Overview
The LMZ12003 SIMPLE SWITCHER® power module, produced by Texas Instruments, is an easy-to-use step-down DC-DC solution designed to drive up to 3-A loads with exceptional power conversion efficiency, line and load regulation, and output accuracy. This module is available in an innovative TO-PMOD (NDW) package with 7 pins, enhancing thermal performance and allowing for both hand and machine soldering. It can accept an input voltage range of 4.5 V to 20 V and deliver an adjustable output voltage as low as 0.8 V. The LMZ12003 requires only three external resistors and four external capacitors to complete the power solution, making it a robust and reliable choice for various applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Package | TO-PMOD (NDW) with 7 pins |
| Operating Temperature Range (°C) | -40 to 125 |
| Maximum Total Power Output | 18 W |
| Output Current | Up to 3 A |
| Input Voltage Range | 4.5 V to 20 V |
| Output Voltage Range | 0.8 V to 6 V |
| Efficiency | Up to 92% |
| Switching Frequency | Up to 1 MHz (adjustable with a single resistor) |
Key Features
- Integrated Shielded Inductor
- Simple PCB Layout
- Flexible Start-up Sequencing Using External Soft-start Capacitor and Precision Enable
- Protection Against Inrush Currents and Faults such as Input UVLO and Output Short Circuit
- Junction Temperature Range 40°C to 125°C
- Single Exposed Pad and Standard Pinout for Easy Mounting and Manufacturing
- Fast Transient Response for FPGAs and ASICs
- Low Output Voltage Ripple
- Pin-to-Pin Compatible With Devices: LMZ14203/2/1, LMZ12003/2/1
- Fully WEBENCH® Power Designer Enabled
- Operates at High Ambient Temperature With No Thermal Derating
- High Efficiency Reduces System Heat Generation
- Low Radiated Emissions (EMI) Tested to EN55022 Class B Standard
- Passes 10-V/m Radiated Immunity EMI Test Standard EN61000 4-3
Applications
The LMZ12003 is suitable for a variety of applications that require high efficiency and reliability in power conversion. These include:
- Power supplies for FPGAs and ASICs due to its fast transient response and low output voltage ripple.
- Industrial control systems where high ambient temperatures and robust protection features are essential.
- Communication equipment that demands low radiated emissions and high efficiency to reduce system heat generation.
- Automotive and aerospace systems where the operating temperature range and robust design are critical.
Q & A
- What is the maximum output current of the LMZ12003?
The LMZ12003 can deliver up to 3 A of output current. - What is the input voltage range for the LMZ12003?
The input voltage range is from 4.5 V to 20 V. - What is the minimum output voltage that the LMZ12003 can provide?
The LMZ12003 can deliver an output voltage as low as 0.8 V. - What are the key protection features of the LMZ12003?
The LMZ12003 includes thermal shutdown, input undervoltage lockout, output overvoltage protection, short circuit protection, and output current limit. - How many external components are required to complete the power solution with the LMZ12003?
The LMZ12003 requires three external resistors and four external capacitors. - Is the LMZ12003 compatible with other devices?
Yes, it is pin-to-pin compatible with devices such as LMZ14203/2/1 and LMZ12003/2/1. - What is the operating temperature range of the LMZ12003?
The operating temperature range is from -40°C to 125°C. - Does the LMZ12003 support high switching frequencies?
Yes, the switching frequency can be adjusted up to 1 MHz using a single resistor. - Is the LMZ12003 designed for high efficiency?
Yes, the LMZ12003 has an efficiency of up to 92% and is designed to reduce system heat generation. - Does the LMZ12003 meet EMI standards?
Yes, it meets EN55022 Class B Standard for low radiated emissions and passes the 10-V/m radiated immunity EMI test standard EN61000 4-3.
