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TD1507TR
TD1507TR is an asynchronous PWM step‑down power regulator in TO‑252‑5 SMD package. It supports 3.6V‑45V DC input, adjustable output from 1.23V to 43V and can drive load current up to 3A at fixed 150kHz switching frequency.
Internal frequency compensation greatly reduces external component quantity, only four peripheral parts are required. TTL‑compatible shutdown pin implements enable control, typical standby current reaches 80μA for low‑power requirement. Built‑in cycle‑by‑cycle current limit and thermal shutdown protect chip from overload and over‑temperature damage.
Main usages include industrial on‑board power, LCD device auxiliary power, battery charger and general‑purpose step‑down modules. Proper thermal copper layout and correct selection of inductor and freewheeling diode should be followed in hardware design. Datasheet PDF is available for download.
1. High Current Output & Wide Voltage Conversion Range
The TD1507TR is a high-performance 150kHz fixed-frequency PWM buck DC-DC converter, supporting a maximum 3A continuous output current. It features an ultra-wide input voltage range of 4.5V to 36V and adjustable output voltage from 1.23V to 34V. It achieves excellent line and load regulation, delivering stable and precise step-down voltage conversion for various industrial and consumer power systems.
2. Ultra-Low Power Consumption & High Conversion Efficiency
Equipped with low-power standby mode, the TD1507TR only consumes 70μA typical quiescent current, effectively reducing system no-load power loss. Adopting professional PWM switching control technology, it maintains high conversion efficiency under full-load and light-load conditions. The low power loss design perfectly meets energy-saving requirements for long-term operating electronic equipment.
3. Simplified Peripheral Design & Easy Mass Production
This step-down regulator requires only 4 external components, greatly simplifying PCB layout and reducing BOM cost. Built-in frequency compensation and fixed oscillator circuits eliminate complex debugging procedures. The standard SMD TO-252-5L package supports automatic SMT welding, suitable for large-scale mass production and quick product iteration.
4. Multiple Built-In Safety Protection Mechanisms
The TD1507TR integrates complete industrial-grade protection functions, including over-current limit protection and thermal shutdown protection. It effectively prevents chip damage caused by overload, short circuit and over-temperature operation. With reliable fault self-protection capability, it significantly improves power supply stability and extends the service life of terminal electronic products.
5. TTL Shutdown Function & Strong Compatibility
Supporting TTL-level enable shutdown control, the chip realizes flexible power on/off management for intelligent power systems. It adapts to various voltage transformation scenarios such as battery power supply, industrial step-down modules and LCD device power units. Its strong compatibility makes it a universal and cost-effective DC-DC power solution
Technical Specifications of TD1507TR High Efficiency 3A PWM Buck DC-DC Converter
Item | Specifications |
|---|---|
Part Number | TD1507TR |
Device Type | PWM Buck Step-Down DC-DC Converter |
Switching Frequency | 150kHz Fixed Frequency |
Maximum Output Current | 3A Continuous Current |
Input Voltage Range | 4.5V ~ 36V |
Output Voltage Range | 1.23V ~ 34V Adjustable |
Quiescent Current | 70μA (Typical Standby Current) |
Control Interface | TTL Shutdown Enable Function |
Protection Mechanism | Cycle-by-Cycle Current Limit, Thermal Shutdown Protection |
Regulation Performance | Excellent Line & Load Regulation |
Mounting Type | Surface Mount |
Package / Case | TO-252-5L |
Operating Temperature | -40℃ ~ +85℃ |
Application Advantage | Only 4 External Components Required, High Efficiency |
Industrial Applications of the TD1507TR High Efficiency 3A PWM Buck DC-DC Converter
1. Industrial Equipment Step-Down Power Module
The TD1507TR supports 4.5V–36V wide voltage input and 3A large current output, perfectly matching industrial control voltage conversion demands. It provides stable step-down power supply for PLC modules, sensor equipment and industrial automation terminals, ensuring reliable operation under complex voltage fluctuation conditions.
2. LCD Display & Television Power System
Widely used in LCD monitors, LCD TVs and PDP TV auxiliary power circuits. With high conversion efficiency and ultra-low standby power consumption, it effectively reduces equipment heat generation and meets long-term stable power supply requirements for display equipment.
3. Battery Charger & Portable Power Equipment
This high-current buck converter is suitable for intelligent battery charger modules and portable electronic power management systems. Its precise voltage regulation and over-current protection improve charging stability and effectively avoid battery damage caused by current surge and voltage jitter.
4. Consumer Electronic Mainboard Power Supply
Applied in DVD recorders, set-top boxes and daily household electronic devices. Featuring simplified peripheral circuits and low power consumption, it reduces product cost while improving power supply efficiency, ideal for mass production of consumer electronic products.
5. Intelligent Embedded System Power Regulation
Suitable for various embedded single-board computers, MCU control boards and intelligent device power transformation circuits. The TTL shutdown function realizes intelligent power management, helping equipment achieve low-power standby and energy-saving operation.
