TPS51117 Series
1.8-V to 28-V, synchronous D-CAP buck contoller with light load efficiency
Manufacturer: Texas Instruments
Catalog(4 parts)
| Part | Synchronous Rectifier▲▼ | Output Phases▲▼ | Function | Output Configuration | Number of Outputs▲▼ | Output Type | Topology | Package / Case | Package / Case▲▼ | Package / Case▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Mounting Type | Supplier Device Package | Clock Sync▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 ul | Step-Down | Positive | 1 ul | Transistor Driver | Buck | 14-TSSOP | 0.004394200164824724 m | 0.004399999976158142 m | 5.5 V | 4.5 V | 85 °C | -40 °C | Surface Mount | 14-TSSOP | |||
Texas Instruments TPS51117RGYRBuck Regulator Positive Output Step-Down DC-DC Controller IC 14-VQFN (3.5x3.5) | 1 ul | Step-Down | Positive | 1 ul | Transistor Driver | Buck | 14-VFQFN Exposed Pad | 5.5 V | 4.5 V | 85 °C | -40 °C | Surface Mount | 14-VQFN (3.5x3.5) | ||||
Texas Instruments TPS51117RGYTG4Buck Regulator Positive Output Step-Down DC-DC Controller IC 14-VQFN (3.5x3.5) | 1 ul | Step-Down | Positive | 1 ul | Transistor Driver | Buck | 14-VFQFN Exposed Pad | 5.5 V | 4.5 V | 85 °C | -40 °C | Surface Mount | 14-VQFN (3.5x3.5) | ||||
1 ul | Step-Down | Positive | 1 ul | Transistor Driver | Buck | 14-TSSOP | 0.004394200164824724 m | 0.004399999976158142 m | 5.5 V | 4.5 V | 85 °C | -40 °C | Surface Mount | 14-TSSOP |
Key Features
• High Efficiency, Low Power Consumption, 4.5-µATypical Shutdown CurrentFixed Frequency Emulated On-Time Control,Adjustable from 100 kHz to 550 kHzD-CAP™ Mode With 100-ns Load Step Response< 1% Initial Reference AccuracyOutput Voltage Range: 0.75 V to 5.5 VWide Input Voltage Range: 1.8 V to 28 VSelectable Auto-Skip/PWM-Only OperationTemperature Compensated (4500 ppm/°C)Low-Side RDS(on)Overcurrent SensingNegative Overcurrent LimitIntegrated Boost DiodeIntegrated OVP/UVP and Thermal ShutdownPowergood SignalInternal 1.2-ms Voltage Soft-StartIntegrated Output Discharge (Soft-Stop)APPLICATIONSNotebook ComputersI/O SuppliesSystem Power SuppliesAll other trademarks are the property of their respective ownersHigh Efficiency, Low Power Consumption, 4.5-µATypical Shutdown CurrentFixed Frequency Emulated On-Time Control,Adjustable from 100 kHz to 550 kHzD-CAP™ Mode With 100-ns Load Step Response< 1% Initial Reference AccuracyOutput Voltage Range: 0.75 V to 5.5 VWide Input Voltage Range: 1.8 V to 28 VSelectable Auto-Skip/PWM-Only OperationTemperature Compensated (4500 ppm/°C)Low-Side RDS(on)Overcurrent SensingNegative Overcurrent LimitIntegrated Boost DiodeIntegrated OVP/UVP and Thermal ShutdownPowergood SignalInternal 1.2-ms Voltage Soft-StartIntegrated Output Discharge (Soft-Stop)APPLICATIONSNotebook ComputersI/O SuppliesSystem Power SuppliesAll other trademarks are the property of their respective owners
Description
AI
The TPS51117 device is a cost-effective, synchronous buck controller for POL voltage regulation in notebook PC applications. The controller is dedicated for the operation of the Adaptive On-Time D-CAP mode. This mode provides ease-of-use, low external component count, and fast transient response. Auto-skip mode for high efficiency down to the milliampere load range, or PWM-only mode for low-noise operation is selectable.
The current-sensing scheme for positive overcurrent and negative overcurrent protection is loss-less low-side RDS(on)sensing plus temperature compensation. The device receives a 5-V (4.5 V to 5.5 V) supply from another regulator such as the TPS51120 or TPS51020. The conversion input can be either VBAT or a 5-V rail, ranging from 1.8 V to 28 V, and the output voltage range is from 0.75 V to 5.5 V.
The TPS51117 is available in a 14-pin VQFN or a 14-pin TSSOP package and is specified from –40°C to 85°C.
The TPS51117 device is a cost-effective, synchronous buck controller for POL voltage regulation in notebook PC applications. The controller is dedicated for the operation of the Adaptive On-Time D-CAP mode. This mode provides ease-of-use, low external component count, and fast transient response. Auto-skip mode for high efficiency down to the milliampere load range, or PWM-only mode for low-noise operation is selectable.
The current-sensing scheme for positive overcurrent and negative overcurrent protection is loss-less low-side RDS(on)sensing plus temperature compensation. The device receives a 5-V (4.5 V to 5.5 V) supply from another regulator such as the TPS51120 or TPS51020. The conversion input can be either VBAT or a 5-V rail, ranging from 1.8 V to 28 V, and the output voltage range is from 0.75 V to 5.5 V.
The TPS51117 is available in a 14-pin VQFN or a 14-pin TSSOP package and is specified from –40°C to 85°C.