ICL7662CBA+T

Voltage - Output (Min/Fixed):	-Vin
Base Part Number:	ICL7662
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:	10kHz
Current - Output:	--
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	20V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Negative
Function:	Ratiometric
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction
The ICL7662CBA+T is a highly advanced switched-mode voltage regulator, commonly referred to as a "DC-DC switching regulator". The device is currently employed in a wide range of applications, including computer motherboards, automotive systems, industrial control systems, communication equipment, and renewable energy systems. This article will discuss the application field, working principle, and design characteristics of the ICL7662CBA+T.

Application Field
The ICL7662CBA+T is well-suited for applications in which a stable output voltage and low power dissipation is needed. It is designed for use with a wide range of input voltages, and can be used with both linear and switching power supplies. Its output is capable of providing up to 8A of continuous current. Furthermore, it’s ability to inherently reduce current consumption and RF interference makes it a good choice for use in high-frequency and sensitive electronic systems, such as those found in computer motherboards, automotive systems, and communication equipment.

Working Principle
The ICL7662CBA+T is designed to integrate a pulse-width modulation (PWM) controller, an operational amplifier, and a power MOSFET all in one package. The integrated circuit works by taking the input voltage and converting it into an average output voltage, which is adjustable through the setting of an external resistor and capacitor. The pulse-width modulation controller then generates the necessary pulses to control the power MOSFET. The device is able to automatically regulate the output voltage, even when varying amounts of load current is applied. Also, its ability to auto-discharge the timing capacitor provides improved accuracy and transient response to sudden load changes.

Design Characteristics
The ICL7662CBA+T is designed with a high efficiency at low input and output voltages, making it suitable for many different applications. It requires minimal external components, making it easy to use and reducing system cost. Furthermore, the device protects itself from a variety of potential faults and has good surge immunity. Also, the device includes a number of safety features, such as loss-of-load detection, undervoltage lockout, and thermal shutdown. The device also supports external synchronization, providing the user with the ability to synchronize multiple devices, which is ideal for applications that require synchronization of multiple switching regulators.

Conclusion
The ICL7662CBA+T is a highly advanced DC-DC switching regulator, designed to provide a stable output voltage with low power dissipation. It is well-suited for use with a wide range of input voltages, and can be used with both linear and switching power supplies. Its low power consumption, high efficiency, and extensive protection features make it ideal for a variety of applications, including computer motherboards, automotive systems, industrial control systems, communication equipment, and renewable energy systems.

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