP | 20     Converter     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)    
LM43600 Order now 3.5     36     1     28     0.5     1     200     2200     0.033     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking    
Current Mode     99     -40 to 125     Catalog     HTSSOP | 16     Converter     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)    
LMR33620 Order now 3.8     36     1     34     2     1     400     2100     0.024     Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package    
Current Mode     98     -40 to 125     Catalog     SO PowerPAD | 8
VQFN-HR | 12    
Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)