Gehäuseinformationen
| Gehäuse | Pins TO-263 (NDR) | 7 |
| Betriebstemperaturbereich (°C) -40 to 125 |
| Gehäusemenge | Träger 250 | SMALL T&R |
Merkmale von LM22679
- New product available: LM61460 3-V to 36-V, 6-A low EMI synchronous converter
- Wide input voltage range: 4.5 V to 42 V
- Internally compensated voltage mode control
- Stable with low-ESR ceramic capacitors
- 100-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
- Adjustable soft start
- Adjustable current limit
- Integrated bootstrap diode
- Fully WEBENCH enabled
- LM22679-Q1 is AEC-Q100 qualified and manufactured on an automotive-grade flow
- PFM (exposed pad) package
Beschreibung von LM22679
The LM22679 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 that can provide up to 5 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 LM22679 device also has built-in thermal shutdown and current limiting to protect against accidental overloads.
The new product, LM61460, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See the device comparison table to compare. Start WEBENCH design with LM61460
The LM22679 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.