Overview
The LMZ34002RKGT from Texas Instruments is a 15-W negative output power module designed for a wide range of applications requiring a compact and efficient power solution. This SIMPLE SWITCHER® power module integrates a DC-DC converter, a shielded inductor, and necessary passives into a low-profile QFN package, measuring 9×11×2.8 mm. This integration simplifies the design process by eliminating the need for loop compensation and magnetics selection. The module is suitable for powering ICs and analog circuits that require a negative output voltage.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage (VIN) | 4.5 | 40 | V | |
| Output Voltage (VOUT) | -3 | -17 | V | |
| Output Current (IOUT) | 0 | 2 | A | |
| Switching Frequency (fSW) | 700 | 800 | 900 | kHz |
| Operating Junction Temperature | -40 | 105 | °C | |
| Thermal Resistance (θJA) | 14 | °C/W | ||
| Efficiency (η) | 77-86% | % | ||
| Output Voltage Ripple | 1% | % |
Key Features
- Wide Input Voltage Range: From 4.5 V to 40 V.
- Adjustable Output Voltage: From -3 V to -17 V.
- High Output Current: Up to 2 A.
- 45-V Surge Capability: Enhances robustness against voltage spikes.
- Synchronization to External Clock: Allows synchronization with an external clock signal.
- Adjustable Slow-Start: Enables control over the output voltage rise time.
- Programmable Undervoltage Lockout (UVLO): Customizable UVLO threshold.
- Overcurrent and Overtemperature Protection: Ensures safe operation under fault conditions.
- Compact QFN Package: 9×11×2.8 mm, facilitating compact designs.
- Enhanced Thermal Performance: Junction-to-ambient thermal resistance of 14°C/W.
- Compliance with EN55022 Class B Emissions: Meets regulatory requirements for electromagnetic compatibility.
Applications
- Industrial and Motor Controls: Suitable for powering control circuits in industrial environments.
- Automated Test Equipment: Used in test and measurement equipment requiring stable negative voltages.
- Bipolar Amplifiers in Audio/Video: Ideal for audio and video equipment needing negative supply voltages.
- High Density Power Systems: Applicable in dense power systems where compact and efficient power modules are essential.
Q & A
- What is the input voltage range of the LMZ34002RKGT?
The input voltage range is from 4.5 V to 40 V.
- What is the adjustable output voltage range of the LMZ34002RKGT?
The output voltage can be adjusted from -3 V to -17 V.
- What is the maximum output current of the LMZ34002RKGT?
The maximum output current is up to 2 A.
- Does the LMZ34002RKGT support synchronization with an external clock?
- What is the thermal resistance (θJA) of the LMZ34002RKGT?
The thermal resistance (θJA) is 14°C/W.
- Does the LMZ34002RKGT have overcurrent and overtemperature protection?
- What are the typical applications of the LMZ34002RKGT?
- What is the package type and dimensions of the LMZ34002RKGT?
- Does the LMZ34002RKGT meet any specific regulatory standards for emissions?
- How can the slow-start time be adjusted in the LMZ34002RKGT?
