ADP2164ACPZ-3.3-R7

ADP2164ACPZ-3.3-R7 is a 4A synchronous step-down dc-to-dc regulator. This regulator uses a current-mode, constant frequency pulse-width modulation control scheme for excellent stability and transient response. The ADP2164 integrates a pair of low-on-resistance P-channel and N-channel internal MOSFETs to maximize efficiency and minimize external component count. The 100% duty cycle operation allows low dropout voltage at 4A output current. The high 1.2MHz PWM switching frequency allows the use of small external components, and the SYNC input enables multiple ICs to synchronize out of phase to reduce ripple and eliminate beat frequencies. It features undervoltage lockout (UVLO), integrated soft start to limit inrush current at startup, overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown. Applications include point-of-load conversion, communications and networking equipment, industrial and instrumentation, consumer electronics.

• 4A continuous output current, input voltage range from 2.7V to 6.5V
• Current mode architecture, precision enable input, power-good output
• Voltage tracking input, integrated soft start, internal compensation
• Starts up into a precharged output, UVLO, OVP, OCP, and thermal shutdown
• Quiescent current is 895µA typ at (No switching, TJ = 25°C)
• Shutdown current is 9µA typ at (VIN = PVIN = 6.5V, EN = GND, TJ = 25°C)
• Switching frequency is 1.2MHz typ at (RT = VIN, TJ = 25°C)
• Output load regulation is 0.05%/A typ at (IO = 0A to 4A, TJ = 25°C)
• FB bias current is 0.1µA max at (TJ = 25°C), 3.3V output voltage
• Operating junction temperature range from -40°C to +125°C, 16-lead LFCSP package

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