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LM22677-Q1
- 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
- 500-kHz Default Switching Frequency
- Adjustable Switching Frequency and
Synchronization - 40°C to +125°C Operating Junction Temperature
Range - Precision Enable Input
- Integrated Boot-Strap Diode
- Integrated Soft-Start
- Fully WEBENCH® Enabled
- LM22677-Q1 is an Automotive-Grade Product
that is AEC-Q100 Grade 1 Qualified (40°C to
+125°C Operating Junction Temperature) - NDR (Exposed Pad)
The LM22677 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. The default switching frequency is set at 500 kHz, thus allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typical). The LM22677 also has built-in thermal shutdown, and current limiting to protect against accidental overloads.
The LM22677 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.
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LM22677EVAL — LM22677 5A SIMPLE SWITCHER レギュレータ評価モジュール、周波数調整または周波数同期 / 高精度イネーブル付
The LM22677 evaluation board is designed to demonstrate the capabilities of the LM22677 switching regulator. The LM22677 evaluation board schematic shown in Figure 1 is configured to provide an output voltage of 3.3V up to 5A load current with an input voltage range of 4.5V to 42V. Due to the low (...)
LM2267X-22680DESIGN-CALC — LM2267x、LM22680 クイック スタート Simple Switcher コンポーネント カリキュレータ
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| TO-263 (NDR) | 7 | Ultra Librarian |