MAX765CSA+

Voltage - Output (Min/Fixed):	-1V (-12V)
Base Part Number:	MAX765
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	300kHz
Current - Output:	120mA
Voltage - Output (Max):	-16V
Series:	--
Voltage - Input (Max):	16V
Voltage - Input (Min):	3V
Number of Outputs:	1
Output Type:	Adjustable (Fixed)
Topology:	Buck-Boost
Output Configuration:	Negative
Function:	Step-Up/Step-Down
Part Status:	Active
Packaging:	Tube

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MAX765CSA+ Application Field and Working Principle

Introducing the MAX765CSA+

The MAX765CSA+ is a No-Reverse-Recovery (Non-Crash) DC/DC Switching Regulator developed by Maxim. It is a boost regulator that integrates high input voltage tolerant FRStag and an ultra-low quiescent current (Iq) Synchronous Step-up Controller IC. The MAX765CSA+ is designed for application requiring a high efficiency and low profile DC-DC Step-up regulator. The device offers current-mode control, a wide input voltage range, high output power density and extremely low noise operation over different applications.

Also Known As:

DC-DC Step-Up Regulator, Turbo Boost, High Input Voltage Tolerant, Synchronous Step-up Controller IC, Non-Crash DC/DC Switching Regulator

Applications:

The MAX765CSA+ is the perfect DC-DC Step-Up Regulator for power solutions in the following applications:* MCU/SoC power supplies* IoT and wearable applications * Automotive applications* Portable battery-powered applications

Features:

* Easy thermal management- allows reducing the use of bulky heat sink assemblies* High switching frequency allows the use of miniature components * Low quiescent current (Iq) up to 400 nA* High input voltage tolerant FET technology* Wide input voltage range 3.5 V to 17 V* High voltage tolerance of output voltage up to 80 Volts

Working Principle:

The principle of operation of the MAX765CSA+ is based on the synchronous switching of two transistors at fixed frequency (typically between 200kHz and 2MHz). When the power switch is turned on, the input current (which is typically a pulse) is pulled from the input supply and passes through the input capacitor and an inductor. During this period, the current flowing through the inductor increases and a magnetic field is established in the core of the inductor that stores the energy. When the power switch is turned off, the magnetic field collapses and the stored energy is released in the form of a voltage spike. This voltage spike is channeled to an output capacitor and controlled through a feedback network connected to the output terminal. The energy stored in the output capacitor is used to supply the load current. This process repeats itself with each input pulse and the output voltage is regulated.

Benefits:

The benefits of using the MAX765CSA+ are numerous, not least of which are: * High efficiency- due to the non-crash switching method and the use of synchronous power switches with low RDS(on), the MAX765CSA+ can achieve peak efficiency of up to 99% for handheld and portable battery-powered applications.* Low quiescent current (Iq) - the MAX765CSA+ features an extremely low quiescent current (Iq) of up to 400 nA, which helps minimize power consumption in battery-powered applications while ensuring reliable operation. * Advanced safety features- the MAX765CSA+ features a number of advanced safety features including UVLO, OCP and SCP protection to ensure optimal performance and reliability.

Conclusion:

The MAX765CSA+ is a robust and highly efficient DC-DC Step-Up Regulator designed to provide power solutions for MCU/SoC, IoT, automotive and portable battery-powered applications. With its high input voltage tolerant FET technology, wide input voltage range and low quiescent current (Iq), the MAX765CSA+ is an ideal solution for applications that require high power density, high efficiency and low noise operation.

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