現在提供此產品的更新版本
功能相同，但針腳輸出與所比較的裝置不同。
LM43603-Q1
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Operating Junction Temperature
- 27-µA Quiescent Current in Regulation
- High Efficiency at Light Load (DCM and PFM)
- Meets EN55022/CISPR 22 EMI Standards
- Integrated Synchronous Rectification
- Adjustable Frequency Range: 200 kHz to 2.2 MHz (500 kHz default)
- Frequency Synchronization to External Clock
- Internal Compensation
- Stable With Almost any Combination of Ceramic, Polymer, Tantalum, and Aluminum Capacitors
- Power-Good Flag
- Soft Start into a Pre-Biased Load
- Internal Soft Start: 4.1 ms
- Extendable Soft-Start Time by External Capacitor
- Output Voltage Tracking Capability
- Precision Enable to a Program System UVLO
- Output Short Circuit Protection with Hiccup Mode
- Overtemperature Thermal Shutdown Protection
- Create a Custom Design Using the LM43603-Q1 With the WEBENCH® Power Designer
The LM43603-Q1 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 3 A of load current from an input voltage ranging from 3.5 V to 36 V (42 V absolute maximum). The LM43603-Q1 provides exceptional efficiency, output accuracy, and dropout voltage in a very small solution size. An extended family is available in 0.5-A, 1-A, and 2-A load current options in pin-to-pin compatible packages. Peak current mode control is employed to achieve simple control loop compensation and cycle-by-cycle current limiting. Optional features such as programmable switching frequency, synchronization, power-good flag, precision enable, internal soft-start, extendable soft start, and tracking provide a flexible and easy to use platform for a wide range of applications. Discontinuous conduction and automatic frequency modulation at light loads improve light load efficiency. The family requires few external components and pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VCC undervoltage lockout, cycle-by-cycle current limit, and output short circuit protection. The LM43603-Q1 device is available in the HTSSOP (PWP) 16-pin leaded package (6.6 mm × 5.1 mm × 1.2 mm). The LM43603A-Q1 version is optimized for PFM operation and recommended for new design. The device is pin-to-pin compatible with LM4360x and LM4600x family.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM43603-Q1 3.5-V to 36-V, 3-A Synchronous Step-Down Voltage Converter datasheet (Rev. C) | PDF | HTML | 2017/10/20 | ||
| 應用說明 | Differences Between LM4600x/LM4360x A and Non-A OPNs | 2018/3/27 | ||||
| 技術文章 | A complete low-voltage backup battery solution for eCall systems | PDF | HTML | 2016/3/5 | |||
| 技術文章 | Overcoming automotive cluster power supply design challenges | PDF | HTML | 2015/11/13 | |||
| 應用說明 | Inverting Applications Made SIMPLE With LM4600x and LM4360x (Rev. B) | 2015/2/20 | ||||
| 應用說明 | Thermal Design Made Simple With LM43603 and LM46002 | 2014/9/15 | ||||
| 應用說明 | Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) | 2014/9/12 | ||||
| 應用說明 | Compensation Made SIMPLE With LM4360x, LM4600x | 2014/7/29 | ||||
| 應用說明 | Automotive Line Transient Protection Circuit | 2014/7/1 | ||||
| 應用說明 | AN-1197 Selecting Inductors for Buck Converters (Rev. B) | 2013/4/23 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
LM43603PWPEVM — LM43603PWP 同步降壓轉換器評估模組
LM43603PWPEVM 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估 LM43603PWP 同步降壓轉換器。此 EVM 可在 3.5V 至 36V 輸入之間運作，並在 3A 時提供 3.3V 輸出。
LM43603 Non-Inverting and Inverting PSpice Transient Model (Rev. A)
LM43603 Non-Inverting and Inverting Unencrypted PSpice Transient Model (Rev. A)
PMP9769 — 中間電壓較低的車用緊急呼叫電源參考設計
該參考設計包含一套完整的電源管理解決方案，專為汽車環境中的獨立緊急呼叫 (eCall) 系統所設計。電路直接由汽車電池軌供電。該設計同時管理備用電池，當車輛主電源無法供電時，可持續為 eCall 系統提供電力。該設計包含電源路徑管理功能，能將可用電源直接分配至四個 DC/DC 轉換器，這些轉換器負責為 eCall 系統的各功能模組供電。解決方案經過最佳化，可在由備用電池供電時以最大效率運作。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。