| Power Supply (Min) (V) |
2.5 |
| Power Supply (Max) (V) |
5.5 |
| IQ (μA) |
35 |
| Load Current (Max) (A) |
3 |
| Vout (Min) (V) |
0.6 |
| Vout (Max) (V) |
5.5 |
| Control Interface |
GPIO |
| EMI Optimization |
NO |
| Temperature |
-40℃~85℃ |
| Special Function |
PWM Mode
PSM Mode
Power Good
Bypass Mode |
| Package (mm) |
SOT563-6L |
Up to 95% Efficiency
2.5V to 5.5V Input Voltage Range
Adjustable Output Voltage from 0.6 V to VIN
Low RDS(ON) Switches 50 mΩ / 30 mΩ
1.5MHz Typical Switching Frequency
3A Maximum Output Current
Low Dropout With 100% Duty Cycle
Power Save Mode for Light Load Efficiency
35μA Operating Quiescent Current
Power Good Output
Over Current Protection
Over Temperature Protection
Internal Soft Startup
Available in FCSOT563-6L and FCDFN 1.6×1.2-6L Package
The AW3743X is a synchronous step-down buck DC-DC converter with high efficiency and low power consumption. The device integrates switches capable of delivering an output current up to 3 A.
The device operates at typically 1.5 MHz frequency pulse width modulation (PWM) at medium to heavy load currents. At light load, the device automatically converts to power save mode (PSM) to maintain high efficiency over the entire load current range. In shutdown, the current consumption less than 2 μA.
The AW3743X provides an adjustable output voltage via an external resistor divider. It has internal soft start circuit to limit the inrush current during startup. Other features like over current protection, over temperature protection and power good are built-in. The device is available in FCSOT563-6L and FCDFN 1.6×1.2-6L package.
The AW3743X has two part numbers.The AW37431 can work in buck mode and bypass mode, the AW37430 can only work in buck mode.
