High Efficiency Dual Output LDO Regulator with Microcontroller Reset Monitor
The TC1301 Dual Output LDO Regulator is a highly integrated low-dropout linear voltage regulator designed to provide stable and efficient power management for modern electronic systems. This device combines dual LDO outputs with a microcontroller reset monitoring function, making it an ideal power solution for embedded systems, microcontroller-based designs, industrial electronics, and communication equipment.
By integrating two regulated outputs and a reset monitoring function within a single compact device, the TC1301 simplifies system design while reducing the number of external components required. This integration allows engineers to create more compact circuit layouts and improve overall system reliability.
Dual Output Voltage Regulation
The TC1301 provides two independent regulated outputs that can be configured for different voltage levels. The first output (VOUT1) supports adjustable output voltages ranging from 1.5V to 3.3V with up to 300 mA output current, while the second output (VOUT2) supports voltages from 1.5V to 3.3V with up to 150 mA output current.
This dual-output capability enables the device to power multiple components within a system simultaneously. For example, one output can supply power to a microcontroller core while the other output powers peripheral circuits, sensors, or communication modules. This flexibility makes the TC1301 an efficient power management solution for systems that require multiple regulated voltage rails.
Integrated Microcontroller Reset Monitoring
In addition to voltage regulation, the device includes a built-in reset monitor function designed to protect microcontroller systems from unstable power conditions. The reset threshold voltage can be configured within the range of 2.20V to 3.20V, ensuring that the microcontroller operates only when the supply voltage reaches a safe and stable level.
When the input voltage falls below the reset threshold, the reset output is automatically triggered, preventing the microcontroller from executing faulty instructions caused by insufficient power. This feature enhances system reliability and prevents unexpected system behavior during power fluctuations or startup sequences.
Configurable Output and Reset Voltage Options
The TC1301 family offers multiple voltage options for both output voltages and reset thresholds. These configurable options allow designers to select the most appropriate voltage levels based on the specific requirements of their application. The available configurations are summarized in the device selection table provided in the official data sheet.
By offering multiple voltage combinations, the TC1301 supports a wide range of applications, including portable electronics, industrial control systems, IoT devices, and embedded computing platforms.
Low Dropout Voltage for Efficient Operation
One of the key advantages of the TC1301 is its low dropout voltage, which improves overall power efficiency. The typical dropout voltage for the first output is 104 mV at 300 mA, while the second output has a typical dropout voltage of 150 mV at 150 mA.
Low dropout performance allows the regulator to maintain stable output voltage even when the input voltage is only slightly higher than the output voltage. This characteristic is particularly beneficial in battery-powered systems where maximizing energy efficiency is critical.
Ultra-Low Supply Current
The device is designed with low quiescent supply current, typically 116 µA for the TC1301A/B version when both outputs are active. Low supply current helps reduce overall system power consumption, making the device suitable for portable electronics and battery-operated applications.
By minimizing internal power consumption, the TC1301 helps extend battery life while maintaining reliable voltage regulation.
Low Noise Operation
For applications requiring low electrical noise, the device includes a reference bypass input that allows designers to reduce output noise levels further. Low-noise voltage regulation is especially important for sensitive analog circuits, RF systems, data acquisition devices, and precision sensors.
The ability to minimize power supply noise ensures improved signal integrity and stable operation of connected components.
Stable Operation with Ceramic Capacitors
The TC1301 supports stable operation with only a minimum 1 µF ceramic output capacitor for each output. Ceramic capacitors offer several advantages including smaller size, lower equivalent series resistance (ESR), and better high-frequency performance compared to traditional electrolytic capacitors.
Using ceramic capacitors simplifies PCB layout while improving overall reliability and reducing system cost.
Separate RESET Input and Shutdown Control
The device offers additional control flexibility through dedicated input pins. The TC1301A version provides a separate input for RESET detect voltage, allowing precise monitoring of external voltage conditions.
Meanwhile, the TC1301B version features separate shutdown control pins for VOUT1 and VOUT2, enabling designers to independently control each output regulator. This independent shutdown capability allows systems to disable unused power rails, helping reduce energy consumption and extend battery life.
Fast Reset Output Timing
The RESET output signal has a typical duration of 300 milliseconds, providing sufficient time for the microcontroller and connected circuitry to stabilize during power-up or recovery from voltage faults.
This controlled reset timing ensures reliable system initialization and prevents premature startup of sensitive digital circuits.
Power-Saving Shutdown Mode
The TC1301 also includes a power-saving shutdown mode, allowing the regulator outputs to be disabled when not needed. In shutdown mode, the device significantly reduces power consumption, making it ideal for energy-efficient electronic systems.
The device also supports fast wake-up from shutdown, with a typical wake-up time of 5.3 microseconds, enabling rapid system response when power needs to be restored.
Compact Package Options
The TC1301 is available in compact 8-pin DFN and MSOP package options, providing excellent space efficiency for modern electronic designs. These small package formats make the device suitable for compact PCB layouts used in portable electronics, embedded modules, and high-density circuit boards.
Wide Operating Temperature Range
The device supports a wide operating junction temperature range from -40°C to +125°C, allowing reliable operation in harsh industrial environments as well as consumer electronic applications.
In addition, the TC1301 includes built-in overtemperature and overcurrent protection, ensuring safe operation under abnormal conditions and protecting both the regulator and connected components.
Reliable Power Management Solution
Overall, the TC1301 dual output LDO regulator offers a powerful combination of dual voltage regulation, microcontroller reset monitoring, low dropout voltage, and energy-efficient operation. Its integrated design reduces system complexity while improving reliability and performance in modern electronic applications.
As a professional electronic components supplier, we provide high-quality integrated circuits and semiconductor devices to customers worldwide. Our components are widely used by OEM manufacturers, EMS providers, electronics engineers, and industrial system developers.
If you are looking for reliable LDO regulators or other electronic components, please feel free to contact us for detailed specifications, pricing information, and global supply support.
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