Diodes AP62800SJ User Manual

DESCRIPTION
The AP62800 is an 8A, synchronous buck converter with
a wide input voltage range of 4.5V to 17V. The device
fully integrates a 22mΩ high-side power MOSFET and a
10mΩ low-side power MOSFET to provide high-
efficiency step-down DC-DC conversion.
The AP62800 device is easily used by minimizing the
external component count due to its adoption of
Constant On-Time (COT) control to achieve fast
transient response, easy loop stabilization, and low
output voltage ripple.
FEATURES
•
VIN: 4.5V to 17V
•
Output Voltage (VOUT): 0.6V to 7V
•
8A Continuous Output Current
•
0.6V ± 1% Reference Voltage
•
195μA Quiescent Current
•
Selectable Operation Modes
o
Pulse Frequency Modulation (PFM)
o
Ultrasonic Mode (USM)
o
Pulse Width Modulation (PWM)
•
Selectable Switching Frequency
o
400kHz
o
800kHz
o
1.2MHz
APPLICATIONS
•
5V and 12V Input Distributed Power Bus Supplies
•
Television Sets and Monitors
•
White Goods and Small Home Appliances
•
FPGA, DSP, and ASIC Supplies
•
Home Audio
•
Network Systems
•
Gaming Consoles
•
Consumer Electronics
•
General Purpose Point of Load
AP62800SJ User Guide
Issue 1
The AP62800 design is optimized for Electromagnetic
Interference (EMI) reduction. The device has
proprietary gate driver scheme to resist switching node
ringing without sacrificing MOSFET turn-on and turn-off
times, reducing high-frequency radiated EMI noise
caused by MOSFET switching.
The device is available in the V-QFN2030-12 (Type A)
package.
•
Programmable Soft-Start Time
•
Proprietary Gate Driver Design for Best EMI
Reduction
•
Power-Good Indicator
•
Precision Enable Threshold to Adjust UVLO
•
Protection Circuitry
o
Undervoltage Lockout (UVLO)
o
Cycle-by-Cycle Valley Current Limit
o
Thermal Shutdown
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AP62800SJ
EVB User Guide
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a
March 2024