Overview
The LM5002SDX/NOPB, produced by Texas Instruments, is a high-voltage switch mode regulator designed to implement efficient high-voltage boost, flyback, SEPIC, and forward converters. This regulator integrates a 75-V N-channel MOSFET with a 0.5-A peak current limit, making it suitable for a wide range of applications. It features current mode control, which provides simple loop compensation and line-voltage feed-forward, and includes various protection mechanisms such as cycle-by-cycle current limiting and thermal shutdown.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Input (Min) | 3.1 | V |
| Voltage - Input (Max) | 75 | V |
| Voltage - Output (Min/Fixed) | 1.26 | V |
| Voltage - Output (Max) | 76 | V |
| Current - Output | 400 | mA |
| Frequency - Switching | 50 kHz ~ 1.5 MHz | Hz |
| Operating Temperature | -40°C ~ 125°C | °C |
| Package / Case | 8-WDFN Exposed Pad, 8-WSON (4x4) | |
| Mounting Type | Surface Mount | |
| Output Type | Adjustable | |
| Topology | Boost, Flyback, Forward Converter, SEPIC |
Key Features
- Integrated 75-V N-channel MOSFET
- Ultra-wide input voltage range from 3.1 V to 75 V
- Integrated high voltage bias regulator
- Adjustable output voltage
- 1.5% output voltage accuracy
- Current mode control with selectable compensation
- Wide bandwidth error amplifier
- Integrated current sensing and limiting
- Integrated slope compensation
- 85% maximum duty cycle limit
- Single resistor oscillator programming
- Oscillator synchronization capability
- Enable and undervoltage lockout (UVLO) pin
- Thermal shutdown with hysteresis
Applications
The LM5002SDX/NOPB is suitable for various applications including:
- DC-DC power supplies for industrial, communications, and automotive applications
- Boost, flyback, SEPIC, and forward converter topologies
Q & A
- What is the input voltage range of the LM5002SDX/NOPB?
The input voltage range is from 3.1 V to 75 V.
- What is the maximum output current of the LM5002SDX/NOPB?
The maximum output current is 400 mA.
- What are the supported topologies for the LM5002SDX/NOPB?
The supported topologies include boost, flyback, forward converter, and SEPIC.
- Does the LM5002SDX/NOPB have built-in thermal protection?
- What is the operating temperature range of the LM5002SDX/NOPB?
The operating temperature range is from -40°C to 125°C.
- Can the output voltage of the LM5002SDX/NOPB be adjusted?
- What is the purpose of the slope compensation in the LM5002SDX/NOPB?
The slope compensation prevents subharmonic oscillation in current mode PWM architectures.
- Does the LM5002SDX/NOPB have cycle-by-cycle current limiting?
- What is the package type of the LM5002SDX/NOPB?
The package types include 8-WDFN Exposed Pad and 8-WSON (4x4).
- Is the LM5002SDX/NOPB RoHS compliant?
