TL4051C12IDCKR Integrated Circuits (ICs)

Noise - 0.1Hz to 10Hz:	--
Base Part Number:	TL4051C12
Supplier Device Package:	SC-70-5
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Cathode:	65µA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	20µVrms
Series:	--
Temperature Coefficient:	50ppm/°C
Tolerance:	±0.5%
Current - Output:	12mA
Voltage - Output (Min/Fixed):	1.225V
Output Type:	Fixed
Reference Type:	Shunt
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TL4051C12IDCKR is a secondary-side voltage reference and system reset chip designed by Texas Instruments. The chip supports a wide range of input voltage ranges and provides a precise 0.6V to 5.5V system reset.

TL4051C12IDCKR Application Field

The TL4051C12IDCKR is designed for secondary-side voltage reference and system reset applications. It is mainly used in systems where multiple power supplies are needed, such as servers, storage, and routers. It can also be used in digital video recorders, digital cameras, smart cards, and other connected devices.By using the TL4051C12IDCKR chip, the output voltage of the voltage regulator will be maintained stable at 0.6V to 5.5V and the system reset time can be accurately maintained. Meanwhile, the chip also provides an over temperature protection (OTP) function, and the over temperature warning temperature can be programmed to ensure the system won’t enter an unstable state due to short-term power or temperature change.

TL4051C12IDCKR Working Principle

The TL4051C12IDCKR chip features a precision secondary-side voltage reference circuit. The chip integrates a 4-level voltage reference bandgap, a voltage reference buffer, a voltage error amplifier, a temperature sensing circuit, and a reset circuit.The chip senses the input voltage and compares it to the internal reference voltage. If there is a change in the input voltage, the chip will adjust the output voltage of the voltage regulator accordingly to maintain the precise voltage for the system. In addition, the chip also has an over temperature protection (OTP) circuitry that can be programmed to provide warning or fault and shut down the system power in case of excessive temperature.The voltage reference buffer circuitry and the voltage error amplifier independently control the voltage reference to ensuring that the output voltage is stable during power up and power down conditions.The temperature sensing circuitry uses an Ntc thermistor to detect the system temperature and compares it to the OTP temperature value. Once the Ntc thermistor senses the temperature has exceeded the OTP temperature, the system will be shut down to protect itself.In summary, the TL4051C12IDCKR is a secondary-side voltage reference and system reset chip that is suitable for servers, storage, routers, digital video recorders, digital cameras, smart cards, and other connected devices. It is a precise and stable chip that provides voltage stability, over temperature protection, and reset signal generation.

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