MAX773CSD+T

Frequency - Switching:	300kHz
Base Part Number:	MAX773
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Enable, Low Battery
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	3 V ~ 16.5 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Output Type:	Transistor Driver
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Application field and working principle of MAX773CSD+T

The MAX773CSD+T is a monolithic synchronous step-down DC/DC switching controller, which belongs to the PMIC - Voltage Regulators - DC DC Switching Controllers category. It is widely used for power management in mobile applications such as notebooks, personal digital assistants (PDAs), cellular phones, and digital cameras. The MAX773CSD+T has several features including a low quiescent current, low on-resistance FETs, input voltage range of 3.3V to 28V, and output voltage range of 0.6V to 5.5V.The working principle of the MAX773CSD+T is fairly simple. It operates with a fixed frequency of 1MHz, which allows for high speed switching of its power transistor FETs. It uses a PWM control scheme to regulate the output voltage of its power FETs. It has an internal voltage regulator which provides a stable supply voltage. During steady-state operation, the voltage regulator maintains the output voltage of the power FETs. During start-up, the voltage regulator maintains a fixed 7.5V level until the voltage has reached the operating range.The MAX773CSD+T supports Burst Mode® operation and is equipped with both analog and digital frequency compensation with onboard monitoring and fault detection. It also provides two adjustable current limit settings for protection of the power FETs. It also features programmable soft start and programmable soft shut-down which help minimize current surges during start-up and shut-down.The MAX773CSD+T also features a power leakage monitor, on-chip circuit protection, and dual power supply capability. It has built-in over-voltage, reverse-polarity, over-temperature, and under-voltage protection. It also has an auto-restart feature which allows it to recover from certain fault conditions without user intervention.In summary, the MAX773CSD+T is a powerful and reliable monolithic synchronous step-down DC/DC switching controller. It offers a wide input voltage range and can be used for a variety of applications with power management needs. Its low quiescent current, low on-resistance FETs, adjustable current limit settings, and protection features make it an ideal choice for mobile applications.

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