TPS92201 1.5A High Efficiency Synchronous Buck LED Driver

1 Features

• 2.5V to 5.5V input voltage range

• 1.5A constant output current

• Up to 95% efficiency

• 0.1μA shutdown current

• 220mΩ (HS) / 170mΩ (LS) MOSFETs

• Up to 100% switching duty cycle

• 1.5MHz switching frequency

• Force PWM mode for low output ripple

(TPS92201)

• Power save mode for high efficiency in light load

(TPS92201A)

• 0.6V to VIN output voltage range

• 100mV feedback regulation voltage

• 1% to 100% analog dimming with high accuracy

• 20kHz to 200kHz PWM input frequency

• Internal soft startup

• Full protection with over current, LED open/short,

FB resistor open/short

• Thermal shutdown protection

• WSON and SOT563 package options

2 Applications

• Test and measurement

• Power delivery

• Building automation

– Smart home camera

– Video doorbell

– IP camera

– Smart doorlock

– Flashlight

3 Description

The TPS92201 is a high-efficiency 1.5A synchronous

buck-type LED driver with 2.5V to 5.5V input range.

By integrating the high-side and low-side MOSFET,

high efficiency and compact solution size can be

achieved. The ultra-low 1μA shutdown current helps

saving power in battery-powered applications.

Adaptive off-time with peak current control scheme is

adapted in the TPS92201. To get the smallest output

ripple, the device operates at typically 1.5MHz pulse

width modulation (PWM) mode in full current range.

Adaptive off-time with peak current control scheme is

adapted in the TPS92201A. At medium to heavy load,

the device operates in pulse width modulation (PWM)

mode with 1.5MHz switching frequency. At light

load, the device automatically enters pulse frequency

modulation (PFM) to maintain high efficiency over the

entire load current range.

The integrated switches have the capability to deliever

up to 1.5A constant current. Analog dimming is

achieved by adjusting the duty cycle of the PWM input

with 1% to 100% range. 20kHz to 200kHz input PWM

frequency can be supported to avoid audible noise.

For safety and protection, the TPS92201 device

implement full protections, including LED open, LED

short, FB resistor open, FB resistor short and thermal

shutdown.

Device Information

(1)

ORDERABLE PART

NUMBER

PACKAGE

BODY SIZE (NOM)

TPS92201DRV

WSON (6)

2mm × 2mm

(2)

TPS92201ADRV

WSON (6)

TPS92201DRL

SOT563 (6)

1.6mm × 1.6mm

TPS92201ADRL

SOT563 (6)

(1)

For more information, see Section 11.

(2)

The package size (length x width) is a nominal value and

includes pins, where applicable.

PWM

VIN

FB

GND

SW

VOUT

VIN:

2.5V - 5.5V

EN

2.2 H

R

SENSE

10 F

4.7 F

PWM:

20kHz - 200kHz

Simplified Schematic

TPS92201, TPS92201A

SLVSH40B – NOVEMBER 2023 – REVISED AUGUST 2024

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.