TPS922053 Series

65-V, 2-A buck LED driver with inductive fast dimming and spread spectrum

Catalog

65-V, 2-A buck LED driver with inductive fast dimming and spread spectrum

Part	Package / Case	Frequency [Min]	Frequency [Max]	Dimming	Current - Output / Channel [custom]	Applications	Type	Voltage - Supply (Max) [Max]	Number of Outputs	Internal Switch(s)	Voltage - Supply (Min) [Min]	Supplier Device Package	Voltage - Output [Max]	Voltage - Output [Min]	Topology	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]
Texas Instruments TPS922053DMTR	14-VDFN Exposed Pad	100 kHz	2.2 MHz	Analog PWM	2 A	Backlight Lighting	DC DC Regulator	65 V	1		4.5 V	14-VSON (4.5x3)	63 V	0 VDC	Step-Down (Buck)	Surface Mount Wettable Flank	-40 °C	125 ¯C
Texas Instruments TPS922053DYYR	SOT-23-14 Thin SOT-23 Variant	100 kHz	2.2 MHz	Analog PWM	2 A	Backlight Lighting	DC DC Regulator	65 V	1		4.5 V	14-SOT-23-THIN	63 V	0 VDC	Step-Down (Buck)	Surface Mount	-40 °C	125 ¯C

Catalog

65-V, 2-A buck LED driver with inductive fast dimming and spread spectrum

Key Features

• 4.5V to 65V wide input rangeLED common anode connectionIntegrated 150mΩ MOSFET with typical 3A / 6A current limitOptional switching frequency: 100kHz to 2.2MHzSpread spectrum for TPS922053 and TPS922055Advanced dimming options:Analog dimming (256:1)Fast PWM dimming (150ns pulse width)Hybrid and flexible dimming (2,000:1 at 20kHz PWM, 10,000:1 at 4kHz PWM, 1,000,000:1 at 120Hz PWM)CC/CV charging modeFull protection features:LED open and short protectionSwitching FET open and short protectionExternal component failure protectionCycle-by-cycle current limitThermal shutdownFault output (open drain)Configurable thermal foldback curveVSON, WSON and SOT23 package options4.5V to 65V wide input rangeLED common anode connectionIntegrated 150mΩ MOSFET with typical 3A / 6A current limitOptional switching frequency: 100kHz to 2.2MHzSpread spectrum for TPS922053 and TPS922055Advanced dimming options:Analog dimming (256:1)Fast PWM dimming (150ns pulse width)Hybrid and flexible dimming (2,000:1 at 20kHz PWM, 10,000:1 at 4kHz PWM, 1,000,000:1 at 120Hz PWM)CC/CV charging modeFull protection features:LED open and short protectionSwitching FET open and short protectionExternal component failure protectionCycle-by-cycle current limitThermal shutdownFault output (open drain)Configurable thermal foldback curveVSON, WSON and SOT23 package options

Description

The TPS92205x family is a 2A / 4A non-synchronous Buck LED driver with 4.5V to 65V 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 100kHz to 2.2MHz 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. The TPS92205x family is a 2A / 4A non-synchronous Buck LED driver with 4.5V to 65V 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 100kHz to 2.2MHz 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.