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SCM1212BTA

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Transformer Driver PMIC SOT-23-5

49.00 (excluding 18% GST)

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Description

The SCM1212B-Q is a push-pull power primary side controller integrated with power MOSFET. The chip can work normally under the low input voltage of 3V, and it will not be damaged under the impact of high input voltage of 9V for 1S. There are two drivers inside the chip, which respectively control one flow direction of the current of the primary side winding. Alternately selecting the two drivers can realize the push-pull control of the primary side of the transformer. The driving symmetry of the power MOS inside the chip is high, thereby reducing the bias degree of the push-pull topology.

The chip also integrates three key technologies to improve reliability. The first is the soft-start function, which limits the power tube current to avoid damage to the device due to high current impact at startup, and quantitatively guarantees the startup with capacitive load under CC load mode. The second is to integrate the output over-current and short-circuit protection. On the one hand, the judgment and timing of over-current and short-circuit protection are distinguished to control the short-circuit temperature rise while ensuring the capacitive load. On the other hand, the protection threshold is adjusted according to the input voltage and temperature, so that the protection consistency is good, and it is not affected by input changes and temperature changes; the third is over-temperature protection. When the temperature exceeds the specified range, the chip will automatically enter the sleep state, and it will automatically recover when the temperature drops to the set value again.

Specification

Part Status Active  
Applications Transformer Driver  
Current – Supply 1.5mA  
Voltage – Supply 2.7V ~ 5.5V  
Operating Temperature -40°C ~ 150°C (TJ)  
Mounting Type Surface Mount  
Package / Case SC-74A, SOT-753  
Supplier Device Package SOT-23-5

 

 

Features

Comply with AEC-Q100 standard and adopt automotive grade process
Third-party AEC-Q100 automotive approval (Report number : R202210148135-01E)
With ±3% buffeting function, reduced conduction and radiation EMI
Push-Pull driver controller
2.7-5.5V wide input voltage
Low conduction resistance 200mΩ
Built-in two power NMOS, highly symmetrical quasi-complementary drive
Limited MOSFET’s current when power on
Over-current and short circuit protection
Over temperature protection
Under voltage protection
Increase the dead time under light load

Application

Isolated power supply for CAN, RS485, RS232 and on-board system of controller area network.

Data Sheet

SCM1212BTA Q

Note

Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

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