Product Summary

The TPS54231DR is a 28-V, 2-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 mA shutdown supply current allows the TPS54231DR 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 under-voltage 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 TPS54231DR is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.

Parametrics

TPS54231DR absolute maximum ratings: (1)Electrostatic Discharge (HBM): 2 kV; (2)Electrostatic Discharge (CDM): 500 V; (3)Operating Junction Temperature: –40 to 150 °C; (4)Storage Temperature: –65 to 150 °C; (5)Input Voltage VIN –0.3 to 30V; (6)Output Voltage BOOT-PH: 8V; (7)Source Current EN: 100 μA ; (8)Sink Current VIN: 6 A.

Features

TPS54231DR features: (1) 3.5V to 28V Input Voltage Range; (2) Adjustable Output Voltage Down to 0.8V; (3) Integrated 80 mΩ High Side MOSFET Supports up to 2A Continuous Output Current; (4) Fixed 570kHz Switching Frequency ; (5) Typical 1mA Shutdown Quiescent Current ; (6) Adjustable Slow Start Limits Inrush Currents ; (7) Programmable UVLO Threshold ; (8) Overvoltage Transient Protection ; (9) Available in Easy-to-Use SOIC8 Package.

Diagrams

TPS54231DR pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
TPS54231DR
TPS54231DR
Texas Instruments
DC/DC Switching Regulators 28V,2A Current Mode Nonsynch Buck
Data Sheet
0-1: $2.16
1-25: $1.74
25-100: $1.54
100-250: $1.37
TPS54231DRG4
TPS54231DRG4
Texas Instruments
DC/DC Switching Regulators 28V,2A Crnt Mode Non Synch Buck
Data Sheet
0-1850: $1.01
1850-2000: $0.98
2000-2500: $0.98
2500-5000: $0.94