LM22675MRX-5.0/NOPB
ActiveSWITCHING VOLTAGE REGULATORS 4.5V TO 42V 1A SIMP LE SWITCHER BUCK CO A 926-LM22675MRE50NOPB
LM22675MRX-5.0/NOPB
ActiveSWITCHING VOLTAGE REGULATORS 4.5V TO 42V 1A SIMP LE SWITCHER BUCK CO A 926-LM22675MRE50NOPB
Description
General part information
LM22675 Series
The LM22675 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 1 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 LM22675 also has built in thermal shutdown, and current limiting to protect against accidental overloads.
The LM22675 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 LM22675 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 1 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 LM22675 also has built in thermal shutdown, and current limiting to protect against accidental overloads.
Technical Specifications
Parameters and characteristics for this part
| Specification | LM22675MRX-5.0/NOPB |
|---|---|
| Current - Output | 1 A |
| 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 | Fixed |
| Package Length | 0.154 in |
| Package Name | 8-PowerSOIC, 8-SO PowerPad |
| Package Width | 3.9 mm |
| Synchronous Rectifier | No |
| Topology | Buck |
| Voltage - Input (Max) | 42 V |
| Voltage - Input (Min) | 4.5 V |
| Voltage - Output (Min/Fixed) | 5 V |
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