LM22676-Q1 Series

3A SIMPLE SWITCHER, Step-Down Voltage Regulator with Precision Enable

Catalog

3A SIMPLE SWITCHER, Step-Down Voltage Regulator with Precision Enable

Part	Current - Output	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Number of Outputs	Voltage - Input (Max) [Max]	Qualification	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Package / Case	Output Configuration	Frequency - Switching	Topology	Output Type	Grade	Function	Mounting Type	Voltage - Output (Max)	Output Type	Package / Case [y]	Package / Case [x]
Texas Instruments LM22676QTJE-ADJ/NOPB	3 A	TO-263-7 Thin	-40 °C	125 ¯C	1	42 V	AEC-Q100	4.5 V	1.285 V	TO-263-7 Thin	Positive	500 kHz	Buck	Adjustable	Automotive	Step-Down	Surface Mount	37 V
Texas Instruments LM22676QTJ-5.0/NOPB	3 A	TO-263-7 Thin	-40 °C	125 ¯C	1	42 V	AEC-Q100	4.5 V	5 V	TO-263-7 Thin	Positive	500 kHz	Buck		Automotive	Step-Down	Surface Mount		1.81 mOhm
Texas Instruments LM22676TJ-ADJ/NOPB	3 A	TO-263-7 Thin	-40 °C	125 ¯C	1	42 V		4.5 V	1.285 V	TO-263-7 Thin	Positive	500 kHz	Buck	Adjustable		Step-Down	Surface Mount	37 V
Texas Instruments LM22676QMRX-ADJ/NOPB	3 A	8-SO PowerPad	-40 °C	125 ¯C	1	42 V	AEC-Q100	4.5 V	1.285 V	8-PowerSOIC	Positive	500 kHz	Buck	Adjustable	Automotive	Step-Down	Surface Mount	37 V		3.9 mm	0.154 in
Texas Instruments LM22676TJE-5.0/NOPB	3 A	TO-263-7 Thin	-40 °C	125 ¯C	1	42 V		4.5 V	5 V	TO-263-7 Thin	Positive	500 kHz	Buck			Step-Down	Surface Mount		1.81 mOhm
Texas Instruments LM22676QMRE-ADJ/NOPB	3 A	8-SO PowerPad	-40 °C	125 ¯C	1	42 V	AEC-Q100	4.5 V	1.285 V	8-PowerSOIC	Positive	500 kHz	Buck	Adjustable	Automotive	Step-Down	Surface Mount	37 V		3.9 mm	0.154 in
Texas Instruments LM22676MRE-5.0/NOPB	3 A	8-SO PowerPad	-40 °C	125 ¯C	1	42 V		4.5 V	5 V	8-PowerSOIC	Positive	500 kHz	Buck			Step-Down	Surface Mount		1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM22676QMRX-5.0/NOPB	3 A	8-SO PowerPad	-40 °C	125 ¯C	1	42 V	AEC-Q100	4.5 V	5 V	8-PowerSOIC	Positive	500 kHz	Buck		Automotive	Step-Down	Surface Mount		1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM22676MRX-ADJ/NOPB	3 A	8-SO PowerPad	-40 °C	125 ¯C	1	42 V		4.5 V	1.285 V	8-PowerSOIC	Positive	500 kHz	Buck	Adjustable		Step-Down	Surface Mount	37 V		3.9 mm	0.154 in
Texas Instruments LM22676QMRE-5.0/NOPB	3 A	8-SO PowerPad	-40 °C	125 ¯C	1	42 V	AEC-Q100	4.5 V	5 V	8-PowerSOIC	Positive	500 kHz	Buck		Automotive	Step-Down	Surface Mount		1.81 mOhm	3.9 mm	0.154 in

Catalog

3A SIMPLE SWITCHER, Step-Down Voltage Regulator with Precision Enable

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 PSOP-8 PackageOutput 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 OperatingJunction Temperature RangePrecision Enable PinIntegrated Boot-Strap DiodeIntegrated Soft-StartFully WEBENCH®EnabledLM22676Q is an Automotive Grade Productthat is AEC-Q100 Grade 1 Qualified(–40°C to +125°C Operating JunctionTemperature)SO PowerPAD (Exposed PadPFM (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 PSOP-8 PackageOutput 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 OperatingJunction Temperature RangePrecision Enable PinIntegrated Boot-Strap DiodeIntegrated Soft-StartFully WEBENCH®EnabledLM22676Q is an Automotive Grade Productthat is AEC-Q100 Grade 1 Qualified(–40°C to +125°C Operating JunctionTemperature)SO PowerPAD (Exposed PadPFM (Exposed Pad)

Description

The LM22676 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. 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 LM22676 also has built in thermal shutdown, and current limiting to protect against accidental overloads. The LM22676 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 LM22676 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. 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 LM22676 also has built in thermal shutdown, and current limiting to protect against accidental overloads. The LM22676 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.