The MIC33050 is a high efficiency 600mA PWM synchronous buck (step-down) regulator with internal inductor featuring HyperLight Load®, a patent-pending switching scheme that offers best-in-class light load efficiency and transient performance while providing very small external components and low output ripple at all loads. The MIC33050 also has a very low typical quiescent current draw of 20µA and can achieve over 83% efficiency even at 1mA. In contrast to traditional light load schemes, the HyperLight Load® architecture does need not trade off control speed to obtain low standby currents and in doing so, the device only needs a small output capacitor to absorb the load transient as the powered device goes from light load to full load. At higher loads, the MIC33050 provides a constant switching frequency of greater than 4MHz while providing peak efficiencies greater than 93% The MIC33050 is available in fixed output voltage options from 0.72V to 3.3V thereby eliminating external feedback components. The MIC33050 is available in an 12-pin 3mm x 3mm with a operating junction range of -40°C to +125°C.
Additional Features
Input voltage range: 2.7V to 5.5V
Fixed output voltage options from 0.72V to 3.3V
Output current guaranteed up to 600mA
Ultra fast transient response
20µA typical quiescent current
4MHz in PWM in constant current mode
HyperLight Load® mode
No external inductor required
Low voltage output ripple
25mVpp in HyperLight Load®mode
3mV output voltage ripple in full PWM mode
>93% efficiency
>83% at 1mA
Fully integrated MOSFET switches
Micropower shutdown
Thermal shutdown and current limit protection
-40°C to +125°C junction temperature range
The MIC33050 is a high efficiency 600mA PWM synchronous buck (step-down) regulator with internal inductor featuring HyperLight Load®, a patent-pending switching scheme that offers best-in-class light load efficiency and transient performance while providing very small external components and low output ripple at all loads. The MIC33050 also has a very low typical quiescent current draw of 20µA and can achieve over 83% efficiency even at 1mA. In contrast to traditional light load schemes, the HyperLight Load® architecture does need not trade off control speed to obtain low standby currents and in doing so, the device only needs a small output capacitor to absorb the load transient as the powered device goes from light load to full load. At higher loads, the MIC33050 provides a constant switching frequency of greater than 4MHz while providing peak efficiencies greater than 93% The MIC33050 is available in fixed output voltage options from 0.72V to 3.3V thereby eliminating external feedback components. The MIC33050 is available in an 12-pin 3mm x 3mm with a operating junction range of -40°C to +125°C.
Additional Features
- Input voltage range: 2.7V to 5.5V
- Fixed output voltage options from 0.72V to 3.3V
- Output current guaranteed up to 600mA
- Ultra fast transient response
- 20µA typical quiescent current
- 4MHz in PWM in constant current mode
- HyperLight Load® mode
- No external inductor required
- Low voltage output ripple
- 25mVpp in HyperLight Load®mode
- 3mV output voltage ripple in full PWM mode
- >93% efficiency
- >83% at 1mA
- Fully integrated MOSFET switches
- Micropower shutdown
- Thermal shutdown and current limit protection
- -40°C to +125°C junction temperature range
