LM25574-Q1 Series

42V, 0.5A Step-Down Switching Regulator

Catalog

42V, 0.5A Step-Down Switching Regulator

Part	Output Type	Topology	Voltage - Input (Min) [Min]	Output Configuration	Mounting Type	Current - Output	Qualification	Voltage - Input (Max) [Max]	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Min]	Frequency - Switching [Max]	Package / Case [x]	Package / Case	Package / Case [y]	Function	Voltage - Output (Max) [Max]	Grade	Number of Outputs	Voltage - Output (Min/Fixed)
Texas Instruments LM25574Q0MT/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA	AEC-Q100	42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V	Automotive	1	1.225 V
Texas Instruments LM25574MTX/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA		42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V		1	1.225 V
Texas Instruments LM25574MTX	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA		42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V		1	1.225 V
Texas Instruments LM25574QMTX/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA	AEC-Q100	42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V	Automotive	1	1.225 V
Texas Instruments LM25574QMT/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA	AEC-Q100	42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V	Automotive	1	1.225 V
Texas Instruments LM25574Q0MTX/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA	AEC-Q100	42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V	Automotive	1	1.225 V
Texas Instruments LM25574MT/NOPB	Adjustable	Buck	6 V	Positive	Surface Mount	500 mA		42 V	16-TSSOP	-40 °C	125 ¯C	50 kHz	1 MHz	0.173 in	16-TSSOP	4.4 mm	Step-Down	40 V		1	1.225 V

Catalog

42V, 0.5A 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, 750-mΩ N-Channel MOSFETUltra-Wide Input Voltage 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 ProtectionTSSOP-16 PackageCreate a Custom Design Using the LM25574-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, 750-mΩ N-Channel MOSFETUltra-Wide Input Voltage 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 ProtectionTSSOP-16 PackageCreate a Custom Design Using the LM25574-Q1 With theWEBENCH®Power Designer

Description

The LM25574-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 LM25574-Q1 delivers 0.5-A of continuous output current with an integrated 750-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 LM25574-Q1 guarantees robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a TSSOP-16 package. The LM25574-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 LM25574-Q1 delivers 0.5-A of continuous output current with an integrated 750-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 LM25574-Q1 guarantees robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a TSSOP-16 package.