S-1335J17-M5T1U3

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The S-1335J17-M5T1U3 is a PMIC - Voltage Regulators - Linear device developed by Semtech Corporation. It is an adjustable volt-step down integrated regulator for portable applications such as GPS, notebook, and mobile phones. This device features an adjustable output voltage of 0.8V to 1.225V and is designed for minimal power consumption and noise.

The S-1335J17-M5T1U3 is an integrated regulator integrated with a 150mΩ power switch and a 0.5A current limit control terminal. Its output voltage is adjustable through an external resistor divider network to provide a low voltage supply rail while minimizing power consumption. It also includes a voltage reference, an operational amplifier and a gate driver, making the device ideal for wide range applications such as Dynamic Voltage Scaling, DCDC conversion, VRD conversion and embedded core supply.

The S-1335J17-M5T1U3’s main application fields include GPS, notebook, and digital cameras. By integrating voltage regulation and power conversion, the device can reduce solution size, improve total efficiency and increase system performance in portable applications. The device offers excellent noise immunity and high efficiency and is capable of delivering 0.5A continuous output current and can be used in both step-down and step-up application with little or no additional circuitry.

The key features and operational aspects of the S-1335J17-M5T1U3 are summarized below:

• Output Voltage: 0.8V to 1.225V, adjustable via external resistor divider network
• Input Voltage Range: 2.5V to 5.5V
• Input Current Limit: 0.5A
• Output Current Limit: 0.5A
• Output Ripple Voltage: <10mV
• Gain: >100mV/V
• Input-Output Voltage Difference: <2V
• Ripple Rejection: 70 dB
• Switching Frequency: 400kHz
• Operating Temperature: -40°C to +125°C

The S-1335J17-M5T1U3 operates on a 3-pin voltage regulator principle to provide a stable voltage source in either step-down or step-up configurations. It works by controlling the input voltage through an output voltage regulation loop that pulls or pushes the variable from an external resistor divider network connected to the adjustable voltage regulator output. This is designed for efficient power conversion, minimal power consumption and noise.

The device is constructed with a pair of transistors - an NPN and a PNP transistor, connected to the input voltage switch. When the input voltage is higher than the output voltage a P-channel MOSFET is activated and the output voltage is regulated by pulling the control loop. Conversely, when the input voltage is lower than the output voltage, an N-channel MOSFET is activated and the output voltage is regulated by pushing the control loop. The regulator also features the standard Soft Start circuitry, peak current limiting and thermal shut-down for additional safety features.

In summary, the S-1335J17-M5T1U3 is a PMIC - Voltage Regulators - Linear device which provides an adjustable output voltage of 0.8V to 1.225V in either step-down or step-up configurations. It is suitable for a variety of portable applications such as GPS, notebook, and digital cameras. It is constructed with transistors, MOSFETs, and Soft Start circuitry, offering excellent noise immunity and high efficiency while minimizing power consumption and noise.

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