| Vin (Min) (V) | 3.5 |
| Vin (Max) (V) | 28 |
| Vout (Min) (V) | 0.8 |
| Vout (Max) (V) | 25 |
| Iout (Max) (A) | 2 |
| Iq (Typ) (uA) | 85 |
| 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-mΩ High-Side MOSFET Supports
up to 2-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 Fold
Back and Thermal Shutdown Protection - Available in 8-Pin SOIC Package
- Supported by WEBENCH Software Tool
(http://www.ti.com/lsds/ti/analog/webench/overview.page)
The TPS54232 is a 28-V, nonsynchronous 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 startup and transient conditions. A cycle-by-cycle current limit scheme, frequency fold back, and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54232 is available in an 8-pin SOIC package.
