TC110503ECTTR

Frequency - Switching:	100kHz ~ 300kHz
Base Part Number:	TC110503
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	92%
Series:	--
Voltage - Supply (Vcc/Vdd):	2 V ~ 10 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PMIC - Voltage Regulators - DC DC Switching Controllers

The TC110503ECTTR, which comes from the family of DC DC Switching Controllers offered by Texas Instruments, is an advanced, low-power switched-mode power supply (SMPS) that is specifically tailored to effectively support portable hand-held applications. The device is qualified to the AEC-Q100 automotive grade specification, making it a potent solution for a wide array of applications from consumer products to industrial and healthcare equipment.

Application Field

The main targeted application for the TC110503ECTTR is for use in consumer electronic devices, such as portable communications and entertainment equipment, including tablets and laptop computers. Thanks to its low power capability, the device is also capable of providing support for power-sensitive consumer electronics, such as medical, automotive, and even internet of things (IoT) applications.

Working Principle

The TC110503ECTTR consists of an integrated set of power supply control functions, including integrated inductor current sensing, voltage monitoring, and regulation, as well as switching frequency adjustment, step-down voltage regulation, and reverse-current protection.To begin the supply sequence, the part first ensures that the output voltage is safely within the allowed limits. Once the voltage regulation loop is closed, the device enters into an active power-conversion mode, which starts the fundamental operation. An internal active loop takes control of the output and sets the required voltage.A synchronous rectifier and an inductor are incorporated, helping ensure that low output voltage ripple is maintained over the entire load range, while high power conversion efficiency is maintained. The synchronous rectifier eliminates the need for external high-frequency diodes, which in turn offers the ability to use the available space more effectively. The TC110503ECTTR can be fixed to the PCB using solder paste or screw mountings.

Protection Features

On-die temperature sensing helps guarantee safe operation of the part, as do a variety of on-chip protection features. These include over-temperature protection, reverse-current protection, and current-limit protection. In addition, voltage feedback, along with a separate clock frequency control and dead-time adjustment, help the part quickly respond to external factors, such as line and load transients, ensuring optimal performance over time.The remarkable assortment of on-chip protection functions offered by the TC110503ECTTR ensure that the part can deliver superior efficiency and switching performance even in challenging operating conditions, making it an ideal choice for applications where space is a premium. The integrated features also provide improved system safety and increased operational reliability.

Conclusion

The TC110503ECTTR is the perfect solution for meeting the increasingly stringent demands of the portable electronics market. Its ability to reduce the component count and provide superior power management capabilities makes the TC110503ECTTR an attractive option for designers looking to reduce the complexity and cost of their applications. The rich set of integrated features, advanced protection functions, and low power consumption also make it an ideal choice for use in portable and industrial applications.

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