1 Features
• 4.5-V to 65-V wide input range
• LED common anode connection
• Integrated 300-mΩ/150-mΩ MOSFET for 2-A/4-A
continuous output current
• Optional switching frequency: 100 kHz ~ 2.2 MHz
• Spread spectrum for TPS922053 and the
TPS922055
• Advanced dimming options:
– Analog dimming (256:1)
– Fast PWM dimming (200-ns pulse width)
– Hybrid and flexible dimming (2000:1 at 20-kHz
PWM, 10,000:1 at 4-kHz PWM, 1,000,000:1 at
120-Hz PWM)
• CV charging mode
• Full protection features:
– LED open and short protection
– Cycle-by-cycle current limit
– Thermal shutdown
– Switching FET failure protection
– External component failure protection
– Fault output (open drain)
• Configurable thermal foldback curve
• SON, SOT and SOP package options

2 Applications
• Constant illumination:
– Indoor, outdoor, stage lighting
– Surgical lighting
– Projector, laser TV, printer, IP camera
• Instant illumination:
– Machine vision
– Camera flash, fire alarm, strobe
– VR and AR wearable
• CV and CC source:
– Battery charger
– TEC controller
– LCD backlight

3 Description
The TPS92205x family is a 2-A/4-A non-synchronous
Buck LED driver with 4.5-V to 65-V wide input range.
By integrating the low-side NMOS switch, the device
is capable of driving LEDs as well as charging
batteries with high power density and high efficiency.
The family also supports common anode connection
and single layer PCB design. The switching frequency
is configurable from 100 kHz to 2.2 MHz with optional
spread spectrum feature for better EMI performance.
The TPS92205x family supports four dimming
options, including analog dimming, PWM dimming,
hybrid dimming and flexible dimming. Each dimming
method can be configured through the PWM and
ADIM input pins by means of simple high and low
signals. The family adopts an adaptive off-time current
mode control along with smart and accurate sampling
to enable inductive fast dimming (IFD) and achieve
high dimming ratio.
The TPS92205x family also provides multiple
systematic protections, including LED open and short,
sense resistor open and short, configurable thermal
foldback and thermal shutdown. A Fault output
sends out acknowledge signals as soon as any fault
condition is detected.