CHL8112A-07CRT

Series:	*
Part Status:	Obsolete

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Introduction

The CHL8112A-07CRT is a DC/DC switching controller that is designed for applications in portable electronic equipment. It is used for providing precisely regulated DC output voltage from a given DC input voltage. It utilizes a regulated pulse width modulation (PWM) modulation technique to control the switch for the output voltage regulation. The CHL8112A-07CRT can be used to design various DC/DC converters such as a buck, boost, or buck-boost converter.

Voltage Regulation

The CHL8112A-07CRT offers three different ways of output voltage regulation. The first way is through an externally adjustable reference voltage. The reference voltage can be adjusted to define the desired output voltage. The second way is through an external voltage divider network. Multiple voltage dividers can be used to adjust the reference voltage more precisely. The third way is through an internal feedback control loop. This loop is used to monitor the output voltage and adjust the switch duty cycle in order to keep the output voltage at a preset level.

Features

The CHL8112A-07CRT has many features that make it ideal for many applications. It has an adjustable frequency ranging from 500Hz to 800kHz, peak current limit protection with soft-start, overvoltage protection, and undervoltage lockout. The built-in protection features ensure that the output voltage does not exceed its designed limits and that the design does not experience any harmful electrical effects. It also has an adjustable current limit for increased design flexibility. With the adjustable current limit, the output current can be limited by adjusting a current setting to the desired level. It has over-temperature protection that utilizes external thermal sensing circuitry to adjust the output voltage when the temperature rises above a preset level. The CHL8112A-07CRT is also capable of providing precision dual output voltage regulation with independent control.

Applications

The CHL8112A-07CRT is ideal for many types of portable electronic equipment such as mobile phones, digital cameras, PDAs, MP3 players, and LCD displays. It can be used to provide power to the internal components of the device and regulate the output voltage. It can also be used to provide a regulated low noise, low ripple supply for the display drive circuitry. It is also suitable for any applications that require a highly accurate output voltage regulation such as industrial equipment, medical devices, or home appliances.

Conclusion

The CHL8112A-07CRT is a DC/DC switching controller designed for portable electronic devices. It utilizes a regulated pulse width modulation technique to control the switch for the output voltage regulation. The CHL8112A-07CRT offers three different ways of output voltage regulation, adjustable frequency, peak current limit protection with soft-start, overvoltage and undervoltage protection, over-temperature protection, and adjustable current limit. It is ideal for mobile phones, cameras, portable gaming systems, and other applications requiring accurate and reliable output voltage regulation.

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