peculiarity
Electrical specifications
18W maximum total output power
Up to 3A output current
The input voltage range is 4.5V to 20V
The output voltage range is 0.8V to 6V
Conversion efficiency up to 92%
Key features:
Integrated shielded inductors
Simple PCB layout
Flexible start-up sequencing uses external soft-start capacitance and precision to enable
Fault protection against inrush current and input UVLO, output short circuit, etc
Junction temperature range from -40°C to 125°C
Single exposed pad and standard lead wires for easy installation and fabrication
Fast transient response for FPGAs and ASICs
Low output voltage ripple
Pin-to-pin compatible series:
LMZ14203/2/1 (42V Max 3A, 2A, 1A)
LMZ12003/2/1 (20V max 3A, 2A, 1A)
Enable a full WEBENCH ® power design
Performance benefits
In the ambient temperature is high, there is no heat derating in operation
High efficiency and reduced heat generated by the system
Low electromagnetic radiation (EMI) and meets EN55022 Class B standards
The EMI test standard for pass 10V/M radiated immunity EN61000 4-3
illustrate
The LMZ12003 SIMPLE SWITCHER power module is an easy-to-use step-down DC-DC solution capable of driving loads up to 3A with excellent power conversion efficiency, line and load regulation, and output accuracy. LMZ12003 is an innovative solution that enhances thermal properties and allows for manual or machine welding.
LMZ12003 can accept input voltage rails between 4.5V and 20V and provide adjustable and highly accurate output voltages as low as 0.8V. LMZ12003 only requires three external resistors and four external capacitors to complete the power solution. LMZ12003 is a safe, reliable, and powerful design with the following protection features: thermal shutdown, input undervoltage lockout, output overvoltage protection, short-circuit protection, output current limiting, and allowing entry into pre-biased output start-up. A single resistor regulates switching frequencies up to 1 MHz.
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Point-of-load conversion from 5V and 12V input rails
Time-critical items
Applications with high thermal conductivity requirements where space is limited
Applications of Negative Output Voltages (see AN - 2027)