The MIC261201 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC261201 operates over an input supply range of 4.5V to 28V 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 MIC261201 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage 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.
Additional Features
Hyper Speed Control™ architecture enables
High delta V operation (VIN = 28V and VOUT = 0.8V)
Small output capacitance
4.5V to 28V voltage input
12A output current capability, up to 95% efficiency
Adjustable output from 0.8V to 5.5V
±1% feedback accuracy
Any Capacitor® stable - zero-to-high ESR
600kHz switching frequency
No external compensation
Power Good (PG) output
Foldback current-limit and "hiccup" mode short-circuit protection
Supports safe startup into a pre-biased load
-40°C to +125°C junction temperature range
The MIC261201 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC261201 operates over an input supply range of 4.5V to 28V 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 MIC261201 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage 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.
Additional Features
- Hyper Speed Control™ architecture enables
- High delta V operation (VIN = 28V and VOUT = 0.8V)
- Small output capacitance
- 4.5V to 28V voltage input
- 12A output current capability, up to 95% efficiency
- Adjustable output from 0.8V to 5.5V
- ±1% feedback accuracy
- Any Capacitor® stable - zero-to-high ESR
- 600kHz switching frequency
- No external compensation
- Power Good (PG) output
- Foldback current-limit and "hiccup" mode short-circuit protection
- Supports safe startup into a pre-biased load
- -40°C to +125°C junction temperature range
