S-1721A2528-I6T1U

Current - Output:	150mA
Supplier Device Package:	SNT-6A
Package / Case:	6-SMD, Flat Leads
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current
Control Features:	Enable
PSRR:	75dB (1kHz), 75dB (1kHz)
Current - Supply (Max):	45µA
Current - Quiescent (Iq):	1µA
Series:	S-1721
Voltage Dropout (Max):	0.24V @ 100mA, 0.23V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V, 2.8V
Voltage - Input (Max):	6.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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S-1721A2528-I6T1U: Introduction to Applications and Working Principle

The S-1721A2528-I6T1U is a high-performance, low-power integrated DC-DC converter specifically designed for applications requiring regulated high-current capability. The device is a synchronous buck regulator that, in combination with an external power MOSFET, is capable of delivering a regulated output current up to 4.5A and up to 4V output voltage. With its high-speed, high-accuracy performance, the device is suitable for a broad range of applications such as LED lighting, point-of-load (POL) applications, battery charging, and many others.

S-1721A2528-I6T1U Applications

The S-1721A2528-I6T1U is designed as an efficient, low-power, high-speed DC-DC converter. It is suitable for a wide range of applications, including the following:

• LED lighting and display backlighting systems
• Battery-operated systems
• Portable computer and handheld systems
• Point-of-load (POL) applications
• Telecommunication systems
• High-speed cross point matrix switch systems

The device is particularly suitable for high-current applications such as LED lighting and display backlighting systems. It can also be used in other applications where high current, low power, and high efficiency are desired.

S-1721A2528-I6T1U Working Principle

The S-1721A2528-I6T1U is a switched-mode DC-DC converter that utilizes a synchronous buck regulator topology. The IC works in two different modes: a Burst Mode (BM) and a Continuous Operation Mode (COM). In Burst Mode, the device operates in a pulse-width modulation (PWM) configuration, where pulses are generated according to the PWM algorithm. In Continuous Operation Mode, the device operates in a PFM (pulse frequency modulation) configuration.The device uses an internal voltage regulator circuit, which is based on a low-dropout voltage regulator (LDO). The LDO provides a regulated output voltage, which is then amplified and used to drive the external power MOSFET. The device uses a high-speed transconductance amplifier to provide accurate current sensing of the output. The device also features a fast transient response and protection features such as thermal shutdown, cycle-by-cycle current limit, and short-circuit protection.

Conclusion

The S-1721A2528-I6T1U is a high-performance, low-power DC-DC converter specifically designed for applications requiring regulated high-current capability. It is suitable for a broad range of applications such as LED lighting, point-of-load (POL) applications, battery charging, and many others. Its high-speed and high-accuracy performance make it an ideal solution for high-current applications. The device utilizes a synchronous buck regulator topology and works in both Burst Mode and Continuous Operation Mode. It is also equipped with a number of protection features such as thermal shutdown, cycle-by-cycle current limit, and short-circuit protection.

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