DS1239S-10

Series:	MicroManager
Packaging:	Tube
Part Status:	Obsolete
Type:	Battery Backup Circuit
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	25 ms Minimum
Voltage - Threshold:	4.37V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	DS1239

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DS1239S-10 PMIC - Supervisors

PMIC (Power Management Integrated Circuits) are electronic components that are responsible for controlling, regulating, monitoring and managing different aspects of power in a device. PMICs are essential in any power system design and they fall into different categories depending on their application field and working principle. One such PMIC is the DS1239S-10 Power Manager, which is part of the PMIC - Supervisors category.The DS1239S-10 is an 8-bit micro-processor to supervise low power applications. It is a low-power supervisor with a single low voltage detect input and two active-low pushing buttons inputs. The device also has two design options available, one with an active-high reset output and one with an active-low reset output. The DS1239S-10 has an operating voltage range from 1.1V to 4.3V, with a quiescent current of 2.5µA typical and an active current of 2.5mA typical.The DS1239S-10 communicates with system microprocessor through an integrated PMBUS interface. The PMBUS is a two-wire protocol that allows for communication between the DS1239S-10 and system microprocessors. The communication interface also enables users to monitor and adjust setting of power management functions in the device.The DS1239S-10 works on two main principles: the Low Voltage Detect (LVD) and the Power-On Reset (POR). The LVD monitors the input voltage and sets an output signal when lower than a specified level. This output signal then triggers other components of power system design, like reset chip or power controllers, to adjust their output conditions. On the other hand, the POR signals the device to start up when the power switch is activated. This allows the device to hold in reset state until the system power is stable and at the prescribed level.The DS1239S-10 is used to supervise systems mainly within the consumer and industrial products, such as mobile phones, digital cameras, access —control systems, traffic control systems and energy meters. The DS1239S-10 is a reliable and low-cost solution to monitor and control the power system in these products.The DS1239S-10 provides a wide range of features for designers to control and monitor the power system, such as active-low pushing buttons inputs, built-in PMbus protocol, programmable reset threshold, brown-out detection and adjustable watchdog timer. The watchdog timer monitors the system and allows the design to take appropriate actions when the system is not responding as expected. Furthermore, DS1239S-10 has on-chip flash memory which can be used to store system parameters and settings.The DS1239S-10 is designed to a small 8-lead USP 8 (3x3mm) package and is available in a temperature range from -40°C to 85°C. The device is also protected against over-temperature, reverse-battery and electro-static discharge.In conclusion, the DS1239S-10 is a low-cost PMIC that can be used in many low power applications within the consumer and industrial product sectors. The device is an excellent choice for designers as it provides an integrated PMbus communication interface, watchdog timer, on-chip flash memory and many other features to monitor and modify the power system in an efficient and low-cost manner.

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