S-80154CNPF-JLFTFG

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PMIC - Supervisors are responsible for monitoring and maintaining system performance by detecting and responding to potential power failures and providing voltage stabilization solutions when necessary. The S-80154CNPF-JLFTFG is one such device, specifically intended for cell phone applications. This application note will discuss the application field and working principle of this device.

The S-80154CNPF-JLFTFG is a linear supervisor IC with integrated push-pull output stage designed to monitor and control the system supply voltages in cell phones and similar devices. Its supply voltage range is from 2.5V to 5.5V and its operating temperature range is -40℃ to 85℃. It has a fixed reset timeout varying from 1.0s to 2.5s with a constant delay line, and its reset threshold is adjustable over a wide range ofV_IB_/ = 1.4V to 5.5V by a single external resistor. Furthermore, the device has an internal pull-up resistor for a push-pull reset output stage with an active-low output.

Moreover, the S-80154CNPF-JLFTFG also provides a power-OK comparator, which is used to indicate the status of a regulated system voltage. It is triggered by comparing the external input voltage V_IB/ with a voltage reference set by an external resistor network. When the external input voltage falls below the reference voltage, the power-OK comparator trips and sends an inactive-low signal. The power-OK reference voltage can be adjusted using two external resistors.

The S-80154CNPF-JLFTFG offers current source and sink capabilities in its reset and power-OK stages. Its sink current capability is adjustable with two external resistors and its source current is constant at 0.25µA. Furthermore, the S-80154CNPF-JLFTFG has an internal low bias current requirement, allowing it to be safely used in battery-powered systems. This device also has an active reset output, which is triggered when the system power drops below a specified threshold. It has an active-low output voltage level and can draw current up to 5mA. Additionally, the S-80154CNPF-JLFTFG is protected against unwanted reset events via the use of an adjustable parameter.

The S-80154CNPF-JLFTFG is an ideal choice for monitoring system voltages in cell phone applications. Its reset and power-OK comparator stages both have adjustable threshold settings, allowing for a wide range of voltage monitoring and protection. The active reset output can help detect low system voltages and provides current capabilities to direct the system to a safe state in the event of a power failure. Finally, its low bias current requirement will help to conserve energy and reduce battery drain.

In conclusion, the S-80154CNPF-JLFTFG is a versatile and reliable supervisor IC intended for use in cell phone applications. Its adjustable reset and power-OK comparator stages offer a wide range of voltage monitoring and protection, while its active reset output provides current capabilities in the event of a power failure. Furthermore, its low bias current requirement will help to conserve energy and prolong battery life. With all of these features, the S-80154CNPF-JLFTFG is the perfect choice for any demanding application that requires accurate and reliable power management.

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