TPS53321 Series
2.9V to 6V, 5-A Step-Down Converter with Integrated MOSFETs
Manufacturer: Texas Instruments
Catalog(1 parts)
| Part | Topology | Voltage - Input (Max)▲▼ | Package / Case | Mounting Type | Synchronous Rectifier▲▼ | Function | Voltage - Output (Max)▲▼ | Output Type | Operating Temperature▲▼ | Operating Temperature▲▼ | Frequency - Switching▲▼ | Number of Outputs▲▼ | Supplier Device Package | Voltage - Output (Min/Fixed)▲▼ | Current - Output▲▼ | Voltage - Input (Min)▲▼ | Output Configuration |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS53321RGTRBuck Switching Regulator IC Positive Adjustable 0.6V 1 Output 5A 16-VFQFN Exposed Pad | Buck | 6 V | 16-VFQFN Exposed Pad | Surface Mount | Step-Down | 5.039999961853027 V | Adjustable | 85 °C | -40 °C | 1100000 Hz | 1 ul | 16-VQFN (3x3) | 0.6000000238418579 V | 5 A | 2.9000000953674316 V | Positive |
Key Features
• 96% Maximum EfficiencyContinuous 5-A Output CurrentSupports All MLCC Output CapacitorSmoothPWM™ Auto-Skip Eco-Mode™ for Light-Load EfficiencyOptimized Efficiency at Light and Heavy LoadsVoltage Mode ControlSupports Master-Slave Interleaved OperationSynchronization up to ±20% of Nominal FrequencyConversion Voltage Range Between 2.9 V and 6 VSoft-Stop Output Discharge During DisableAdjustable Output Voltage Ranging Between 0.6 V and 0.84 V × VINOvercurrent, Overvoltage, and Overtemperature ProtectionSmall 3 mm × 3 mm, 16-Pin QFN PackageOpen-Drain Power Good IndicationInternal Boot Strap SwitchLow RDS(on), 24 mΩ With 3.3-V Input and 19-mΩ With 5-V InputSupports Prebias Start-Up96% Maximum EfficiencyContinuous 5-A Output CurrentSupports All MLCC Output CapacitorSmoothPWM™ Auto-Skip Eco-Mode™ for Light-Load EfficiencyOptimized Efficiency at Light and Heavy LoadsVoltage Mode ControlSupports Master-Slave Interleaved OperationSynchronization up to ±20% of Nominal FrequencyConversion Voltage Range Between 2.9 V and 6 VSoft-Stop Output Discharge During DisableAdjustable Output Voltage Ranging Between 0.6 V and 0.84 V × VINOvercurrent, Overvoltage, and Overtemperature ProtectionSmall 3 mm × 3 mm, 16-Pin QFN PackageOpen-Drain Power Good IndicationInternal Boot Strap SwitchLow RDS(on), 24 mΩ With 3.3-V Input and 19-mΩ With 5-V InputSupports Prebias Start-Up
Description
AI
The TPS53321 device provides a fully integrated 3-V to 5-V VINintegrated synchronous FET converter solution with 16 total components in 200 mm2of PCB area. Due to the low ON-resistance and TI’s Proprietary SmoothPWM™ skip mode of operation, it enables 96% peak efficiency and over 90% efficiency at loads as light as 100 mA. It requires only two 22-µF ceramic output capacitors for a power dense 5-A solution.
The TPS53321 features a 1.1-MHz switching frequency, skip mode operation support, prebias start-up, internal soft start, output soft discharge, internal VBST switch, power good, EN/input UVLO, overcurrent, overvoltage, undervoltage, and overtemperature protections, and all ceramic output capacitor support. It supports supply voltage from 2.9 V to 3.5 V and conversion voltage from 2.9 V to 6 V. The output voltage is adjustable from 0.6 V to 0.84 V × VIN.
The TPS53321 is available in the 3 mm × 3 mm 16-pin QFN package (Green RoHs compliant and Pb free) and operates between –40°C and 85°C.
The TPS53321 device provides a fully integrated 3-V to 5-V VINintegrated synchronous FET converter solution with 16 total components in 200 mm2of PCB area. Due to the low ON-resistance and TI’s Proprietary SmoothPWM™ skip mode of operation, it enables 96% peak efficiency and over 90% efficiency at loads as light as 100 mA. It requires only two 22-µF ceramic output capacitors for a power dense 5-A solution.
The TPS53321 features a 1.1-MHz switching frequency, skip mode operation support, prebias start-up, internal soft start, output soft discharge, internal VBST switch, power good, EN/input UVLO, overcurrent, overvoltage, undervoltage, and overtemperature protections, and all ceramic output capacitor support. It supports supply voltage from 2.9 V to 3.5 V and conversion voltage from 2.9 V to 6 V. The output voltage is adjustable from 0.6 V to 0.84 V × VIN.
The TPS53321 is available in the 3 mm × 3 mm 16-pin QFN package (Green RoHs compliant and Pb free) and operates between –40°C and 85°C.