AP62300/AP62301/AP62300T 4.2V TO 18V INPUT, 3A LOW IQ SYNCHRONOUS BUCK CONVERTER Description Pin Assignments The AP62300/AP62301/AP62300T is a 3A, synchronous buck converter with a wide input voltage range of 4.2V to 18V. The device fully integrates a 75m high-side power MOSFET and a 45m low- side power MOSFET to provide high-efficiency step-down DC-DC (Top View) conversion. The AP62300/AP62301/AP62300T device is easily used by (Top View) GND 1 6 BST minimizing the external component count due to its adoption of Constant On-Time (COT) control to achieve fast transient response, VIN 1 6 FB easy loop stabilization, and low output voltage ripple. SW 2 5 EN SW 2 5 EN The AP62300/AP62301/AP62300T design is optimized for GND 3 4 BST Electromagnetic Interference (EMI) reduction. The device has a VIN 3 4 FB proprietary gate driver scheme to resist switching node ringing without SOT563 (Standard) sacrificing MOSFET turn-on and turn-off times, which reduces high- frequency radiated EMI noise caused by MOSFET switching. TSOT26 (Standard) AP62300/AP62301 is available in SOT563 (Standard) and TSOT26 (Standard) packages. AP62300T is available in a TSOT26 (Standard) package. Features Applications VIN: 4.2V to 18V 5V and 12V Distributed Power Bus Supplies Output Voltage (VOUT): 0.8V to 7V Flat Screen TV Sets and Monitors 3A Continuous Output Current White Goods and Small Home Appliances 0.8V 1% Reference Voltage (T = +25C) FPGA, DSP, and ASIC Supplies A AP62300 and AP62301 Home Audio 0.763V 1% Reference Voltage (T = +25C) Network Systems A AP62300T Gaming Consoles 155A Low Quiescent Current (Pulse Frequency Modulation) Consumer Electronics 750kHz Switching Frequency (VIN = 12V, VOUT = 5V) General Purpose Point of Load Up to 83% Efficiency at 5mA Light Load Proprietary Gate Driver Design for Best EMI Reduction Protection Circuitry Undervoltage Lockout (UVLO) Cycle-by-Cycle Valley Current Limit Thermal Shutdown Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. AP62300/AP62301/AP62300T Typical Application Circuit INPUT VIN BST C3 L 100nF 3.3H OUTPUT VOUT EN SW 5V AP62300 R1 AP62301 C1 C2 10F FB 2 x 22F AP62300T R2 GND Figure 1. Typical Application Circuit VIN = 12V, VOUT = 5V, L = 3.3H VIN = 12V, VOUT = 3.3V, L = 3.3H 100 90 80 70 60 50 40 30 20 10 0 0.001 0.010 0.100 1.000 10.000 IOUT (A) Figure 2. Efficiency vs. Output Current, AP62300/AP62300T VIN = 12V, VOUT = 5V, L = 3.3H VIN = 12V, VOUT = 3.3V, L = 3.3H 100 90 80 70 60 50 40 30 20 10 0 0.001 0.010 0.100 1.000 10.000 IOUT (A) Figure 3. Efficiency vs. Output Current, AP62301 2 of 23 AP62300/AP62301/AP62300T January 2021 Diodes Incorporated www.diodes.com Document number: DS41958 Rev. 3 - 2 Efficiency (%) Efficiency (%)