Overview
The LM2734YMKX is a high-frequency, PWM step-down DC/DC converter produced by Texas Instruments. This monolithic device is packaged in a 6-pin Thin SOT-23 package and is designed to provide local DC/DC conversion with fast transient response and accurate regulation. It operates over a wide input voltage range of 3V to 20V and can output voltages from 0.8V to 18V, making it versatile for various applications. The LM2734YMKX is known for its high power density, achieved through the use of state-of-the-art 0.5-µm BiCMOS technology and an internal 300-mΩ NMOS switch, allowing it to drive 1-A loads efficiently.
Key Specifications
| Parameter | Description |
|---|---|
| Case/Package | SOT-23-6 |
| Mount | Surface Mount |
| Number of Pins | 6 |
| Efficiency | Up to 90% |
| Max Duty Cycle | 96% |
| Max Input Voltage | 20 V |
| Max Junction Temperature (Tj) | 125 °C |
| Max Operating Temperature | 125 °C |
| Max Output Current | 1 A |
| Max Supply Voltage | 20 V |
| Min Input Voltage | 3 V |
| Min Operating Temperature | -40 °C |
| Min Supply Voltage | 3 V |
| Nominal Supply Current | 1.5 mA |
| Number of Outputs | 1 |
| Output Current | 1 A |
| Output Type | Adjustable |
| Output Voltage | Up to 18 V |
| Quiescent Current | 2.1 mA |
| Switching Frequency | 550 kHz (LM2734Y) |
| Synchronous Rectifier | No |
| Height | 1.1 mm |
| Length | 2.9 mm |
| Thickness | 870 µm |
| Width | 1.6 mm |
Key Features
- Thin SOT-6 Package for high power density
- 3-V to 20-V Input Voltage Range and 0.8-V to 18-V Output Voltage Range
- 1-A Output Current with an internal 300-mΩ NMOS switch
- 550-kHz (LM2734Y) and 1.6-MHz (LM2734X) Switching Frequencies
- 0.8-V, 2% Internal Voltage Reference
- Internal Soft Start and Current-Mode, PWM Operation
- Thermal Shutdown and Output Overvoltage Protection
- Ultra-low Shutdown Current of 30 nA
- Pulse-by-Pulse Current Limit
Applications
The LM2734YMKX is suitable for a wide range of applications requiring efficient and compact DC/DC conversion. These include but are not limited to:
- Portable electronics such as smartphones, tablets, and laptops
- Industrial control systems and automation
- Medical devices requiring precise voltage regulation
- Aerospace and defense systems where space and efficiency are critical
- Automotive systems, especially those requiring high-frequency conversion
Q & A
- What is the input voltage range of the LM2734YMKX?
The input voltage range is from 3V to 20V. - What is the maximum output current of the LM2734YMKX?
The maximum output current is 1 A. - What is the package type of the LM2734YMKX?
The package type is SOT-23-6. - What is the switching frequency of the LM2734YMKX?
The switching frequency is 550 kHz for the LM2734Y model. - Does the LM2734YMKX have thermal shutdown protection?
Yes, it includes thermal shutdown protection. - What is the quiescent current of the LM2734YMKX?
The quiescent current is 2.1 mA. - Is the LM2734YMKX RoHS compliant?
Yes, it is RoHS compliant according to EU RoHS 2011/65/EU and 2015/863/EU. - What is the operating temperature range of the LM2734YMKX?
The operating temperature range is from -40°C to 125°C. - Does the LM2734YMKX have an internal soft-start feature?
Yes, it includes an internal soft-start circuitry. - What is the efficiency of the LM2734YMKX?
The efficiency can be up to 90%.
