TPS61055YZGR

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The TPS61055YZGR is a current regulator that belongs to the category of PMIC - LED Drivers. It is designed to provide a constant current to LEDs. This LED driver has many applications in LED display, LED sign, LED emergency light, LED flashlights, LED backlight lighting, LED task lighting, LED headlamp, LED luminaire etc. This LED driver is made with a topology of a 4-switch Buck Boost Converter which makes it highly efficient and can operate over a wide input voltage range.

The working principle of the TPS61055YZGR is based on the concept of current mode control. It has four integrated MOSFETs, i.e. an external P-Channel MOSFET, an external N-Channel MOSFET, and two integrated switch MOSFETs. The P-Channel and the N-Channel external MOSFETs forms a 4-switch buck-boost converter. This converter is controlled by a hysteretic current mode control loop in the IC. The external PMOS and NMOS are triggered by the logic input pins Enable, EN1 and EN2. The EN1 and EN2 pins control the 3-phase modulation of the buck-boost converter, setting the minimum and the maximum duty cycle of the loop.

The TPS61055YZGR has many features that makes it an ideal choice for LED lighting applications. It has an adjustable output current from 500mA to 3150mA and it can provide an efficiency of up to 93%. With the Accurate Mode Control, it can regulate the output current with a load accuracy up to ±4%. It has an integrated boost diode which eliminates the need for the external rectifier diodes for further space reduction. It has an operating temperature range of 0 to +125℃ and a wide operating voltage range of 4.5V to 40V. It has an over-voltage protection (OVP) and over-current protection (OCP) feature which makes it reliable and safe to use. It also has an Internal Soft-Start Feature which eliminates the need for an external soft-start capacitor.

The TPS61055YZGR is a highly efficient and advanced current regulator which is suitable for use in LED lighting applications. It provides a regulated output current across a wide range of voltage inputs, making it a great choice for LED lighting displays, signs, emergency lighting, flashlights, backlighting, task lighting, headlamps, and luminaires. It has an efficiency of up to 93% and a load accuracy of up to ±4%. It also has an over-voltage protection and over-current protection feature for added reliability and safety. With its integrated boost diode, it eliminates the need for external rectifier diodes for space reduction.

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