LM22673-Q1 Series

3A SIMPLE SWITCHER®, Step-Down Voltage Reg. with Adjustable Soft-Start and Current Limit

Catalog

3A SIMPLE SWITCHER®, Step-Down Voltage Reg. with Adjustable Soft-Start and Current Limit

Part	Voltage - Input (Max) [Max]	Output Type	Supplier Device Package	Topology	Function	Package / Case [y]	Package / Case [x]	Package / Case	Frequency - Switching	Current - Output	Voltage - Input (Min) [Min]	Output Configuration	Voltage - Output (Max)	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Voltage - Output (Min/Fixed)	Number of Outputs	Grade	Output Type	Qualification
Texas Instruments LM22673MRX-ADJ/NOPB	42 V	Adjustable	8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1
Texas Instruments LM22673QMRE-5.0/NOPB	42 V		8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1	Automotive	1.81 mOhm	AEC-Q100
Texas Instruments LM22673MR-ADJ/NOPB	42 V	Adjustable	8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1
Texas Instruments LM22673QTJ-5.0/NOPB	42 V		TO-263-7 Thin	Buck	Step-Down			TO-263-7 Thin	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1	Automotive	1.81 mOhm	AEC-Q100
Texas Instruments LM22673QTJ-ADJ/NOPB	42 V	Adjustable	TO-263-7 Thin	Buck	Step-Down			TO-263-7 Thin	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1	Automotive		AEC-Q100
Texas Instruments LM22673TJE-ADJ/NOPB	42 V	Adjustable	TO-263-7 Thin	Buck	Step-Down			TO-263-7 Thin	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1
Texas Instruments LM22673QMR-ADJ/NOPB	42 V	Adjustable	8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1	Automotive		AEC-Q100
Texas Instruments LM22673QMR-5.0/NOPB	42 V		8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1	Automotive	1.81 mOhm	AEC-Q100
Texas Instruments LM22673QMRX-5.0/NOPB	42 V		8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1	Automotive	1.81 mOhm	AEC-Q100
Texas Instruments LM22673TJE-5.0/NOPB	42 V		TO-263-7 Thin	Buck	Step-Down			TO-263-7 Thin	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1		1.81 mOhm

Catalog

3A SIMPLE SWITCHER®, Step-Down Voltage Reg. with Adjustable Soft-Start and Current Limit

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 PowerPADPackageOutput Voltage Options:-ADJ (Outputs as Low as 1.285 V)-5.0 (Output Fixed to 5 V)±1.5% Feedback Reference AccuracySwitching Frequency of 500 kHz–40°C to 125°C Operating JunctionTemperature RangeAdjustable Soft-StartAdjustable Current LimitIntegrated Boot-Strap DiodeFully Webench®EnabledLM22673-Q1 is an Automotive Grade Productthat is AEC-Q100 Grade 1 Qualified (–40°C to +125°CJunction Temperature)SO PowerPAD (Exposed Pad)PFM (Exposed Pad)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 PowerPADPackageOutput Voltage Options:-ADJ (Outputs as Low as 1.285 V)-5.0 (Output Fixed to 5 V)±1.5% Feedback Reference AccuracySwitching Frequency of 500 kHz–40°C to 125°C Operating JunctionTemperature RangeAdjustable Soft-StartAdjustable Current LimitIntegrated Boot-Strap DiodeFully Webench®EnabledLM22673-Q1 is an Automotive Grade Productthat is AEC-Q100 Grade 1 Qualified (–40°C to +125°CJunction Temperature)SO PowerPAD (Exposed Pad)PFM (Exposed Pad)

Description

The LM22673 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. A switching frequency of 500 kHz allows for small external components and good transient response. An adjustable soft-start feature is provided through the selection of a single external capacitor. In addition, the switch current limit can be programmed with a single external resistor, allowing solution optimization. The LM22673 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads. The LM22673 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 LM22673 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. A switching frequency of 500 kHz allows for small external components and good transient response. An adjustable soft-start feature is provided through the selection of a single external capacitor. In addition, the switch current limit can be programmed with a single external resistor, allowing solution optimization. The LM22673 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads. The LM22673 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.