1 Features
• 4.5-V to 65-V wide input range
• LED common anode connection
• Integrated 150-mΩ MOSFET with typical 3-A / 6-A
current limit
• Optional switching frequency: 100 kHz to 2.2 MHz
• Spread spectrum for TPS922053 and TPS922055
• Advanced dimming options:
– Analog dimming (256:1)
– Fast PWM dimming (150-ns pulse width)
– Hybrid and flexible dimming (2,000:1 at 20-kHz
PWM, 10,000:1 at 4-kHz PWM, 1,000,000:1 at
120-Hz PWM)
• CC / CV charging mode
• Full protection features:
– LED open and short protection
– Switching FET open and short protection
– External component failure protection
– Cycle-by-cycle current limit
– Thermal shutdown
– Fault output (open drain)
• Configurable thermal foldback curve
• VSON, WSON and SOT23 package options

2 Applications
• Constant illumination:
– Indoor, outdoor, professional lighting
– Medical, surgical lighting
– Projector, laser TV, printer, IP camera
• Instant illumination:
– Machine vision, camera flash
– Fire alarm, strobe
• CC and CV source:
– LCD backlighting
– Battery charging
– TEC control

3 Description
The TPS92205x family is a 2-A / 4-A nonsynchronous
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, PWM, hybrid 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 accuracy.
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.