BD46412G-TR

Series:	BD46xxx
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Voltage Detector
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	180 ms Minimum
Voltage - Threshold:	4.1V
Operating Temperature:	-40°C ~ 105°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	5-SSOP
Base Part Number:	BD46

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Introduction

BD46412G-TR is a Supervisors from PMIC (Power Management IC). It is specially designed for chip monitoring, prompting and alarming applications. The IC provides accurate current, voltage, temperature and supply voltage sensing and power conversion capability. It includes a supervisor circuit for protecting ICs, systems such as PLLs, microcontrollers and memory modules, a one-time-programmable (OTP) memory, a multiple voltage regulator, a temperature sensor and more.

Application Field

The BD46412G-TR Supervisors gives a high level of protection to numerous kinds of circuits. It is designed to be used in various power monitoring, detection and generation applications.The chip is most commonly used in data backup and in temperature-based triggering and monitoring applications. It can detect temperature variations between 0°C and 120°C, up to a 0.5°C resolution. It also support multiple voltage regulators, including -4V to +4V, -5V to +5V, +3.3V, -3V and Zero-Drift precision regulators.It can be used as a linear voltage regulator to provide regulate output voltage. The voltage output can be programmed through the on-chip Configuration & Calibration Register. It also provide power alarm function, where in case of over-current, over-temperature or power supply failure, the IC will generate an interrupt signal.The chip also features a one-time-programmable (OTP) EEPROM to used for storing digital information relevant to the chip.

Working Principle

The BD46412G-TR works on the principle of detecting the voltage differences. It senses the input power and sends this information to the embedded logic. The logic then processes the data and generates control signals based on the input.The voltage regulator is used to regulate the output voltage from the chip to the required voltage. The voltage is provided to the chip with its own internal reference voltage. It can act as a linear regulator or a switch-mode regulator, depending on the voltage of the input. The voltage regulator is customizable, with options to set the output current and power alarm thresholds.A temperature sensor is used to monitored the temperature rise of the chip. It senses the temperature difference between the internal temperature of the chip and the ambient temperature. The chip then uses a temperature algorithm to identify when the activation temperature, specification temperature or safety temperature is reached.The on-chip OTP EEPROM is used to store information containing product identification and date codes. This information is used by the chip to identify when components have been replaced, or when the chip needs to take corrective action.The chip also provides fault monitoring. It detects any problems in the system and triggers alarm signals in case of over-current, over-voltage, under-voltage, overheating and other conditions.Overall, the BD46412G-TR is an ideal chip for monitoring and safeguarding applications, with its accurate voltage, current and temperature sensing capability, multiple voltage regulators and OTP memory. It can be used in a wide range of applications where data backup and temperature-based triggering is necessary.

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