LM22670 Series

3A SIMPLE SWITCHER, Step-Down Voltage Regulator with Synchronization or Adjustable Switching Freq

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Catalog

3A SIMPLE SWITCHER, Step-Down Voltage Regulator with Synchronization or Adjustable Switching Freq

Part	Topology	Current - Output	Number of Outputs	Voltage - Input (Max) [Max]	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Output Configuration	Voltage - Output (Min/Fixed) [Min]	Supplier Device Package	Frequency - Switching	Grade	Function	Output Type	Qualification	Voltage - Output (Max) [Max]	Voltage - Input (Min) [Min]	Voltage - Input [Min]	Voltage - Input [Max]	Voltage - Output	Utilized IC / Part	Board Type	Outputs and Type	Outputs and Type	Main Purpose	Supplied Contents	Output Type	Voltage - Output (Min/Fixed)	Package / Case [custom]	Package / Case [custom]
Texas Instruments LM22670QTJ-ADJ/NOPB	Buck	3 A	1	42 V	TO-263-7 Thin	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	TO-263-7 Thin	500 kHz	Automotive	Step-Down	Adjustable	AEC-Q100	37 V	4.5 V
Texas Instruments LM22670INVEVAL/NOPB		1.5 A										500 kHz							5 V	35 V	5 V	LM22670	Fully Populated	Non-Isolated	1	DC/DC, Step Down	Board(s)
Texas Instruments LM22670MRX-5.0/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive		8-SO PowerPad	500 kHz		Step-Down				4.5 V										27.03 °C/W	5 V	3.9 mm	0.154 in
Texas Instruments LM22670QMRX-ADJ/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	8-SO PowerPad	500 kHz	Automotive	Step-Down	Adjustable	AEC-Q100	37 V	4.5 V												3.9 mm	0.154 in
Texas Instruments LM22670TJE-5.0/NOPB	Buck	3 A	1	42 V	TO-263-7 Thin	125 ¯C	-40 °C	Surface Mount	Positive		TO-263-7 Thin	500 kHz		Step-Down				4.5 V										27.03 °C/W	5 V
Texas Instruments LM22670QMRE-5.0/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive		8-SO PowerPad	500 kHz	Automotive	Step-Down		AEC-Q100		4.5 V										27.03 °C/W	5 V	3.9 mm	0.154 in
Texas Instruments LM22670QMR-5.0/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive		8-SO PowerPad	500 kHz	Automotive	Step-Down		AEC-Q100		4.5 V										27.03 °C/W	5 V	3.9 mm	0.154 in
Texas Instruments LM22670QTJE-ADJ/NOPB	Buck	3 A	1	42 V	TO-263-7 Thin	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	TO-263-7 Thin	500 kHz	Automotive	Step-Down	Adjustable	AEC-Q100	37 V	4.5 V
Texas Instruments LM22670MRX-ADJ/J7002408	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	8-SO PowerPad	500 kHz	Automotive	Step-Down	Adjustable	AEC-Q100	37 V	4.5 V												3.9 mm	0.154 in
Texas Instruments LM22670TJ-5.0/NOPB	Buck	3 A	1	42 V	TO-263-7 Thin	125 ¯C	-40 °C	Surface Mount	Positive		TO-263-7 Thin	500 kHz		Step-Down				4.5 V										27.03 °C/W	5 V
Texas Instruments LM22670MRE-5.0/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive		8-SO PowerPad	500 kHz		Step-Down				4.5 V										27.03 °C/W	5 V	3.9 mm	0.154 in
Texas Instruments LM22670TJ-ADJ/NOPB	Buck	3 A	1	42 V	TO-263-7 Thin	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	TO-263-7 Thin	500 kHz		Step-Down	Adjustable		37 V	4.5 V
Texas Instruments LM22670MRX-ADJ/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	8-SO PowerPad	500 kHz		Step-Down	Adjustable		37 V	4.5 V												3.9 mm	0.154 in
Texas Instruments LM22670MR-ADJ/J7002406	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	8-SO PowerPad	500 kHz	Automotive	Step-Down	Adjustable	AEC-Q100	37 V	4.5 V												3.9 mm	0.154 in
Texas Instruments LM22670QTJ-5.0/NOPB	Buck	3 A	1	42 V	TO-263-7 Thin	125 ¯C	-40 °C	Surface Mount	Positive		TO-263-7 Thin	500 kHz	Automotive	Step-Down		AEC-Q100		4.5 V										27.03 °C/W	5 V
Texas Instruments LM22670TJE-ADJ/NOPB	Buck	3 A	1	42 V	TO-263-7 Thin	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	TO-263-7 Thin	500 kHz		Step-Down	Adjustable		37 V	4.5 V
Texas Instruments LM22670MRE-ADJ/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	8-SO PowerPad	500 kHz		Step-Down	Adjustable		37 V	4.5 V												3.9 mm	0.154 in
Texas Instruments LM22670QTJE-5.0/NOPB	Buck	3 A	1	42 V	TO-263-7 Thin	125 ¯C	-40 °C	Surface Mount	Positive		TO-263-7 Thin	500 kHz	Automotive	Step-Down		AEC-Q100		4.5 V										27.03 °C/W	5 V
Texas Instruments LM22670QMRX-5.0/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive		8-SO PowerPad	500 kHz	Automotive	Step-Down		AEC-Q100		4.5 V										27.03 °C/W	5 V	3.9 mm	0.154 in
Texas Instruments LM22670MR-5.0/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive		8-SO PowerPad	500 kHz		Step-Down				4.5 V										27.03 °C/W	5 V	3.9 mm	0.154 in
Texas Instruments LM22670QMRE-ADJ/NOPB	Buck	3 A	1	42 V	8-PowerSOIC	125 ¯C	-40 °C	Surface Mount	Positive	1.285 V	8-SO PowerPad	500 kHz	Automotive	Step-Down	Adjustable	AEC-Q100	37 V	4.5 V												3.9 mm	0.154 in

