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AOZ6643DI
EZBuck™ DC-DC Buck Regulators
The AOZ6643DI is a 18V input, 3A Synchronous buck regulator in a thermally enhanced DFN3x3 package. It has low on resistance for power switches, 80mΩ for High-Side and 30mΩ for Low-Side. It is capable to output power up to 15W. The output voltage is adjustable down to 0.8V and the switching frequency is 500kHz. It features Pulse Energy Mode (PEM) to enable high efficiency in light load conditions.
- Datasheets
- Package
- Tape & Reel
Features
- 4.5V to 18V operating input voltage range
- 80mΩ High Side, 30mΩ High Side
- 3A continuous output current
- Output voltage adjustable down to 0.8V
- Up to 83% efficiency at 10mA load
- Fixed switching frequency at 500kHz
- Cycle-by-cycle current limit
- External compensation for system optimization
- Output pre-bias start up
- Thermal shutdown
- Thermally-enhanced DFN3x3-8L package
Features
- 4.5V to 18V operating input voltage range
- 80mΩ High Side, 30mΩ High Side
- 3A continuous output current
- Output voltage adjustable down to 0.8V
- Up to 83% efficiency at 10mA load
- Fixed switching frequency at 500kHz
- Cycle-by-cycle current limit
- External compensation for system optimization
- Output pre-bias start up
- Thermal shutdown
- Thermally-enhanced DFN3x3-8L package
Documentation
| Title | Type | Date | File |
|---|---|---|---|
| AOZ6643DI Datasheet | Datasheets | 2020-07-13 | |
| DFN3x3B_8L_EP1_P | Package | 2020-05-28 | |
| DFN3x3B_8L_EP1_P Tape & Reel | Tape & Reel | 2024-03-14 |
Parametrics
Status | Full Production |
Min Vin (V) | 4.50 |
Max Vin (V) | 18 |
Max Output I (A) | 3 |
Min VOUT (V) | 0.80 |
Max VOUT (V) | 15 |
Package | DFN3x3-8L |
Control Mode | PWM |
Light Load Mode | No |
Ultrasonic Mode | No |
External Comp | No |
VCC Supply | Internal |
Operating Freq (kHz) | 500 |
Iq (uA) | 550 |
Soft Start (ms) | 4 |
HS FET RDS(ON) (mΩ) | 80 |
LS FET RDS(ON) (mΩ) | 30 |
Max Duty Cycle | 85% |
Adj. I Limit | No |
Remote Sense | No |
Enable | Yes |
PGood | No |
Forced PWM | Yes |
Ripple Reduction | No |
Low Power Mode | No |
Protection | Auto Restart |
Digital Interface | NA |
Output Discharge | No |
Package Details
| Package Name | Dimensions | Package Specifications | Packaging Method |
|---|---|---|---|
| DFN3x3B_8L_EP1_P | 3.0x3.0x0.8 | Tape and Reel |
Tools
- EZBuck Design Tool (xls)