TPS54200
- 4.5-V to 28-V Wide Input Range
- Integrated 150-mΩ and 70-mΩ MOSFETs for 1.5‑A, Continuous Output Current
- Low, 2-µA Shutdown Current
- Fixed 600-kHz Frequency
- Peak Current Mode With Internal Compensation
- 200-mV and 100-mV Sense Voltage During Analog and PWM Dimming Modes
- Precision Analog Dimming (ADIM) by PWM Input
- LED-Open and -Short Protection
- Sense-Resistor-Open and -Short Protection
- Shutdown-and-Latch Mode Protection (TPS54200)
- Auto-Retry Mode Protection (TPS54201)
- Thermal Shutdown
- 6-Pin SOT-23-THIN Package
The TPS54200 and TPS54201 devices are 1.5-A synchronous buck mono-color or IR drivers with 28-V maximum input voltage. Current-mode operation provides fast transient response and eases loop stabilization.
The TPS54200 and TPS54201 can be used to drive single-string or multi-string mono-color or Infrared (IR) LED arrays as in the case of night vision cameras.
By integrating the MOSFETs and employing the SOT-23-THIN package, the TPS54200 and TPS54201 devices provide high power density and only require a small footprint on the PCB.
The TPS54200 and TPS54201 devices implement analog dimming by changing the internal reference voltage proportional to the duty cycle of the PWM signal input in analog dimming mode. This devices also support PWM dimming mode, in which the internal reference voltage is halved to 100 mV for higher efficiency.
Cycle-by-cycle current limit in the high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. There is a low-side MOSFET sinking current limit to prevent excessive reverse current. For safety and protection, the TPS54200 and TPS54201 devices include LED-open and -short protection, sense-resistor-open and -short protection, and device thermal protection. The TPS54200 device implements shutdown-and-latch mode protection, whereas the TPS54201 device adopts auto-retry mode protection.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | TPS54200, TPS54201 4.5-V to 28-V Input Voltage, 1.5-A Output Current, Synchronous Buck Mono-Color or IR LED Driver datasheet (Rev. B) | PDF | HTML | 2018年 6月 20日 |
White paper | Common LED Functions and LED Driver Design Considerations | 2020年 9月 21日 | ||
Technical article | A simple and efficient LED driver for video surveillance cameras | PDF | HTML | 2017年 6月 5日 | |
Application note | Power and Dimming LED with TPS54200 and TPS54201 | 2017年 4月 25日 | ||
EVM User's guide | TPS54200EVM-818 Buck LED Driver Evaluation Module | 2016年 10月 17日 |
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)。
TPS54200EVM-818 — TPS54200 同步降壓 WLED 驅動器評估模組
TPS54200 TINA-TI Analog Dimming Transient Reference Design
TPS54200 TINA-TI PWM Dimming Transient Reference Design
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
SOT-23-THN (DDC) | 6 | Ultra Librarian |
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
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
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。