1 Features

1• 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

2 Applications

• IR LED for Day or Night Vision

– IP Network Camera

– Analog Security Camera

– Video Doorbell

– Embedded Camera System

• LED Display and Lighting

– Refrigerators and Freezers

– Electronic Smart Lock

– General-Purpose LED Driver

– Architecture Lighting

3 Description

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.