peculiarity
Electrical specifications
The maximum total output power is 15W
Up to 3A output current
The input voltage range is 2.95V to 5.5V
The output voltage range is 0.8V to 5V
± 1.63% feedback voltage vs. temperature accuracy
Up to 96% conversion efficiency
Key features
Integrated shielded inductors
Flexible start-up sequencing uses external soft start, tracking, and precision enablement
Protection against inrush currents such as input UVLO and output short-circuit faults
-40 °C to +125 °C junction temperature operating range
Single exposed pad and standard lead wire for easy installation and fabrication
Pin to pin compatible
LMZ10504(4A/20W Max)
LMZ10505(5A/25W Max)
FULLY ENABLED WEBENCH ® POWER SUPPLY DESIGN
Performance benefits
High working environment temperature
High efficiency of up to 96% reduces the heat generated by the system
Low electromagnetic emissions (EMI) in accordance with EN55022 Class B
The low output voltage ripple of 10 mV allows power supply noise sensitive transceivers and signal ICs
Fast transient response of powered FPGAs and ASICs
illustrate
The LMZ10503's SIMPLE SWITCHER ® power module is a complete, easy-to-use dc-to-dc solution capable of driving loads up to 3A with excellent power conversion efficiency, output voltage accuracy, line and load regulation. The LMZ10503 is an innovative solution that enhances thermal performance and allows manual or machine welding.
The LMZ10503 accepts input voltage rails between 2.95V and 5.5V and provides adjustable and highly accurate output voltages down to 0.8V. One MHz fixed frequency PWM switch provides a predictable EMI characteristic. Two external compensation components can be adjusted to set for the fastest response time while allowing the choice of using ceramic and/or electrolytic output capacitors. An externally programmable soft-start capacitor facilitates controlled start-up. The LMZ10503 is a safe, reliable, and powerful solution with lossless cycle-by-cycle peak current limiting for protection against overcurrent or short-circuit faults, thermal shutdown, input undervoltage lockout, and prebias startup.
apply
Point of load conversion from 3.3V and 5V rails
Space-constrained apps
Extreme temperatures / no air movement environment
Noise-sensitive applications (i.e. transceivers, medical)