LM26420
- Compliant with CISPR25 Class 5 Conducted Emissions
- Input Voltage Range of 3 V to 5.5 V
- Output Voltage Range of 0.8 V to 4.5 V
- 2-A Output Current per Regulator
- High Switching Frequency: 2.2 MHz (LM26420X)
0.55 MHz (LM26420Y) - 0.8 V, 1.5% Internal Voltage Reference
- Internal Soft Start
- Independent Power Good and Precision Enable for Each Output
- Current Mode, PWM Operation
- Thermal Shutdown
- Overvoltage Protection
- Start-up into Prebiased Output Loads
- Regulators are 180° Out of Phase
- Create a Custom Design Using the LM26420 With the WEBENCH® Power Designer
The LM26420 regulator is a monolithic, high-efficiency dual PWM step-down DC/DC converter. This device has the ability to drive two 2-A loads with an internal 75-mΩ PMOS top switch and an internal 50-mΩ NMOS bottom switch using state-of-the-art BICMOS technology results in the best power density available. The world-class control circuitry allow on times as low as 30 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.8 V.
Although the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current. The LM26420 utilizes current-mode control and internal compensation to provide high performance regulation over a wide range of operating conditions.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM26420 Dual 2-A, High-Efficiency Synchronous DC/DC Converter datasheet (Rev. L) | PDF | HTML | 2018年 4月 13日 |
| Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 2021年 4月 8日 | ||
| Technical article | Design an automotive cluster power supply | PDF | HTML | 2015年 10月 16日 | |
| Technical article | How to overcome automotive front-end design challenges | PDF | HTML | 2015年 9月 10日 | |
| Technical article | How to design a quiet and compact industrial power supply | PDF | HTML | 2015年 7月 21日 | |
| Technical article | Spread Spectrum: Headache tablet or vitamin pill? | PDF | HTML | 2015年 5月 18日 | |
| White paper | Power Management IC (PMIC) Guide for Automotive (Rev. A) | 2014年 10月 29日 | ||
| EVM User's guide | AN-1870 LM26420 Evaluation Board (Rev. B) | 2013年 4月 24日 | ||
| Application note | AN-1973 Benefits and Challenges of High-Frequency Regulators (Rev. A) | 2013年 4月 23日 |
設計與開發
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LM26420XMHEVAL — LM26420 2.2 MHz、eTSSOP 同步降壓評估板
The LM26420 Evaluation board was designed to provide two 2A outputs, VOUT1 and VOUT2 . It is available in either the eTSSOP package option of the LM26420 for easier probing or the LLP version for evaluating the smaller package. The design emphasizes on the compactness of the LM26420 PCB layout and (...)
LM26420XSQEVAL — LM26420 2.2 MHz、LLP 同步降壓評估板
The LM26420 Evaluation board was designed to provide two 2A outputs, VOUT1 and VOUT2 . It is available in either the eTSSOP package option of the LM26420 for easier probing or the LLP version for evaluating the smaller package. The design emphasizes on the compactness of the LM26420 PCB layout and (...)
PMP9458 — 適用於汽車儀錶板裝置的 CISPR 25 5 級額定 14W 多重輸出電源供應參考設計
TIDM-HAHSCPTO — 高可用性高速計數器 (HSC) 和脈衝串輸出 (PTO) 參考設計
TIDA-01322 — 適用於工業應用的低壓差 (LDO)、高電流和無偏壓軌參考設計
PMP9477 — 適用於汽車儀錶組單元且具有預升壓功能的 CISPR 25 5 級額定多重輸出電源
PMP9492 — 適合後視攝影機、車用 ADAS 系統的 CISPR 25 第 5 級多重輸出電源參考設計
PMP9462 — 寬輸入電壓低雜訊三路輸出降壓轉換器參考設計
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HTSSOP (PWP) | 20 | 檢視選項 |
| WQFN (RUM) | 16 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點