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LM2734 3V TO 20V INPUT, 1A STEP-
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HerstellerNational Semiconductor
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Herstellerteil #LM2734YMK/NOPB
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Datenblatt LM2734YMK/NOPB DataSheet
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Paket SOT-23
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Auf Lager5617
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Spezifikationen
| Attribut | Wert |
| Package / Case | Bulk |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3V |
| Voltage - Input (Max) | 20V |
| Voltage - Output (Min/Fixed) | 0.8V |
| Voltage - Output (Max) | 18V |
| Current - Output | 1A |
| Frequency - Switching | 550kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
Übersicht
Description
Key features include internal compensation, which reduces the need for external components, and a low-ripple pulse-width modulation (PWM) control for stable output power. The device also offers protection features such as thermal shutdown and cycle-by-cycle current limiting. Its small SOT-23 package makes it ideal for space-constrained designs.
The LM2734YMK/NOPB is valued for its combination of high efficiency, compact size, and robust performance, making it a popular choice for engineers designing power supplies where size and efficiency are critical.
Equivalent
Features
1. Input Voltage Range: Operates at a wide input voltage range from 3.0V to 20V, supporting various power sources.
2. Output Current: Capable of delivering up to 1A of continuous output current.
3. Adjustable Output Voltage: The output voltage is adjustable, allowing for flexibility in different applications.
4. High Efficiency: Offers high efficiency with low standby current, enhancing battery life in portable devices.
5. Switching Frequency: Features a high switching frequency of approximately 550 kHz, enabling the use of smaller external components.
6. Thermal Shutdown and Current Limit Protection: Includes built-in protections to safeguard against overheating and overcurrent conditions.
7. Small Package: Available in a small 6-pin SOT-23 package, suitable for space-constrained designs.
8. Soft Start Feature: Provides a controlled ramp-up of the output voltage to minimize inrush current.
9. Low Output Ripple: Designed to minimize output voltage ripple, improving overall system performance.
These features make the LM2734YMK/NOPB suitable for applications such as portable devices, battery-powered equipment, and distributed power systems.
Pinout
1. SW (Pin 1): Switch Pin. Connect this pin to the inductor and the diode. It is the switch node where the inductor is connected.
2. GND (Pin 2): Ground. This is the ground reference for the device and all external components.
3. FB (Pin 3): Feedback. This pin is used to set the output voltage through a resistive divider network.
4. EN (Pin 4): Enable. This pin is used to enable or disable the device. A high level on this pin turns the device on, while a low level turns it off.
5. VIN (Pin 5): Input Voltage. Connect this pin to the input supply voltage.
These functions allow the LM2734 to efficiently regulate output voltage, making it suitable for battery-powered and other applications needing voltage boosting.
Manufacturer
Application
1. Point-of-Load Regulation: Suitable for powering processors, FPGAs, and ASICs.
2. Consumer Electronics: Used in smartphones, tablets, and portable devices for battery management.
3. Industrial Electronics: Provides precise power delivery in control systems and sensors.
4. Telecommunications: Powers networking equipment and base stations.
5. Automotive Systems: Utilized in infotainment systems and electronic control units (ECUs).
6. Computing: Offers efficient power solutions for laptops and small form factor PCs.
Its small size and high efficiency make it versatile for various power management applications.