16A regulated power supply solution based on LTMR4644 module

　Fault protection features include overvoltage, overcurrent and overtemperature protection. The LTM4644 is available in a 9mm × 15mm × 5.01mm BGA package that complies with RoHS standards.

　                                    　Figure 1 LTMR4644 block diagram

　　LTMR4644 Key Features

　　 4-Output Step-Down Regulator μModuleR Each Output 4A

　　Wide input voltage range: 4V~14V

　　2.375V~14V, external bias

　　0.6V~5.5V output voltage

　　4A DC, 5A peak output current per channel

　　Maximum power consumption 5.5W (TA=60℃, 200 LFM, without heat sink)

　　±1.5% total output voltage regulation

　　Current mode control, fast transient response

　　Can be paralleled for higher output current

　　Output voltage tracking

　　Figure 2 LTMR4644 application circuit diagram: 4V~14V input, four 1.2V, 1.5V, 2.5V and 3.3V outputs with tracking

　　Table 1 Main features of the DC1900A demo board

　　Internal temperature sensing diode output

　　External frequency synchronization

　　Overvoltage, current and temperature protection

　　 9mm×15mm×5.01mm BGA package

　　LTMR4644 Applications

　　Multi-track point load adjustment

　　 Applications of FPGA, DSP and ASIC

　　                        Figure 3 Circuit diagram of the demonstration board DC1900A

　　Demo Board DC1900A

　　Demonstration circuit 1900A uses the LTMR4644EY μModuleR regulator, a high performance, high efficiency quad output step-down regulator. The LTM4644EY has an operating input voltage range of 4V to 14V and can provide up to 4A of output current per pole.