TI LP3907SQ-JXQX/NOPB

The LP3907 device is a versatile, programmable power management unit (PMU) optimized for low-power FPGAs, microprocessors, and DSPs. The device integrates two high-efficiency 1A and 600mA step-down DC/DC converters with dynamic voltage scaling (DVS), two 300mA LDOs, and a 400kHz I2C interface that allows a host controller to access the device's internal control registers. The LP3907 also features a programmable power-on sequence.

The device offers numerous features, including programmable power-on sequencing, communication control (I2C), dynamic voltage scaling, overcurrent protection, power-good indication, synchronous rectification, thermal shutdown, and undervoltage lockout. For light-load applications, this high-efficiency synchronous switching step-down regulator can enter PFM mode, operating at a lower switching frequency and supply current to maintain high efficiency at very light loads.

Step-Down DC/DC Converters (Buck)

• Programmable VOUT: Buck1: 0.8V to 2V at 1A; Buck2: 1V to 3.5V at 600mA
• Up to 96% efficiency
• 2.1MHz PWM switching frequency
• Automatic transition from PWM to PFM mode under light-load conditions
• ±3% output voltage accuracy
• Automatic soft-start

LDOs

• Programmable VOUT up to 3.5V (except JJ11, FX6W, and JX6X options)
• 300mA output current
• 30mV (typical) dropout voltage
• Create custom designs using LP3907 with the WEBENCH Power Designer

• Input voltage range: 2.8V to 5.5V

• FPGA
• DSP core power supply
• Application processors
• Peripheral I/O power
• Hearing aids
• Electronic measuring instruments
• Backup battery-powered devices