Exar Corp. recently announced the XR77129, a quad output programmable universal PMIC with an input operating voltage range of 6 to 40 V. Its patented control architecture is well suited for 40-V inputs using a 17-bit wide PID voltage mode VIN feed forward architecture. This controller offers a single input, quad output, step-down switching regulator controller with integrated gate drivers and dual LDO outputs. It can also monitor and dynamically control and configure the power system through an I2C interface. Five configurable GPIOs allow for fast system integration for fault reporting and status or for sequencing control.
The XR77129 can be configured to power nearly any FPGA, SoC, or DSP system with the use of Exar’s PowerArchitect and programmed through an I²C-based SMBus compliant serial interface. PowerArchitect 5.2 has been upgraded to support the additional capabilities of the XR77129 including output voltage ranges beyond the native 0.6 to 5.5 V with the use of external feedback resistors. The XR77129 wide input voltage range, low quiescent current of 450 µA (standby) and 4 mA (operating) make it a logical choice for a wide range of systems, including 18 to 36 VDC, 24 VDC or rectified AC systems used in the industrial automation and embedded applications.
The XR77129 is available now in an RoHS-compliant, green/halogen-free, space-saving 7 mm × 7 mm TQFN. It costs $9.95 in 1,000-piece quantities..
Summary of features:
• 6 to 40 V input voltage
• Quad channel step-down controller
• Digital PWM 105 kHz to 1.23 MHz operation
• SMBus-compliant I²C interface
• Supported by PowerArchitect 5.2 or later
Source: Exar
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