| Vin (Min) (V) | 3.5 |
| Vin (Max) (V) | 28 |
| Vout (Min) (V) | 0.8 |
| Vout (Max) (V) | 25 |
| Iout (Max) (A) | 3.5 |
| Iq (Typ) (uA) | 82 |
| Switching frequency (Min) (kHz) | 1000 |
| Switching frequency (Max) (kHz) | 1000 |
| Features | Enable, Light Load Efficiency, UVLO Adjustable, Soft Start Adjustable |
| Rating | Catalog |
| Regulated outputs (#) | 1 |
| Control mode | Current Mode |
| Duty cycle (Max) (%) | 90 |
- 3.5-V to 28-V input voltage range
- Adjustable output voltage down to 0.8 V
- Integrated 80-m? high-side MOSFET supports up to 3.5-A continuous output current
- High efficiency at light loads with a pulse-skipping Eco-Mode?
- Fixed 1-MHz switching frequency
- Typical 1-μA shutdown quiescent current
- Adjustable slow-start limits inrush currents
- Programmable UVLO threshold
- Overvoltage transient protection
- Cycle-by-Cycle current limit, frequency foldback and thermal shutdown protection
- Available in thermally enhanced 8-Pin SOIC PowerPAD? package
- Supported by WEBENCH? tool (http://www.ti.com/lsds/ti/analog/webench/overview.page)
The TPS54332 is a 28-V, 3.5-A non-synchronous buck converter that integrates a low-RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse-skipping Eco-Mode feature is automatically activated. Furthermore, the 1-μA shutdown supply current allows the device to be used in battery-powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during start-up and transient conditions. A cycle-by-cycle current limit scheme, frequency foldback and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54332 is available in an 8-pin SOIC PowerPAD? package.
