E-SG3525AN

Frequency - Switching:	100Hz ~ 400kHz
Base Part Number:	SG3525A
Supplier Device Package:	16-DIP
Package / Case:	16-DIP (0.300", 7.62mm)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Enable, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	49%
Series:	--
Voltage - Supply (Vcc/Vdd):	8 V ~ 35 V
Output Phases:	1
Number of Outputs:	2
Topology:	Buck, Push-Pull
Output Configuration:	Positive
Function:	Step-Down, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tube

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E-SG3525AN application field and working principle

The E-SG3525AN is a family of integrated pulse width modulation (PWM) switching controllers with built-in high side and low side gate drivers. It is part of a larger range of switching controllers called PMIC (Power Management Integrated Circuits). This specific controller is classified among Voltage Regulators and DC DC Switching Controllers.The E-SG3525AN is an ideal choice for cost-sensitive, high-power non-isolated DC/DC applications such as telecommunication power supplies, distributed power architectures, notebooks, industrial and medical off-line supplies, and automotive applications. The wide-range voltage operating mode of 5.5 V to 18 V makes the E-SG3525AN the ideal solution for cost-effective non-isolated DC/DC applications. Traditional buck and forward configurations are possible, with a single cycle PWM control of pulse width modulation (PWM).The built-in over-voltage protection (OVP) and under-voltage protection (UVP) structures protect the device and load during over-voltage and under-voltage conditions. In addition, the built-in fault protection (FP) will protect against simple open-loop and over-current conditions. The E-SG3525AN is also compatible with most industry standard controllers. This allows for reliable and easy-to-use application flexibility, a valuable design advantage. It is also compatible with many high-performance synchronous buck and DC/DC converter controllers.The E-SG3525AN integrates six high-voltage MOSFET drivers, one low-side MOSFET driver and a PWM switching controller into a compact monolithic package. The primary functions of the device include Control of high-side MOSFETs, low-side MOSFETsControl of the soft-start transitions from off to onShort circuit protectionOver temperature protectionHigh and low side current senseIn addition, the device supports two types of control inputs for adjustable frequency synchronization and duty cycle control, as well as pulse-by-pulse current sensing based on global sensing or local sensing pins. The SG3525AN also incorporates under-voltage lock-out functionality, which prevents the converter from restarting until the supply voltage is within the safety window. The E-SG3525AN has a maximum output frequency of 1 MHz and a minimum on-time of 0.5 µs, ensuring a minimum 4:1 output power ratio. It also has an operating temperature range of -40 °C to 125 °C. The E-SG3525AN comes in a power efficient and reliable 16-pin SOIC surface-mount package, providing ease of installation and allowing for easier placement and routing of the board. Furthermore, the device is pin and drop-in compatible with the SG1525A.Overall, this is a great choice for a DC/DC controller because of its wide input voltage range and very high frequency operation. The device is highly suitable for applications that require high cost-effectiveness and reliability in the design of power management solutions.

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