MAX1697UEUT-T

Voltage - Output (Min/Fixed):	-Vin, 2Vin
Base Part Number:	MAX1697
Supplier Device Package:	SOT-23-6
Package / Case:	SOT-23-6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	120kHz ~ 400kHz
Current - Output:	60mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	1.6V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive or Negative
Function:	Ratiometric
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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The MAX1697 UEUT-T is a type of DC switching regulator IC (Integrated Circuit), categorised under the broad label of PMIC - Voltage Regulators - DC DC Switching Regulators. It is one of the most efficient voltage regulators available in the market, providing up to 95% power conversion efficiency. Designed to operate at 1.3V to 5.5V input voltages, the MAX1697 presents an ideal solution for applications such as battery-powered systems, USB power applications and digital cameras.The MAX1697 is a step-down regulator specifically designed for ultra-high efficiency and low power consumption. It achieves ultra-low quiescent current of 1μA at light loads by utilizing an inherently high-efficiency architecture. An internal synchronous rectifier eliminates the need for an external diode, thus improving system performance and reliability. The MAX1697 incorporates a configurable current limit feature with external resistor programming. The device also supports a selectable soft-start controller, which allows the user to connect one or two external capacitors for ramp-rate control of the output voltage at start-up.The MAX1697 package comes with a high efficiency, direct PWM controller, an internal synchronous rectifier, programmable current limit, soft-start ramp rate, over temperature protection (OTP) and a selectable clock frequency up to 4MHz. The high switching frequency converter increases the effective output current capability and reduces the overall component size while providing great performance. The device can be programmed to accept a wide range of input and output voltages, thus making it suitable for a variety of applications.It has two control pins - a shutdown pin, which when driven high disables the output, and a mode pin, which enables low-power or shutdown modes. These two pins help to save power and reduce switching noise. The device is also capable of fast dynamic response, enabling it to adjust to sudden changes in demand without any problem.When it comes to working principle, the MAX1697 requires two components to operate - an input capacitor and an inductor. The input capacitor provides a smooth dc bus voltage and helps to reduce ripple and noise, while the inductor transfers power from the input voltage source to the regulated output. The MAX1697 uses an on-chip error amplifier to compare the regulated output voltage to an internal reference and drives an external P-channel and N-Channel MOSFETs (Metal Oxide Semiconductors) to control the current flow. This switching action is then regulated to keep the output voltage stable.In conclusion, the MAX1697 is a versatile, ultra-efficient and low-power PMIC switching regulator. Its features such as programmable current limit, soft-start ramp rate control and low quiescent current make it a great choice for power-sensitive applications such as phones, laptops and cellular devices. Additionally, it is highly efficient and capable of providing up to 95% power conversion efficiency which makes it both energy-efficient and cost-effective. In summary, it is a much-needed IC for high performance systems.

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