Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Not For New Designs |
| Function | Step-Up |
| OutputConfiguration | Positive |
| Topology | Boost |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 2.7V |
| Voltage-Input(Max) | 14V |
| Voltage-Output(Min/Fixed) | 2.7V |
| Voltage-Output(Max) | 40V (Switch) |
| Current-Output | 1A (Switch) |
| Frequency-Switching | 600kHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | SC-74A, SOT-753 |
Overview
Description
The LM2733YMF is a high-efficiency, step-up DC-DC converter designed by Texas Instruments. It is primarily used to boost low voltage inputs to higher voltage outputs, making it ideal for battery-operated devices and portable applications. The device operates at a 1.6 MHz switching frequency, allowing it to use small, low-cost inductors and capacitors. This frequency also helps in minimizing output voltage ripple and reducing electromagnetic interference (EMI).
The LM2733YMF features an internal N-channel MOSFET switch, which enhances its efficiency and reliability. It can deliver up to 1.6A of switch current, supporting output voltages up to 40V. The converter supports input voltages ranging from 2.7V to 14V, making it versatile for various power sources. It includes an internal compensation feature that simplifies the design process by eliminating the need for external compensation components.
Key attributes of the LM2733YMF include its small SOT-23 package, thermal shutdown protection, cycle-by-cycle current limit, and a low feedback voltage reference, which improves efficiency across a wide load range. Its compact design and efficient performance make it suitable for a variety of power conversion applications.
The LM2733YMF features an internal N-channel MOSFET switch, which enhances its efficiency and reliability. It can deliver up to 1.6A of switch current, supporting output voltages up to 40V. The converter supports input voltages ranging from 2.7V to 14V, making it versatile for various power sources. It includes an internal compensation feature that simplifies the design process by eliminating the need for external compensation components.
Key attributes of the LM2733YMF include its small SOT-23 package, thermal shutdown protection, cycle-by-cycle current limit, and a low feedback voltage reference, which improves efficiency across a wide load range. Its compact design and efficient performance make it suitable for a variety of power conversion applications.
Equivalent
The LM2733YMF is a step-up DC-DC converter from Texas Instruments. Equivalent products may include the following:
1. MIC2288 from Microchip Technology – A boost regulator with similar specifications.
2. LT1615 from Analog Devices (Linear Technology) – Offers similar functionality.
3. MAX1703 from Maxim Integrated – Another boost converter with comparable features.
Always check the specifications and application requirements to ensure compatibility with your design.
1. MIC2288 from Microchip Technology – A boost regulator with similar specifications.
2. LT1615 from Analog Devices (Linear Technology) – Offers similar functionality.
3. MAX1703 from Maxim Integrated – Another boost converter with comparable features.
Always check the specifications and application requirements to ensure compatibility with your design.
Features
The LM2733YMF is a high-frequency, step-up DC-DC converter. Key features include:
1. Wide Input Voltage Range: Operates from 2.7V to 14V, accommodating various power sources.
2. High Efficiency: Capable of achieving efficiency levels up to 85% for reduced power loss.
3. Fixed Frequency Operation: Operates at a switching frequency of 1.6 MHz, which allows the use of small inductors and capacitors.
4. Compact Package: Available in a small SOT-23 package, suitable for space-constrained applications.
5. Output Voltage: Configurable to output a voltage level higher than the input voltage.
6. Current Mode Control: Provides stable operation and fast transient response.
7. Built-in Protection: Includes features like cycle-by-cycle current limiting and thermal shutdown to prevent damage.
8. Start-up Current: Low start-up current helps in extending battery life.
9. Soft Start Capability: Reduces inrush current during start-up, minimizing stress on components.
These features make the LM2733YMF suitable for applications requiring efficient power conversion in compact sizes, such as portable devices and battery-powered equipment.
1. Wide Input Voltage Range: Operates from 2.7V to 14V, accommodating various power sources.
2. High Efficiency: Capable of achieving efficiency levels up to 85% for reduced power loss.
3. Fixed Frequency Operation: Operates at a switching frequency of 1.6 MHz, which allows the use of small inductors and capacitors.
