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.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | 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 | 20 Jun 2018 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 Sep 2020 | ||
| Technical article | Helping physicians achieve faster, more accurate patient diagnoses with molecular | PDF | HTML | 20 May 2020 | |
| Application note | Driving a Peltier Element (TEC): Efficiency and Aging (Rev. A) | 16 Jan 2020 | ||
| Application note | Power and Dimming LED with TPS54200 and TPS54201 | 25 Apr 2017 | ||
| EVM User's guide | TPS54201EVM-818 28-V 1.5-A Buck LED Driver Evaluation Module User's Guide | 27 Feb 2017 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOT-23-THN (DDC) | 6 | Ultra Librarian |
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