Overview
The LMZ23605TZX/NOPB, produced by Texas Instruments, is a 5-A SIMPLE SWITCHER® power module designed for high-efficiency step-down DC-DC conversion. This module is part of the LMZ23605 series and is known for its ease of use and robust design. It can accept an input voltage range of 6 V to 36 V and deliver an adjustable output voltage as low as 0.8 V. The LMZ23605 is packaged in an innovative NDW package that enhances thermal performance and allows for both hand and machine soldering. This module is particularly suited for space-constrained and high-thermal requirement applications, including point-of-load conversions from 12-V and 24-V input rails.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 6 | - | 36 | V |
| Output Voltage Range | 0.8 | - | 6 | V |
| Output Current | - | - | 5 | A |
| Efficiency | - | up to 92% | - | % |
| Junction Temperature Range | -40 | - | 125 | °C |
| Switching Frequency Range | 650 kHz | 812 kHz | 950 kHz | kHz |
| Thermal Shutdown | - | 165 | - | °C |
| Package Type | - | NDW (7-pin) | - | - |
Key Features
- Integrated shielded inductor for reduced EMI and improved thermal performance.
- Simple PCB layout with minimal external components required (only two resistors and three capacitors).
- Frequency synchronization input (650 kHz to 950 kHz) for synchronizing with external frequency sources.
- Flexible start-up sequencing using external soft-start, tracking, and precision enable.
- Protection features include thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, and output current limit.
- Low component count and low output voltage ripple.
- Uses PCB as heat sink, no airflow required.
- Pin compatible with LMZ22005, LMZ23603, and LMZ22003.
- Fully enabled for WEBENCH® Power Designer.
Applications
- Point-of-load conversions from 12-V and 24-V input rails.
- Space-constrained and high-thermal requirement applications.
- Powering FPGAs and ASICs due to fast transient response.
- Negative output voltage applications.
- Time-critical projects requiring reliable and robust power solutions.
Q & A
- What is the input voltage range of the LMZ23605?
The input voltage range is from 6 V to 36 V.
- What is the maximum output current of the LMZ23605?
The maximum output current is 5 A.
- What is the typical switching frequency of the LMZ23605?
The typical switching frequency is 812 kHz, but it can be synchronized between 650 kHz and 950 kHz.
- What protection features does the LMZ23605 have?
The LMZ23605 includes thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, and output current limit.
- How many external components are required to complete the power solution?
Only two external resistors and three external capacitors are required.
- Is the LMZ23605 suitable for high-thermal requirement applications?
- Can the LMZ23605 be synchronized with an external frequency source?
- What is the junction temperature range of the LMZ23605?
The junction temperature range is from -40°C to +125°C.
- Is the LMZ23605 compatible with other Texas Instruments power modules?
- What design tools are available for the LMZ23605?
The LMZ23605 is fully enabled for WEBENCH® Power Designer.
