LM21215
- Integrated 7-mΩ high-side and 4.3-mΩ low-side FET switches
- Adjustable current limit
- Adjustable output voltage from 0.6 V to VIN (100% duty cycle capable), ±1% reference
- 2.95-V to 5.5-V input voltage range
- 500-kHz fixed switching frequency
- Start-up into prebiased loads
- Output voltage tracking capability
- Wide bandwidth voltage loop error amplifier
- Adjustable soft start with external capacitor
- Precision enable pin with hysteresis
- Integrated OVP, OTP, UVLO, and power good
- Thermally enhanced 20-pin HTSSOP exposed pad package
- Create a custom design using the LM21215 with the WEBENCH Power Designer
The LM21215 is a monolithic synchronous point-of-load buck regulator that is capable of delivering up to 15 A of continuous output current while producing an output voltage down to 0.6 V with outstanding efficiency. The device is optimized to work over an input voltage range of 2.95 V to 5.5 V, making it suitable for a wide variety of low voltage systems. The voltage mode control loop provides high noise immunity, narrow duty cycle capability and can be compensated to be stable with any type of output capacitance, providing maximum flexibility and ease of use.
The LM21215 features internal overvoltage protection (OVP) and resistor-programmable overcurrent protection (OCP) for increased system reliability. A precision enable pin and integrated UVLO allow turn-on of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable soft-start circuit. Fault detection and supply sequencing are possible with the integrated power good circuit.
The LM21215 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track an external voltage rail using the SS/TRK pin. If the output is prebiased at start-up, it will not sink current, allowing the output to smoothly rise past the prebiased voltage. The regulator is offered in a 20-pin HTSSOP package with an exposed pad that can be soldered to the PCB, eliminating the need for bulky heat sinks.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM21215 2.95-V to 5.5-V, 12-A, Voltage-Mode Synchronous Buck Regulator datasheet (Rev. G) | PDF | HTML | 2022年 3月 30日 |
| Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 2021年 4月 8日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| User guide | AN-2130 LM21215 Evaluation Board (Rev. A) | 2013年 5月 5日 |
設計與開發
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LM21215EVM — 適用於 LM21215 的評估板
This evaluation board provides a solution to examine the high efficiency LM21215 buck switching regulator. The LM21215 is capable of driving up to 15A of continuous load current with excellent output voltage accuracy due to its ±1% internal reference. The LM21215 is capable of down converting from (...)
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HTSSOP (PWP) | 20 | 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