SP7650ER-L

Voltage - Input (Max):	28V
Supplier Device Package:	26-DFN (7x4)
Package / Case:	26-PowerVFDFN
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	300kHz
Current - Output:	3A
Voltage - Output (Max):	27V
Voltage - Output (Min/Fixed):	0.8V
Series:	Power Blox™
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Discontinued at Digi-Key
Packaging:	Bulk

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Introduction

The SP7650ER-L is a multi-channel, DC-DC switching regulator integrated with both high- and low-side MOSFET drivers, a 500mA LDOs, clock buffers and regulators. The heavy MOSFETs allow for a wide range of application fields.It was designed for a wide range of applications including mobile phones, notebooks and hand-held electronics, and industrial control systems. It is available in a small 20 pin QFN package, providing a total solution set to address the design challenges associated with the power management of handheld devices, including a reduced BOM count, increased efficiency, improved real-time responsiveness and superior stability.

Application Fields

The SP7650ER-L has wide-spread application field. It could be used in mobile phone, notebooks and hand-held electronics, and also in industrial control systems. It is ideal to be used in applications where power saving or high efficiency is mandatory. However, it is not limited to the mentioned field, and it could also be used in other areas, such as lighting, white goods, motor control and computing.For example, in mobile phones and tablets, the SP7650ER-L can be used as a displays and power management solution as it provides accurate and reliable power control, and protection functionality for the display. In automotive applications, the SP7650ER-L can be used to provide power for guidance systems and safety systems, such as ABS, airbag, and brake systems. In industrial control, the DC-DC switched regulator can be used to control intelligent power supplies, DC to AC inverters and servomotors.

Working Principle

The SP7650ER-L is based on a DC-DC switching regulator architecture that uses a feedback voltage to control a power MOSFET switch. The power MOSFET switch is connected to a step-up inductor/diode network and generates a regulated output. A switching regulator works by using a step-up inductor/diode network to convert an input voltage to a higher voltage and then storing energy in the inductor. When the power MOSFET switch is turned ON, energy is stored into the inductor and the output voltage rises. When the switch is turned OFF, the inductor\'s stored energy is discharged into the output and the output voltage is kept regulated. The SP7650ER-L also has a 500mA low-dropout (LDO) voltage regulator with a low-noise linear regulator, programmable clock buffer and voltage reference. The LDO voltage regulator provides a stable low-voltage output and works as an error amplifier.

Conclusion

The SP7650ER-L is a multi-channel, DC-DC switching regulator that is ideal for a wide range of application fields such as mobile phone, notebooks and hand-held electronics, and industrial control systems. It features a 500mA LDO voltage regulator with a low-noise linear regulator, programmable clock buffer and voltage reference. Its power MOSFET switch converts an input voltage to a higher voltage and the inductor stores energy for regulated output. This IC will enable designers to create energy efficient power solutions for handheld devices.

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