| Customization: | Available |
|---|---|
| Conductive Type: | Bipolar Integrated Circuit |
| Integration: | Sc-74A |
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This series of low dropout voltage regulators is designed for portable and battery-powered electronic systems that require stable output voltage, low power consumption, compact package size, and reliable protection features. With low ground current, low dropout voltage, multiple output current options, and a convenient 5-pin SOT-23 package, these regulators provide an efficient power management solution for consumer electronics, embedded control boards, portable instruments, communication products, and other compact electronic devices. They are particularly suitable for applications where long battery life, small PCB size, and dependable voltage regulation are critical.
One of the most important advantages of this regulator family is its low ground current, which helps extend battery operating time. In portable electronics, every microamp of wasted current can affect overall battery life. A regulator with low ground current consumes less power internally, allowing more of the battery energy to be delivered to the load. This makes the device especially useful in handheld products, remote controls, battery-powered sensors, portable medical equipment, and other applications where energy efficiency is a major design priority. By reducing internal consumption, the regulator supports longer standby and operating time in real-world products.
Another key feature is its low dropout voltage. Low dropout performance allows the regulator to maintain a stable output even when the input voltage is only slightly higher than the output voltage. This is highly beneficial in battery-powered systems, since battery voltage gradually decreases during discharge. A low dropout regulator can continue providing the required regulated voltage for a longer portion of the battery discharge curve, helping maximize usable battery capacity. In practical terms, this means longer system runtime and more efficient use of the power source.
This regulator family offers several output current choices, allowing customers to select the most suitable model according to application requirements. Available options include:
50 mA output for the TC1054
100 mA output for the TC1055
150 mA output for the TC1186
These different current versions provide design flexibility across a wide range of applications. Lower-current models are ideal for lightweight loads such as sensors, logic circuits, microcontrollers, and signal-conditioning stages, while the higher-current version can support more demanding circuits such as communication modules, control interfaces, or small displays. By offering several current options within a similar device family, this regulator series gives designers the ability to optimize both performance and cost.
The devices also feature high output voltage accuracy, which is essential for systems that rely on precise and stable supply rails. Many digital and analog circuits require tightly regulated voltage to ensure correct performance, especially in microcontroller systems, wireless modules, memory devices, precision sensors, and portable measurement equipment. High output accuracy helps reduce system instability, avoid voltage-related errors, and improve the overall reliability of the final product. It also simplifies design margins because engineers can trust that the regulator output remains close to its specified target value.
To meet the needs of different circuit platforms, the regulators are available in a range of standard or custom output voltages. Standard voltage options include:
1.8V
2.5V
2.6V
2.7V
2.8V
2.85V
3.0V
3.3V
3.6V
4.0V
5.0V
This wide selection allows the regulator to be used with many different electronic systems, including low-voltage digital logic, 3.3V embedded controllers, 5V legacy circuits, and specialized analog or interface devices. The availability of custom voltages further increases design flexibility, making this family suitable for OEM and tailored application requirements. Whether the customer is designing a standard portable device or a custom industrial module, these output voltage options allow easier system matching.
For improved energy efficiency, the regulator includes a power-saving shutdown mode. In shutdown mode, the regulator can greatly reduce power consumption when the output is not needed. This is especially useful in battery-operated devices that spend long periods in standby or sleep mode. Systems such as wireless sensors, portable meters, remote transmitters, and handheld instruments often operate intermittently, with active periods followed by long idle times. The shutdown function helps minimize wasted energy during those idle periods, extending battery life and supporting more efficient power management.
A particularly valuable feature of this regulator family is the ERROR output, which can be used either as a low-battery detector or as a microcontroller reset generator. This adds significant functional value beyond simple voltage regulation. In low-battery detection mode, the ERROR pin can alert the system when the supply voltage falls below a suitable operating threshold, allowing the host controller to issue warnings, save data, or enter a safe shutdown state. When used as a reset generator, the ERROR output can help ensure proper startup sequencing and prevent the microcontroller from operating under unstable power conditions. This improves system reliability and reduces the need for additional supervisory components.
To protect both the regulator and the load under abnormal conditions, the device includes overcurrent protection and overtemperature protection. Overcurrent protection helps prevent damage when the load current exceeds safe limits, such as during accidental short circuits, startup surges, or output faults. Overtemperature protection helps safeguard the regulator if internal temperature rises excessively due to overload, poor cooling, or high ambient temperature. These protection features improve product safety, enhance long-term reliability, and make the regulator suitable for real-world operating environments where unexpected electrical conditions may occur.
The regulators are housed in a compact 5-pin SOT-23 package, which is widely used in modern electronic manufacturing. This small package size makes the device ideal for space-constrained PCB layouts, especially in portable and miniaturized products. At the same time, SOT-23 is compatible with standard surface-mount assembly processes, helping support efficient automated production. For designers working with compact boards, the small package helps save valuable PCB space while still providing essential power regulation and monitoring functions.
Another important commercial advantage is that these devices serve as pin-compatible upgrades for bipolar regulators. This means customers can often improve power efficiency and modernize existing designs without requiring major PCB changes. In many legacy systems, older bipolar regulators consume more current and offer lower efficiency than newer CMOS or low-ground-current LDO solutions. By using a pin-compatible upgrade, manufacturers can improve battery life, reduce heat, and enhance system performance while minimizing redesign effort. This is particularly attractive for customers maintaining established product families or seeking a simple performance improvement in current designs.
Because of their balanced feature set, these regulators are suitable for a broad range of applications. Typical uses include battery-powered consumer devices, portable medical instruments, handheld meters, wireless communication modules, embedded control boards, portable test equipment, remote sensors, small industrial devices, and microcontroller-based systems. Their combination of low dropout voltage, low internal current consumption, accurate output regulation, shutdown control, and built-in protection makes them especially effective in systems where stable power and energy efficiency must be achieved in a compact design.
Overall, this LDO regulator family provides a practical and highly efficient solution for designers who need long battery life, stable output voltage, compact packaging, flexible output options, and built-in supervisory capability. With output current choices of 50 mA, 100 mA, and 150 mA, plus the additional benefit of an ERROR output for system monitoring, these devices offer more than basic voltage regulation. They help improve total system reliability, reduce external component count, and support both new product development and legacy regulator replacement.
For customers looking for a compact and dependable low dropout regulator for portable electronics and embedded applications, this product family delivers an excellent balance of performance, flexibility, and power efficiency.
Key Features:
Low ground current for longer battery life
Low dropout voltage
Output current options:
50 mA (TC1054)
100 mA (TC1055)
150 mA (TC1186)
High output voltage accuracy
Standard or custom output voltages:
1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, 3.6V, 4.0V, 5.0V
Power-saving shutdown mode
ERROR output usable as:
low-battery detector
microcontroller reset generator
Overcurrent protection
Overtemperature protection
Compact 5-pin SOT-23 package
Pin-compatible upgrade for bipolar regulators
Typical Applications:
Battery-powered electronics
Portable instruments
Microcontroller power supplies
Wireless communication modules
Handheld test equipment
Medical portable devices
Remote monitoring systems
Embedded control products
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