TC7660SEPA

Voltage - Output (Min/Fixed):	-Vin, 2Vin
Base Part Number:	TC7660S
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	10kHz ~ 45kHz
Current - Output:	20mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	12V
Voltage - Input (Min):	1.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive or Negative
Function:	Ratiometric
Part Status:	Active
Packaging:	Tube

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PMIC – Voltage Regulators – DC DC Switching Regulators

As the demand for miniaturized solutions for power management continues to grow, manufacturers are turning to DC DC power modules that offer low power dissipation over a wide range of input and output voltages. One such unit is the TC7660SEPA, a DC DC Converter/Regulator (DDCR) integrated circuit (IC) developed by TOKO.

What is the TC7660SEPA?

The TC7660SEPA is a high-efficiency, low-noise, high-frequency DDCR specifically designed to minimize printed circuit board (PCB) space. It is rated to 300mA, with a total quiescent current of only 130A, making it ideal for low power applications. The IC is fully configurable and its output voltage can be adjusted between 0.9V and 3.3V depending on the design.

Features and Benefits

The TC7660SEPA features several features that make it well suited for applications in dc- or battery-powered electronics. It is equipped with an intelligent current limit circuit, which helps to protect against excessive current demand, and a built-in thermal shutdown, which protects against spatial overloads. The external component count is reduced substantially due to its low switching frequency of 800kHz, eliminating the need for large bulk capacitors. Other features include a soft-start feature for output voltage stability, a wide input voltage range of 1.8V-5.5V, and a selectable output frequency of 800Hz/1kHz.

Applications

The TC7660SEPA is well-suited to applications requiring low input and output voltages, such as digital cameras, PDAs, mobile phones, and other handheld electronics. Its small size and high efficiency make it an ideal choice for applications with limited space. Additionally, its low current consumption makes it suitable for battery-powered devices, and its wide input voltage range allows it to be used with either AC or DC power sources.

Working Principle

The TC7660SEPA works by first rectifying the incoming AC or DC input voltage and then converting it to an appropriate power level and output voltage. It does this by controlling the switching frequency and pulse width of an internal power MOSFET on the primary side. On the secondary side, the current is regulated via an additional power MOSFET.The IC also includes built-in protection circuitry to prevent overvoltage, short-circuit, overload, and thermal overload. In the event of an overload, thermal shutdown and current limit function are activated to protect the IC and the load circuitry.

Conclusion

The TC7660SEPA offers an efficient and cost-effective solution for applications needing low power, low voltage, and small footprint. Its integrated features, including built-in protection, low power consumption, and wide input voltage range, make it a great option for low-power devices. Additionally, its adjustable output voltage allows users to tailor the power according to their needs, making it an ideal solution for many applications.

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