Switch DC/DC convert circuit

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SSP8018

SSP8018 is a synchronous boost converter designed for battery-powered devices. The device supports a variety of battery types, including alkaline, nickel-metal hydride rechargeable batteries, lithium-manganese batteries, and lithium-ion rechargeable batteries. Its standout advantage lies in its high efficiency under light load conditions, a characteristic crucial for extending battery life. In the application scenario of 3.3V boost to 5V, the chip is able to output current up to 300mA. Of particular note is the system achieving up to 90% conversion efficiency at a load current of 200mA. SSP8018 chip offers two operating modes to suit different application scenarios: buck mode and pass-through mode. In buck mode, when the input voltage is higher than the output voltage (VOUT<VIN<VOUT + 0.3V), the chip can still accurately adjust the output voltage to the target value. This mode is suitable for scenarios where a stable output voltage is required. When the input voltage exceeds the output voltage by more than 0.3V (VIN>VOUT + 0.3V), the chip automatically switches from buck mode to pass-through mode. In pass-through mode, the output voltage will follow the input voltage. SSP8018 has a true shutdown function that completely disconnects the load from the input power supply when the device is disabled, significantly reducing current consumption. SSP8018 is available in a fixed output voltage version.

SSP9492

SSP9492 is a monolithically integrated switched-off step-down constant-voltage driver with programmable output current, which can operate over a wide input voltage range and has excellent load and linearity regulation. Safety protection mechanisms of SSP9492 include peak current limiting per cycle, soft-start, over-voltage protection, temperature protection and short circuit protection, etc. It is very suitable for wide voltage input buck use. The unique soft-switching ZVS technology combined with the super junction medium-voltage MOSFET enables efficiency up to 93%. It supports typical circuit applications such as input 48V output 12V/2.5A, input 19V output 5V/4A, input 85V output 12V/2A, input 12V output 5V/3A.

SSP9323

SSP9323 is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 3A continuous output current over a wide input supply range, with excellent load and line regulation. COT PSM control operation provides very fast transient response and easy loop design as well as very tight output regulation. The RY9320 requires a minimal number of readily available, external components and is available in a space saving ESOP-8 package.

SSP9322

SSP9322 is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 2A continuous output current over a wide input supply range, with excellent load and line regulation. COT PSM control operation provides very fast transient response and easy loop design as well as very tight output regulation. The RY9320 requires a minimal number of readily available, external components and is available in a space saving SOT23-6 package.

SSP9302

The SSP9302 is a compact 5V Buck Converter which can deliver 1A output current. SSP9302 employs a proprietary control loop to achieve a fast transient load response. It keeps high converting efficiency in both light load and heavy load. SSP9302 is equipped with all kinds of protection, such as input over voltage protection, output short circuit protection, over current protection and over temperature protection. SSP9302 is consists of internal power tree generator, bandgap voltage reference module, under-Voltagelockout (UVLO) module, error amplifier, protection circuitry, driver block, current sensing block and two power MOSFETs. SSP9302 is housed in a SOT23-5 package.

SSP9301

The SSP9301 is a compact 5V Buck Converter which can deliver 1A output current. SSP9301 employs a proprietary control loop to achieve a fast transient load response. It keeps high converting efficiency in both light load and heavy load. SSP9301 is equipped with all kinds of protection, such as input over voltage protection, output short circuit protection, over current protection and over temperature protection. SSP9301 is consists of internal power tree generator, bandgap voltage reference module, under-Voltagelockout (UVLO) module, error amplifier, protection circuitry, driver block, current sensing block and two power MOSFETs. SSP9301 is housed in a SOT23-5 package.

SSP9312

The SSP9312 is a high frequency, synchronous, rectified,step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to achieve a 2A continuous output current over a wide input supply range, with excellent load and line regulation.The SSP9312 requires a minimal number of readily available, external components and is available in a space saving SOT23-6 package.

SSP9458

The SSP9458 is a monolithic, step-down, switch mode converter with a built-in power MOSFET. Capable of delivering up to 600mA of output current over a wide input supply range with excellent load and line regulation. At light loads, the regulator operates in low frequency to maintain high efficiency and low output ripple. The minimum input voltage may be as low as 4.5V and the maximum up to 60V, with even higher transient voltages. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown. The SSP9458 requires a minimal number of readily-available external components. The SSP9458 is available in a SOT23-6 package.

SSP9467

The SSP9467 is a high frequency step-down switching regulator with integrated internal high-side, high voltage power MOSFET. It provides 3.0A output with current mode control for fast loop response and easy compensation. The wide 6V to 40V input range accommodates a variety of step-down applications, including those in automotive systems. A 110μA operational quiescent current allows use in battery-powered applications. High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses. The frequency foldback prevents inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation. The SSP9467 is available in thermally enhanced ESOIC8 package.

SSP9452

The SSP9452 is a monolithic, step-down, switch-mode converter with a built-in power MOSFET. It achieves a 1.0A peak-output current over a wide input supply range.Current-mode operation provides a fast transient response and eases loop stabilization. The wide input range (5V to 40V) provides high efficiency output of 1.0A current. Low shutdown mode quiescent current of 2μA(or less) is suitable for battery-powered applications. High efficiency at light load condition is achieved by scaling down the switching frequency to reduce the switching and gate driving losses.The frequency folding technique helps prevent the inductance current from running out of control at startup. Hot shutdown provides reliable, fault tolerant operation.

Switch DC/DC convert circuit

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