4. Compact Package: Available in a small SOT-23 package, suitable for space-constrained applications.
5. Output Voltage: Configurable to output a voltage level higher than the input voltage.
6. Current Mode Control: Provides stable operation and fast transient response.
7. Built-in Protection: Includes features like cycle-by-cycle current limiting and thermal shutdown to prevent damage.
8. Start-up Current: Low start-up current helps in extending battery life.
9. Soft Start Capability: Reduces inrush current during start-up, minimizing stress on components.
These features make the LM2733YMF suitable for applications requiring efficient power conversion in compact sizes, such as portable devices and battery-powered equipment.
Pinout
The LM2733YMF is a simple switcher DC-DC boost converter. It typically comes in a 6-pin SOT-23 package. Here is a brief description of each pin and its function:
1. SW (Switch Pin): This is the switch output and is connected to the inductor and diode.
2. GND (Ground Pin): This pin is connected to the ground of the circuit.
3. FB (Feedback Pin): This pin is used to set the output voltage via a feedback resistor network.
4. SHDN (Shutdown Pin): This pin is used to enable or disable the device. Pulling this pin low will put the device into shutdown mode.
5. VIN (Input Voltage Pin): This pin is where the input voltage is supplied to the converter.
6. NC (No Connect/Not Connected): This pin is typically not connected to the internal circuitry and is used for mechanical stability.
These pins allow the LM2733YMF to efficiently boost low input voltages to higher output voltages suitable for various applications.
1. SW (Switch Pin): This is the switch output and is connected to the inductor and diode.
2. GND (Ground Pin): This pin is connected to the ground of the circuit.
3. FB (Feedback Pin): This pin is used to set the output voltage via a feedback resistor network.
4. SHDN (Shutdown Pin): This pin is used to enable or disable the device. Pulling this pin low will put the device into shutdown mode.
5. VIN (Input Voltage Pin): This pin is where the input voltage is supplied to the converter.
6. NC (No Connect/Not Connected): This pin is typically not connected to the internal circuitry and is used for mechanical stability.
These pins allow the LM2733YMF to efficiently boost low input voltages to higher output voltages suitable for various applications.
Manufacturer
The LM2733YMF is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components and integrated circuits. The company is known for its innovation in analog and embedded processing, serving various industries such as automotive, industrial, consumer electronics, communications, and enterprise systems. TI focuses on creating solutions that make electronics more energy-efficient, reliable, and affordable. As a leader in the semiconductor industry, Texas Instruments continues to contribute significantly to technological advancements worldwide.
Application
The LM2733YMF is a high-frequency boost converter primarily used in applications requiring efficient power conversion from lower to higher voltage levels. Key application areas include:
1. Portable Electronics: Provides power boosts for battery-powered devices like smartphones, tablets, and cameras.
2. LCD Bias Supply: Supplies bias voltages for LCD panels in devices such as monitors and televisions.
3. LED Drivers: Powers LED backlighting in displays and general-purpose LED lighting solutions.
4. Backup Power Supplies: Offers voltage conversion in backup systems and UPS (Uninterruptible Power Supply).
5. Wireless Communication Devices: Assists in power management for RF and wireless communication systems.
These applications benefit from the LM2733YMF's efficiency, small footprint, and low external component count.
1. Portable Electronics: Provides power boosts for battery-powered devices like smartphones, tablets, and cameras.
2. LCD Bias Supply: Supplies bias voltages for LCD panels in devices such as monitors and televisions.
3. LED Drivers: Powers LED backlighting in displays and general-purpose LED lighting solutions.
4. Backup Power Supplies: Offers voltage conversion in backup systems and UPS (Uninterruptible Power Supply).
5. Wireless Communication Devices: Assists in power management for RF and wireless communication systems.
These applications benefit from the LM2733YMF's efficiency, small footprint, and low external component count.
Package
The LM2733YMF is a step-up DC-DC converter typically available in a SOT-23-5 package. This small-outline transistor package helps in minimizing space in electronic designs, making it suitable for compact applications.
