(China (Mainland))
Product Summary
The ADP3421J is a hysteretic dc-dc buck converter controller with two auxiliary linear regulator controllers. The ADP3421 provides a total power conversion control solution for a microprocessor by delivering the core, I/O, and clock voltages. The optimized low-voltage design is powered from the 3.3 V system supply and draws only 10 μA maximum in shutdown. The main output voltage is set by a 5-bit VID code. To accommodate the transition time required by the newest processors for on-thefly VID changes, the ADP3421J features high-speed operation to allow a minimized inductor size that results in the fastest change of current to the output. The applications of the ADP3421J include Geyserville-Enabled Core DC-DC Converters, Fixed Voltage Mobile CPU Core DC-DC Converters, Notebook/Laptop Power Supplies, Programmable Output Power Supplies.
Parametrics
ADP3421J absolute maximum ratings: (1)Input Supply Voltage (VCC): -0.3 V to +7 V; (2)UVLO Input Voltage: -0.3 V to +7 V; (3)All Other Inputs/Outputs: VCC + 0.3 V; (4)Operating Ambient Temperature Range: 0℃ to 100℃; (5)Junction Temperature Range: 0℃ to 150℃; (6)θJA: 98℃/W; (7)Storage Temperature Range: -65℃ to +150℃; (8)Lead Temperature (Soldering, 10 sec.): 300℃.
Features
ADP3421J features: (1)Meets Intel Mobile Voltage Positioning Requirements; (2)Lowest Processor Dissipation for Longest Battery Life; (3)Best Transient Containment; (4)Minimum Number of Output Capacitors; (5)System Power Management Compliant; (6)Fast, Smooth Output Transition During VID Code Change; (7)Programmable Current Limit; (8)Power Good; (9)Integrated LDO Controllers for Clock and I/O Supplies; (10)Programmable UVLO; (11)Soft Start with Restart Lock-In.
Diagrams
