The ADP3422 is a hysteretic dc-dc buck converter controller to power a mobile processor's core. The optimized low voltage design is powered from the 3.3 V system supply. The output voltage is set by a 5-bit VID code. To accommodate the transition time required by the newest processors for on-the-fly VID changes, the ADP3422 features high-speed operation to allow a minimized inductor size that results in the fastest change of current to the output. To further allow for the minimum number of output capacitors to be used, the ADP3422 features active voltage positioning that can be optimally compensated to ensure a superior load transient response. The output signal interfaces with the ADP3415 MOSFET driver that is optimized for high speed and high efficiency for driving both the upper and lower (synchronous) MOSFETs of the buck converter.
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· IMVP-II Enabled Core DC/DC Converters· Fixed-Voltage Mobile CPU Core DC/DC Converters· Notebook/Laptop Power Supplies· Programmable Output Power Supplies
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· Certified IMVP-II Controller· Excellent Transient Containment· Minimum Number of Output Capacitors· Fast, Smooth, Output Transition During VID Code Change· Current Limit with Hiccup Protection· Transient-Glitch-Free Power Good· Low Shutdown Current· Soft Start Eliminates In-Rush Current Surge· Adaptive Noise-Blanking Enhancement for Speed and Stability· Highly Redundant Over-Voltage and Reverse-Voltage Protection· Controls Synchronous Rectifier for Improved Battery Life
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Input Supply Voltage (VCC) . . . . . . . . . . . . . . 0.3 V to +7 V
UVLO Input Voltage . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
All Other Inputs/Outputs . . . . . . . . . 0.3 V to (VCC + 0.3 V)
Operating Ambient Temperature Range . . . . .. 0°C to 85°C
Junction Temperature Range . . . . . . . . . . . . . 0°C to 150°C
JA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98°C/W
Storage Temperature Range . . . . . . . . . 65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . 300°C
*This is a stress rating only; operation beyond these limits can cause the device to be permanently damaged
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Required Field 
