The LM22674MRX-5.0/NOPB 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 thetedious task of calculating the loop compensationcomponents. Fixed 5 V output and adjustable output voltage options are available.A switching frequencyof 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 uA(typ). Built in soft-start(500 us, typ)
saves external components. The LM22674MRX-5.0/NOPB also has built in thermal shutdown, and current limiting to protect against accidental overloads.
The LM22674MRX-5.0/NOPB device is a member of TexasInstruments' SIMPLE SWITCHERO family. The SIMPLE SWITCHERO concept provides for an easy to use complete design using a minimum number of external components and the TI WEBENCHO 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.
Features
• Wide Input Voltage Range:4.5V to 42V
• Internally Compensated Voltage Mode Control
• Stable with Low ESR Ceramic Capacitors
• 200mQN-Channel MOSFET
• Output Voltage Options:
- ADJ(Outputs as Low as 1.285 V)
- 5.0(Output Fixed to 5V)
• ±1.5% Feedback Reference Accuracy
• Switching Frequency of 500kHz
• -40℃ to 125℃ Operating Junction Temperature Range
• Precision Enable Pin
• Integrated Boot-Strap Diode
• Integrated Soft-Start
• Fully WEBENCHO Enabled
• LM22674-Q1 is an Automotive Grade Productthat is AEC-Q100 Grade 1 Qualified(-40℃ to +125℃ Operating Junction Temperature)
• SO PowerPAD(Exposed Pad)
Applications
• Industrial Control
• Telecom and Datacom Systems
• Embedded Systems
• Conversions from Standard 24 V,12 V and5V Input Rails
Feature
- Wide Input Voltage Range: 4.5 V to 42 V
- Internally Compensated Voltage Mode Control
- Stable with Low ESR Ceramic Capacitors
- 200 mΩ N-Channel MOSFET
- Output Voltage Options: -ADJ (Outputs as Low as 1.285 V) -5.0 (Output Fixed to 5 V)
- ±1.5% Feedback Reference Accuracy
- Switching Frequency of 500 kHz
- –40°C to 125°C Operating Junction Temperature Range
- Precision Enable Pin
- Integrated Boot-Strap Diode
- Integrated Soft-Start
- Fully WEBENCH? Enabled
- LM22674-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C Operating Junction Temperature)
- SO PowerPAD (Exposed Pad)
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.
(Picture: Pinout)
