現在提供此產品的更新版本
TPS54540B
- High efficiency at light loads with pulse skipping Eco-mode™
- 92-mΩ high-side MOSFET
- 146-µA operating quiescent current and
2-µA shutdown current - 100-kHz to 2.5-MHz Fixed switching frequency
- Synchronizes to external clock
- Low dropout at light loads with integrated BOOT recharge FET
- Adjustable UVLO and hysteresis
- 0.8 V 1% Internal voltage reference
- 8-Pin HSOIC with PowerPAD™ package
- –40°C to 150°C TJ operating range
- Create a custom design using the TPS54540B with the WEBENCH® Power Designer
The TPS54540B is a 42-V, 5-A step-down regulator with an integrated high side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces no-load-supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the EN (enable) pin is pulled low.
Undervoltage lockout is internally set at 4.3 V but can be increased using the EN pin. Output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.
A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.
The TPS54540B is available in an 8-pin thermally enhanced HSOIC PowerPAD package.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | TPS54540B 4.5-V to 42-V Input, 5-A step-down dc/dc converter with Eco-mode™ datasheet | PDF | HTML | 2019年 1月 24日 |
Application note | NRND & Differences TPS54340/360/540/560 and TPS54340B/360B/540B/560B | 2019年 4月 5日 |
設計與開發
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TPS54540 Unencrypted PSpice Average Model Package (Rev. A)
TPS54540 Unencrypted PSpice Transient Model Package (Rev. A)
封裝 | 引腳 | 下載 |
---|---|---|
HSOIC (DDA) | 8 | 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