The LM22673MR-ADJ/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 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 LM22673MR-ADJ/NOPB device also has built-in thermal shutdown, and current limiting to protect against accidental overloads.
The LM22673MR-ADJ/NOPB 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.
Feature
- Wide Input Voltage Range: 4.5 V to 42 V
- Internally Compensated Voltage Mode Control
- Stable with Low ESR Ceramic Capacitors
- 120 mΩ N-Channel MOSFET PFM Package
- 100 mΩ N-Channel MOSFET SO PowerPAD Package
- 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
- Adjustable Soft-Start
- Adjustable Current Limit
- Integrated Boot-Strap Diode
- Fully Webench? Enabled
- LM22673-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C Junction Temperature)
- SO PowerPAD (Exposed Pad)
- PFM (Exposed Pad)
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.
