AOZ6683CI EZBuckTM 3A Synchronous Buck Regulator General Description Features The AOZ6683CI is a high efficiency, easy to use, 3A
synchronous buck regulator at high switching frequency
for small form factor solution. The AOZ6683CI works
from 4.5V to 18V input voltage range, and provides up to
3A of continuous output current with an output voltage
adjustable down to 0.8V. 4.5V to 18V operating input voltage range The AOZ6683CI comes in an ultra thin TSOT23-6L
package and is rated from -40°C to +125°C junction
temperature range. Output voltage adjustable to 0.8V Synchronous Buck: 110mΩ internal high-side switch and 55mΩ internal low-side switch Up to 95% efficiency Pulse energy mode for high light load efficiency (Vin=12V, Vo=5V, 89% @10mA) 3A continuous output current 750kHz PWM operation Internal compensation Internal Soft Start Cycle-by-cycle current limit Pre-bias start-up Short-circuit protection Thermal shutdown Ultra-thin TSOT23-6L package Applications General Point of Load LCD TV Cable modems and Gateway Typical Application
VIN VIN 4.5V ~ 18V BST CIN CBST L1 AOZ6683CI VOUT LX EN RT EN
GND R1 FB R2 CO Figure 1. 3A Synchronous Buck Regulator Rev. 2.0 January 2019 www.aosmd.com Page 1 of 15 AOZ6683CI
Ordering Information
Part Number Ambient Temperature Range Package Environmental AOZ6683CI -40°C to +125°C TSOT23-6L RoHS AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.
Please visit www.aosmd.com/media/AOSGreenPolicy.pdf for additional information. Pin Configuration
GND 1 6 BST LX 2 5 EN VIN 3 4 FB TSOT23
(Top View) Pin Description
Pin Number Pin Name 1 GND 2 LX Switching node connects to main inductor terminal. 3 VIN Supply voltage input. When VIN rises above the UVLO threshold and EN is logic high, the
device will start up. 4 FB Feedback input. The FB pin is used to set the output voltage through a resistor voltage
divider between the Output and GND. 5 EN Enable input. Pull EN to logic high will enable the device. Pull EN to logic low will disable
the device. EN pin must be connected to VIN if no Enable control is required. 6 BST Bootstrap input. Connect a capacitor to LX (Pin 2). Typical value is 0.1uF. Rev. 2.0 January 2019 Pin Function
System ground. www.aosmd.com Page 2 of 15 AOZ6683CI
Absolute Maximum Ratings Maximum Operating Ratings Exceeding the Absolute Maximum Ratings may damage the
device. The device is not guaranteed to operate beyond the
Maximum Operating ratings. Parameter Rating Supply Voltage (VIN) …
