TPS54200 Series

4.5V to 28V input voltage, synchronous buck LED driver

Catalog

4.5V to 28V input voltage, synchronous buck LED driver

Part	Supplied Contents	Voltage - Input [Max]	Voltage - Input [Min]	Outputs and Type	Utilized IC / Part	Voltage - Output [Min]	Voltage - Output [Max]	Features	Current - Output / Channel	Number of Outputs	Topology	Supplier Device Package	Package / Case	Voltage - Supply (Min) [Min]	Type	Voltage - Output	Voltage - Supply (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Internal Switch(s)	Frequency	Applications	Mounting Type	Dimming
Texas Instruments TPS54200EVM-818	Board(s)	28 V	4.5 V	1 Non-Isolated Output	TPS54200	1.5 V	23 V	Dimmable	1.5 A
Texas Instruments TPS54200DDCR									1.5 A	1	Buck	SOT-23-THIN	SOT-23-6 Thin TSOT-23-6	4.5 V	DC DC Regulator	28 V	28 V	-40 °C	125 ¯C		600 kHz	IR LED for Day or Night Vision LED Display and Lighting	Surface Mount	PWM

Catalog

4.5V to 28V input voltage, synchronous buck LED driver

Key Features

• 4.5-V to 28-V Wide Input RangeIntegrated 150-mΩ and 70-mΩ MOSFETs for 1.5‑A, Continuous Output CurrentLow, 2-µA Shutdown CurrentFixed 600-kHz FrequencyPeak Current Mode With Internal Compensation200-mV and 100-mV Sense Voltage During Analog and PWM Dimming ModesPrecision Analog Dimming (ADIM) by PWM InputLED-Open and -Short ProtectionSense-Resistor-Open and -Short ProtectionShutdown-and-Latch Mode Protection (TPS54200)Auto-Retry Mode Protection (TPS54201)Thermal Shutdown6-Pin SOT-23-THIN Package4.5-V to 28-V Wide Input RangeIntegrated 150-mΩ and 70-mΩ MOSFETs for 1.5‑A, Continuous Output CurrentLow, 2-µA Shutdown CurrentFixed 600-kHz FrequencyPeak Current Mode With Internal Compensation200-mV and 100-mV Sense Voltage During Analog and PWM Dimming ModesPrecision Analog Dimming (ADIM) by PWM InputLED-Open and -Short ProtectionSense-Resistor-Open and -Short ProtectionShutdown-and-Latch Mode Protection (TPS54200)Auto-Retry Mode Protection (TPS54201)Thermal Shutdown6-Pin SOT-23-THIN Package

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. Cycle-by-cycle current limit in the high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. There is a low-side MOSFET sinking current limit to prevent excessive reverse current. For safety and protection, the TPS54200 and TPS54201 devices include LED-open and -short protection, sense-resistor-open and -short protection, and device thermal protection. The TPS54200 device implements shutdown-and-latch mode protection, whereas the TPS54201 device adopts auto-retry mode protection. 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. Cycle-by-cycle current limit in the high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. There is a low-side MOSFET sinking current limit to prevent excessive reverse current. For safety and protection, the TPS54200 and TPS54201 devices include LED-open and -short protection, sense-resistor-open and -short protection, and device thermal protection. The TPS54200 device implements shutdown-and-latch mode protection, whereas the TPS54201 device adopts auto-retry mode protection.