LM25576-Q1 Series

42V, 3A Step-Down Switching Regulator

Catalog

42V, 3A Step-Down Switching Regulator

Part	Output Type	Package / Case	Package / Case [custom]	Package / Case	Qualification	Voltage - Output (Min/Fixed)	Supplier Device Package	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Topology	Frequency - Switching [Min]	Frequency - Switching [Max]	Voltage - Output (Max) [Max]	Output Configuration	Grade	Operating Temperature [Min]	Operating Temperature [Max]	Number of Outputs	Current - Output	Function	Mounting Type	Outputs and Type	Outputs and Type	Voltage - Input [Max]	Voltage - Input [Min]	Utilized IC / Part	Supplied Contents	Board Type	Main Purpose	Voltage - Output [Max]	Voltage - Output [Min]	Regulator Topology
Texas Instruments LM25576Q0MHX/NOPB	Adjustable	20-PowerTSSOP	4.4 mm	0.173 in	AEC-Q100	1.225 V	20-HTSSOP	6 V	42 V	Buck	50 kHz	1 MHz	40 V	Positive	Automotive	-40 °C	125 ¯C	1	3 A	Step-Down	Surface Mount
Texas Instruments LM25576MHX/NOPB	Adjustable	20-PowerTSSOP	4.4 mm	0.173 in		1.225 V	20-HTSSOP	6 V	42 V	Buck	50 kHz	1 MHz	40 V	Positive		-40 °C	125 ¯C	1	3 A	Step-Down	Surface Mount
Texas Instruments LM25576MHX	Adjustable	20-PowerTSSOP	4.4 mm	0.173 in		1.225 V	20-HTSSOP	6 V	42 V	Buck	50 kHz	1 MHz	40 V	Positive		-40 °C	125 ¯C	1	3 A	Step-Down	Surface Mount
Texas Instruments LM25576BLDT/NOPB																			3 A			Non-Isolated	1	42 V	6 V	LM25576	Board(s)	Partially Populated - Main IC Only	DC/DC Step Down	40 V	1.23 V	Buck
Texas Instruments LM25576QMHX/NOPB	Adjustable	20-PowerTSSOP	4.4 mm	0.173 in	AEC-Q100	1.225 V	20-HTSSOP	6 V	42 V	Buck	50 kHz	1 MHz	40 V	Positive	Automotive	-40 °C	125 ¯C	1	3 A	Step-Down	Surface Mount

Catalog

42V, 3A Step-Down Switching Regulator

Key Features

• Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureIntegrated 42-V, 170-mΩ N-channel MOSFETUltra-Wide Input Voltage Range from 6 V to 42 VAdjustable Output Voltage as Low as 1.225 V1.5% Feedback Reference AccuracyOperating Frequency Adjustable Between 50 kHz and 1 MHz with Single ResistorMaster or Slave Frequency SynchronizationAdjustable Soft-StartEmulated Current Mode Control ArchitectureWide Bandwidth Error AmplifierBuilt-in ProtectionHTSSOP-20 EP (Exposed Pad)Create a Custom Design Using the LM25576-Q1 With theWEBENCH®Power DesignerQualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureIntegrated 42-V, 170-mΩ N-channel MOSFETUltra-Wide Input Voltage Range from 6 V to 42 VAdjustable Output Voltage as Low as 1.225 V1.5% Feedback Reference AccuracyOperating Frequency Adjustable Between 50 kHz and 1 MHz with Single ResistorMaster or Slave Frequency SynchronizationAdjustable Soft-StartEmulated Current Mode Control ArchitectureWide Bandwidth Error AmplifierBuilt-in ProtectionHTSSOP-20 EP (Exposed Pad)Create a Custom Design Using the LM25576-Q1 With theWEBENCH®Power Designer

Description

The LM25576-Q1 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 LM25576-Q1 delivers 3 A of continuous output current with an integrated 170-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 LM25576-Q1 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-20 package featuring an exposed die attach pad for thermal dissipation. The LM25576-Q1 is supported by the full suite of WEBENCH®On-Line design tools. The LM25576-Q1 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 LM25576-Q1 delivers 3 A of continuous output current with an integrated 170-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 LM25576-Q1 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-20 package featuring an exposed die attach pad for thermal dissipation. The LM25576-Q1 is supported by the full suite of WEBENCH®On-Line design tools.