LM3754
- Wide Input Voltage Range of 4.5V to 18V
- Up to 12 Channels for 300A Load
- System Accuracy Better Than 1%
- 0.6V to 3.6V Output Voltage Range
- Switching Frequency From 200 kHz to 1 MHz
- Phase Current Sharing ±12% Max Over Temperature
- Integrated 4.35V ±2.3% LDO
- Inductor DCR or Sense Resistor Current Sensing
- Interleaved Switching for Low I/O Ripple Current
- Integrated Synchronous NFET Drivers
- Programmable Soft-Start
- Pre-Biased Startup
- Output Voltage Differential Remote Sensing
- Minimum Controllable On-Time of Only 50 ns
- Programmable Enable and Input UVLO
- Power Good flag
- OVP, UVP and Hiccup Over-Current Protection
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The LM3754 is a full featured single-output dual-phase voltage-mode synchronous PWM buck controller. It can be configured to control from 2 to 12 interleaved power stages creating a single high power output. This controller utilizes voltage-mode control with input voltage feed-forward for high noise immunity. An internal average current loop forces real time current sharing between phases during load transients.
The LM3754 supports adjustable Soft-Start. The Soft-Start function can only drive the output upwards – it will not pull it down, therefore, pre-biased loads will not be discharged. Available in the 5 mm x 5 mm thermally enhanced 32-lead WQFN package with a thermal pad.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM3754 Scalable 2-Phase Synchronous Buck Controller w/ FET datasheet (Rev. B) | 2013年 4月 5日 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Analog Design Journal | Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics | 2016年 7月 21日 | ||
| Analog Design Journal | 1Q 2012 Issue Analog Applications Journal | 2012年 1月 31日 | ||
| Analog Design Journal | Benefits of a multiphase buck converter | 2012年 1月 31日 | ||
| EVM User's guide | AN-2021 LM3753/54 Evaluation Board | 2009年 12月 15日 |
設計與開發
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| 封裝 | 引腳 | 下載 |
|---|---|---|
| WQFN (RTV) | 32 | 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