The MIC24055 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC24055 operates over an input supply range of 4.5V to 19V and provides a regulated output of up to 12A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 600kHz.
Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High VIN)/(Low VOUT) operation possible. This adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device.
The MIC24055 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under voltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, foldback current limit, "hiccup mode" short-circuit protection and thermal shutdown. An open-drain power good (PG) pin is provided. Also see the 12A HyperLight Load® part, MIC24056.
Additional Features
Hyper Speed Control™ architecture enables
High delta V operation (VIN = 19V and VOUT = 0.8V)
Small output capacitance
Input voltage range: 4.5V to 19V
Output current up to 12A
Up to 95% efficiency
Adjustable output voltage from 0.8V to 5.5V
±1% feedback accuracy
Any Capacitor™ stable - zero-to-high ESR
600kHz switching frequency
Power Good (PG) output
Foldback current-limit and "hiccup" mode short-circuit protection
Safe start-up into pre-biased loads
-40°C to +125°C junction temperature range
Available in 28-pin 5mm — 6mm QFN package
The MIC24055 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC24055 operates over an input supply range of 4.5V to 19V and provides a regulated output of up to 12A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 600kHz.
Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High VIN)/(Low VOUT) operation possible. This adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device.
The MIC24055 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under voltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, foldback current limit, "hiccup mode" short-circuit protection and thermal shutdown. An open-drain power good (PG) pin is provided. Also see the 12A HyperLight Load® part, MIC24056.
Additional Features
- Hyper Speed Control™ architecture enables
- High delta V operation (VIN = 19V and VOUT = 0.8V)
- Small output capacitance
- Input voltage range: 4.5V to 19V
- Output current up to 12A
- Up to 95% efficiency
- Adjustable output voltage from 0.8V to 5.5V
- ±1% feedback accuracy
- Any Capacitor™ stable - zero-to-high ESR
- 600kHz switching frequency
- Power Good (PG) output
- Foldback current-limit and "hiccup" mode short-circuit protection
- Safe start-up into pre-biased loads
- -40°C to +125°C junction temperature range
- Available in 28-pin 5mm — 6mm QFN package
