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LM22670-Q1
- 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-8 Package
- 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 Pin
- Integrated Boot-Strap Diode
- Integrated Soft-Start
- Fully WEBENCH® enabled
- LM22670-Q1 is an Automotive Grade Product
that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C
Operating Junction Temperature)
The LM22670 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. The default switching frequency is set at 500 kHz 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 (typ). Built in soft-start (500 µs, typ) saves external components. The LM22670 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads.
The LM22670 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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技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | LM22670/-Q1 42-V, 3-A SIMPLE SWITCHER®, Step-Down Voltage Regulator With Features データシート (Rev. P) | PDF | HTML | 2014/10/28 | ||
| アプリケーション・ノート | AN-1930 車載アプリケーションを席巻する SIMPLE SWITCHER® レギュレータ (Rev. B 翻訳版) | PDF | HTML | 英語版 (Rev.B) | PDF | HTML | 2024/11/06 | |
| アプリケーション・ノート | Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) | 2014/09/12 | ||||
| アプリケーション・ノート | AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B) | 2013/05/06 | ||||
| アプリケーション・ノート | AN-1797 TO-263 THIN Package (Rev. A) | 2013/04/24 | ||||
| アプリケーション・ノート | AN-1197 Selecting Inductors for Buck Converters (Rev. B) | 2013/04/23 | ||||
| アプリケーション・ノート | AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) | 2013/04/23 | ||||
| アプリケーション・ノート | AN-2020 Thermal Design By Insight, Not Hindsight (Rev. C) | 2013/04/23 | ||||
| 設計ガイド | SIMPLE SWITCHER® Design Guide | 2011/04/11 | ||||
| ユーザー・ガイド | LM22670 Evaluation Board Inverting Topology and Application Notes (jp) | 2009/07/09 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
LM22670EVAL — LM22670 3A 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 LM22670 evaluation board is designed to demonstrate the capabilities of the LM22670 switching regulator. The LM22670 evaluation board is configured to provide an output voltage of 3.3V up to 3A load current with an input voltage range of 4.5V to 42V. Due to the low RDS(ON) of the integrated (...)
LM22670INVEVAL — LM22670 反転出力レギュレータ、周波数調整または周波数同期搭載最大 1MHz、高精度イネーブル付 評価モジュール
The LM22670 inverting evaluation board is designed to demonstrate the capabilities of the LM22670 switching regulator in a polarity inverting topology. The LM22670 inverting evaluation board is configured to provide an output of minus 5V (-5V) up to 1.5A load current with an input voltage range of (...)
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 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| TO-263 (NDR) | 7 | Ultra Librarian |