The MIC4744 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A current output. The MIC4744 operates at 4MHz. A proprietary internal compensation technique allows a closed loop bandwidth of over 200kHz.
The low on-resistance internal P-Channel MOSFET of the MIC4744 allows efficiencies over 90%, reduces external components count and eliminates the need for an expensive current sense resistor.
The MIC4744 operates from 2.9V to 5.5V input and the output can be adjusted down to 0.6V. The device can operate with a maximum duty cycle of 100% for use in low-dropout conditions.
The MIC4744 is available in ETSSOP-16 packages with junction operating temperature ranging from -40°C to +125°C.
Additional Features
2.9V to 5.5V supply voltage
4MHz PWM mode
2A Dual output
Greater than 90% efficiency
100% maximum duty cycle
Output voltage adjustable down to 0.6V
Ultra-fast transient response
Ultra-small external components Stable with a 0.47µH inductor and a 10µF output capacitor
Fully integrated 2A MOSFET switches
Micro-power shutdown
Thermal shutdown and current limit protection
-40°C to +125°C junction temperature range
The MIC4744 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A current output. The MIC4744 operates at 4MHz. A proprietary internal compensation technique allows a closed loop bandwidth of over 200kHz.
The low on-resistance internal P-Channel MOSFET of the MIC4744 allows efficiencies over 90%, reduces external components count and eliminates the need for an expensive current sense resistor.
The MIC4744 operates from 2.9V to 5.5V input and the output can be adjusted down to 0.6V. The device can operate with a maximum duty cycle of 100% for use in low-dropout conditions.
The MIC4744 is available in ETSSOP-16 packages with junction operating temperature ranging from -40°C to +125°C.
Additional Features
- 2.9V to 5.5V supply voltage
- 4MHz PWM mode
- 2A Dual output
- Greater than 90% efficiency
- 100% maximum duty cycle
- Output voltage adjustable down to 0.6V
- Ultra-fast transient response
- Ultra-small external components Stable with a 0.47µH inductor and a 10µF output capacitor
- Fully integrated 2A MOSFET switches
- Micro-power shutdown
- Thermal shutdown and current limit protection
- -40°C to +125°C junction temperature range
