LM22674MRX-ADJ/NOPB
ActiveCONV DC-DC 4.5V TO 42V STEP DOWN SINGLE-OUT 1.285V TO 37V 0.5A 8-PIN HSOIC EP T/R
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LM22674MRX-ADJ/NOPB
ActiveCONV DC-DC 4.5V TO 42V STEP DOWN SINGLE-OUT 1.285V TO 37V 0.5A 8-PIN HSOIC EP T/R
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM22674MRX-ADJ/NOPB |
|---|---|
| Current - Output | 500 mA |
| Frequency - Switching | 500 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 8-PowerSOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 8-SO PowerPad |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 42 V |
| Voltage - Input (Min) [Min] | 4.5 V |
| Voltage - Output (Max) | 37 V |
| Voltage - Output (Min/Fixed) | 1.285 V |
LM22674-Q1 Series
500 mA SIMPLE SWITCHER®, Step-Down Voltage Regulator with Precision Enable
| Part | Voltage - Input (Min) [Min] | Voltage - Input (Max) [Max] | Frequency - Switching | Topology | Voltage - Output (Min/Fixed) | Supplier Device Package | Operating Temperature [Min] | Operating Temperature [Max] | Synchronous Rectifier | Mounting Type | Package / Case [y] | Package / Case [x] | Package / Case | Output Type | Output Configuration | Current - Output | Number of Outputs | Function | Grade | Qualification | Voltage - Output (Max) | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 5 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | 1.81 mOhm | Positive | 500 mA | 1 | Step-Down | |||||
 Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 5 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | 1.81 mOhm | Positive | 500 mA | 1 | Step-Down | Automotive | AEC-Q100 | |||
 Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 1.285 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | Positive | 500 mA | 1 | Step-Down | 37 V | Adjustable | ||||
Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 5 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | 1.81 mOhm | Positive | 500 mA | 1 | Step-Down | Automotive | AEC-Q100 | |||
Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 5 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | 1.81 mOhm | Positive | 500 mA | 1 | Step-Down | |||||
Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 1.285 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | Positive | 500 mA | 1 | Step-Down | 37 V | Adjustable | ||||
 Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 5 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | 1.81 mOhm | Positive | 500 mA | 1 | Step-Down | Automotive | AEC-Q100 | |||
Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 1.285 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | Positive | 500 mA | 1 | Step-Down | Automotive | AEC-Q100 | 37 V | Adjustable | ||
Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 1.285 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | Positive | 500 mA | 1 | Step-Down | 37 V | Adjustable | ||||
Texas Instruments | 4.5 V | 42 V | 500 kHz | Buck | 1.285 V | 8-SO PowerPad | -40 °C | 125 ¯C | Surface Mount | 3.9 mm | 0.154 in | 8-PowerSOIC | Positive | 500 mA | 1 | Step-Down | Automotive | AEC-Q100 | 37 V | Adjustable |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.24 | |
| 10 | $ 2.91 | |||
| 25 | $ 2.75 | |||
| 100 | $ 2.38 | |||
| 250 | $ 2.26 | |||
| 500 | $ 2.03 | |||
| 1000 | $ 1.71 | |||
| Digi-Reel® | 1 | $ 3.24 | ||
| 10 | $ 2.91 | |||
| 25 | $ 2.75 | |||
| 100 | $ 2.38 | |||
| 250 | $ 2.26 | |||
| 500 | $ 2.03 | |||
| 1000 | $ 1.71 | |||
| Tape & Reel (TR) | 2500 | $ 1.63 | ||
| 5000 | $ 1.56 | |||
| Texas Instruments | LARGE T&R | 1 | $ 2.44 | |
| 100 | $ 2.14 | |||
| 250 | $ 1.50 | |||
| 1000 | $ 1.21 | |||
Description
General part information
LM22674-Q1 Series
The LM22674 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 500 mA 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 LM22674 also has built in thermal shutdown, and current limiting to protect against accidental overloads.
The LM22674 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 LM22674 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 500 mA 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 LM22674 also has built in thermal shutdown, and current limiting to protect against accidental overloads.
Documents
Technical documentation and resources