NJU7600M

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NJU7600M is a DC/DC switching regulator controller IC dedicated for use in portable battery-driven systems. It requires voltage input of 2.6V~5.5V. With its extremely low operating current, it provides excellent electrical efficiency even at light loads. Its full-chip low power scheme design reduce power consumption and ensures stable startup of the regulator in heavy load environments. NJU7600M contain various built-in protections like over current protection, over temperature protection, over voltage protection and timed protection. All these protections make NJU7600M a very reliable controller IC.

NJU7600M is mainly used in portable battery-driven systems for applications like power management for consumer products, home appliances and other portable devices. It is used to control the DC/DC switch regulator output, and generate the regulated output voltage. NJU7600M features an in-rush-current control as well as programmable current limiting and thermal shutdown protect the load. It also features a pre–chargefunction for reducing V OUT rise time. The output voltage of this IC can be adjusted to any level within its range by controlling the feedback voltage.

The working principle of NJU7600M is based on the switching regulator feedback control systems. It consists of two basic parts: power stage and feedback control. The feedback control section of this device consists of a voltage feedback amplifier, which senses the output voltage of the DC/DC switch regulator and compares it with a reference voltage. If the output voltage rises above or falls below the reference voltage, the feedback amplifier output current turns on or off the power stage.

NJU7600M also contain a slew rate control circuit, which is used to limit the minimum output voltage change during the mode transition, so that a linear voltage is maintained while switching between different mode. During normal operation, NJU7600M enters the fixed output voltage mode and if the load conditions become heavy, the PGOOD signal is inactive and NJU7600M enters the maximum voltage mode.

In conclusion, NJU7600M is a very reliable DC/DC switching regulator controller IC used in portable battery-driven systems for applications like power management for consumer products, home appliances and other portable devices. It features a slew rate control circuit, in-rush current control, programmable current limiting and thermal shutdown protection to ensure smooth and stable output voltage throughout the system.

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