TPS61054DRCT

Voltage - Output:	5.5V
Base Part Number:	TPS61054
Supplier Device Package:	10-VSON (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	Camera Flash, Lighting
Dimming:	PWM
Frequency:	2MHz
Current - Output / Channel:	700mA (Flash)
Series:	--
Voltage - Supply (Max):	6V
Voltage - Supply (Min):	2.5V
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	Step-Up (Boost)
Type:	DC DC Regulator
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS61054DRCT Application Field and Working Principle

The Texas Instruments TPS61054DRCT is a DC-DC step-up converter specifically designed for driving LEDs. This device is packaged in a space-saving 6-pin SOT-23 package and is especially suitable for portable applications with limited board space.The TPS61054DRCT was developed by Texas Instruments to provide a simple and convenient solution for advanced LED lighting devices. The device includes an internal high-efficiency DC/DC step-up converter with a maximum switch current of 500mA. Additionally, TPS61054DRCT is able to achieve up to 96.5% conversion efficiency, making it one of the most efficient solutions for LED lighting solutions.

Operating Range

The TPS61054DRCT has a wide input voltage range from 2.7V to 5.5V, and its output can be set as either a fixed output voltage or an adjustable output voltage via a single external resistor. Other features include an adjustable current limit, thermal shutdown, a low shutdown current of 0.2uA, and reverse current protection.

Applications

The TPS61054DRCT is the perfect device for LED lighting systems that require high efficiency or low cost solutions. The device can be used in a variety of applications including general lighting, decorative lighting, backlighting, and medical lighting, among others.

Working Principle

The basic operating principle of the TPS61054DRCT is that it uses an internal high-efficiency DC/DC converter to convert a low input voltage to a higher output voltage. This is done by means of a boost-mode circuit that has an inductor and switch connected in series, to capture and release energy.In order to regulate its output, the device controls the switch on/off time ratio to the average output voltage. When the input voltage is applied, the controller starts to switch the switch ON, while the inductor stores energy in the form of a magnetic field. When the switch is turned off, the magnetic field collapses and the stored energy is released to the output.Each time the switch is turned on and off, the output voltage is increased and decreased accordingly. In order to maintain a constant output voltage, the controller will use pulse-width modulation (PWM) to control the duty cycle and frequency. Thus, the output voltage can be maintained regardless of changes in load or input voltage.

Conclusion

The TPS61054DRCT is a perfect solution for LED lighting systems that need a flexible, safe, and reliable solution. The device has a wide operating range, low shutdown current, and a high efficiency DC/DC converter. Additionally, its adjustable current limit and thermal shutdown features ensure that it operates in a safe, reliable, and efficient manner.

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