Key Features

• Wide Input Voltage Range: 4.5 V to 42 VInternally Compensated Voltage Mode ControlStable with Low ESR Ceramic Capacitors120 mΩ N-channel MOSFET PFM Package100 mΩ N-channel MOSFET SO PowerPAD-8 PackageOutput Voltage Options:-ADJ (Outputs as Low as 1.285 V)-5.0 (Output Fixed to 5 V)±1.5% Feedback Reference Accuracy500 kHz Default Switching FrequencyAdjustable Switching Frequency and Synchronization–40°C to 125°C Operating JunctionTemperature RangePrecision Enable PinIntegrated Boot-Strap DiodeIntegrated Soft-StartFully WEBENCH®enabledLM22670-Q1 is an Automotive Grade Productthat is AEC-Q100 Grade 1 Qualified (–40°C to +125°COperating Junction Temperature)Wide Input Voltage Range: 4.5 V to 42 VInternally Compensated Voltage Mode ControlStable with Low ESR Ceramic Capacitors120 mΩ N-channel MOSFET PFM Package100 mΩ N-channel MOSFET SO PowerPAD-8 PackageOutput Voltage Options:-ADJ (Outputs as Low as 1.285 V)-5.0 (Output Fixed to 5 V)±1.5% Feedback Reference Accuracy500 kHz Default Switching FrequencyAdjustable Switching Frequency and Synchronization–40°C to 125°C Operating JunctionTemperature RangePrecision Enable PinIntegrated Boot-Strap DiodeIntegrated Soft-StartFully WEBENCH®enabledLM22670-Q1 is an Automotive Grade Productthat is AEC-Q100 Grade 1 Qualified (–40°C to +125°COperating Junction Temperature)

Description

The LM22670 switching regulator provides all of the functions necessary to implement an efficient high voltage step-down (buck) regulator using a minimum of external components. This easy to use regulator incorporates a 42 V N-channel MOSFET switch capable of providing up to 3 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5 V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typ). Built in soft-start (500 µs, typ) saves external components. The LM22670 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads. The LM22670 device is a member of Texas Instruments’ SIMPLE SWITCHER®family. The SIMPLE SWITCHER®concept provides for an easy to use complete design using a minimum number of external components and the TI WEBENCH®design tool. TI's WEBENCH®tool includes features such as external component calculation, electrical simulation, thermal simulation, and build-It boards for easy design-in. The LM22670 switching regulator provides all of the functions necessary to implement an efficient high voltage step-down (buck) regulator using a minimum of external components. This easy to use regulator incorporates a 42 V N-channel MOSFET switch capable of providing up to 3 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5 V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typ). Built in soft-start (500 µs, typ) saves external components. The LM22670 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads. The LM22670 device is a member of Texas Instruments’ SIMPLE SWITCHER®family. The SIMPLE SWITCHER®concept provides for an easy to use complete design using a minimum number of external components and the TI WEBENCH®design tool. TI's WEBENCH®tool includes features such as external component calculation, electrical simulation, thermal simulation, and build-It boards for easy design-in.