TPS54239 Series
4.5V to 23V Input, 2-A Synchronous Step-Down Converter with Eco-Mode
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Operating Temperature▲▼ | Operating Temperature▲▼ | Number of Outputs▲▼ | Synchronous Rectifier▲▼ | Voltage - Output (Max)▲▼ | Frequency - Switching▲▼ | Output Configuration | Current - Output▲▼ | Voltage - Input (Min)▲▼ | Output Type | Function | Supplier Device Package | Topology | Voltage - Output (Min/Fixed)▲▼ | Mounting Type | Package / Case▲▼ | Package / Case | Package / Case▲▼ | Voltage - Input (Max)▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS54239DDARBuck Switching Regulator IC Positive Adjustable 0.76V 1 Output 2A 8-PowerSOIC (0.154", 3.90mm Width) | 85 °C | -40 °C | 1 ul | 7 V | 600000 Hz | Positive | 2 A | 4.5 V | Adjustable | Step-Down | 8-SO PowerPad | Buck | 0.7599999904632568 V | Surface Mount | 0.003899999894201755 m | 8-PowerSOIC | 0.003911599982529879 m | 23 V | |
Texas Instruments TPS54239EDDABuck Switching Regulator IC Positive Adjustable 0.76V 1 Output 2A 8-PowerSOIC (0.154", 3.90mm Width) | 85 °C | -40 °C | 1 ul | 7 V | 600000 Hz | Positive | 2 A | 4.5 V | Adjustable | Step-Down | 8-SO PowerPad | Buck | 0.7599999904632568 V | Surface Mount | 0.003899999894201755 m | 8-PowerSOIC | 0.003911599982529879 m | 23 V |
Key Features
• D-CAP2 Mode Enables Fast Transient ResponseLow Output Ripple and Allows Ceramic Output CapacitorWide VINInput Voltage Range: 4.5 V to 23 VOutput Voltage Range: 0.76 V to 7.0 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 140 mΩ (High Side) and 70 mΩ (Low Side)High Efficiency, less than 10 µA at shutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPre-Biased Soft Start600-kHz Switching Frequency (fSW)Cycle By Cycle Over Current LimitAuto-Skip Eco-mode for High Efficiency at Light LoadD-CAP2 Mode Enables Fast Transient ResponseLow Output Ripple and Allows Ceramic Output CapacitorWide VINInput Voltage Range: 4.5 V to 23 VOutput Voltage Range: 0.76 V to 7.0 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 140 mΩ (High Side) and 70 mΩ (Low Side)High Efficiency, less than 10 µA at shutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPre-Biased Soft Start600-kHz Switching Frequency (fSW)Cycle By Cycle Over Current LimitAuto-Skip Eco-mode for High Efficiency at Light Load
Description
AI
The TPS54239E is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54239E enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54239E uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54239 to maintain high efficiency during lighter load conditions. The TPS54239E also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 23-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54239E is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.
The TPS54239E is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54239E enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54239E uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54239 to maintain high efficiency during lighter load conditions. The TPS54239E also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 23-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54239E is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.