TPS55383 Series
4.5V to 28V Input, Dual 3A Outputs, 300kHz Step-Down Converter with External Compensation
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Output Type | Voltage - Output (Min/Fixed)▲▼ | Number of Outputs▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Mounting Type | Voltage - Input (Min)▲▼ | Voltage - Input (Max)▲▼ | Package / Case▲▼ | Package / Case | Package / Case▲▼ | Output Configuration | Voltage - Output (Max)▲▼ | Frequency - Switching▲▼ | Supplier Device Package | Synchronous Rectifier▲▼ | Function | Current - Output▲▼ | Topology |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS55383PWPBuck Switching Regulator IC Positive Adjustable 0.8V 2 Output 3A 16-PowerTSSOP (0.173", 4.40mm Width) | Adjustable | 0.800000011920929 V | 2 ul | 125 °C | -40 °C | Surface Mount | 4.5 V | 28 V | 0.004399999976158142 m | 16-PowerTSSOP | 0.004394200164824724 m | Positive | 26.600000381469727 V | 310000 Hz | 16-HTSSOP | Step-Down | 3 A | Buck | |
Texas Instruments TPS55383PWPRG4Buck Switching Regulator IC Positive Adjustable 0.8V 2 Output 3A 16-PowerTSSOP (0.173", 4.40mm Width) | Adjustable | 0.800000011920929 V | 2 ul | 125 °C | -40 °C | Surface Mount | 4.5 V | 28 V | 0.004399999976158142 m | 16-PowerTSSOP | 0.004394200164824724 m | Positive | 26.600000381469727 V | 310000 Hz | 16-HTSSOP | Step-Down | 3 A | Buck |
Key Features
• 4.5-V to 28-V Input RangeOutput Voltage 0.8 V to 90% of Input VoltageOutput Current Up to 3 ATwo Fixed Switching Frequency Versions:TPS55383: 300 kHzTPS55386: 600 kHzThree Selectable Levels of Overcurrent Protection (Output 2)0.8-V 1.75% Voltage Reference2.1-ms Internal Soft StartDual PWM Outputs 180° Out-of-PhaseRatiometric or Sequential Startup ModesConfigurable as Dual Output or Two-Channel Single Output Multiphase for 6 amp Capability85-Ω Internal High-Side MOSFETsCurrent Mode Control with External CompensationPulse-by-Pulse Overcurrent ProtectionThermal Shutdown Protection at +148°C16-Pin PowerPAD HTSSOP packageAPPLICATIONSSet Top BoxDigital TVPower for DSPConsumer ElectronicsPowerPAD Is a trademark of Texas Instruments.All other trademarks are the property of their respective ownersPower.4.5-V to 28-V Input RangeOutput Voltage 0.8 V to 90% of Input VoltageOutput Current Up to 3 ATwo Fixed Switching Frequency Versions:TPS55383: 300 kHzTPS55386: 600 kHzThree Selectable Levels of Overcurrent Protection (Output 2)0.8-V 1.75% Voltage Reference2.1-ms Internal Soft StartDual PWM Outputs 180° Out-of-PhaseRatiometric or Sequential Startup ModesConfigurable as Dual Output or Two-Channel Single Output Multiphase for 6 amp Capability85-Ω Internal High-Side MOSFETsCurrent Mode Control with External CompensationPulse-by-Pulse Overcurrent ProtectionThermal Shutdown Protection at +148°C16-Pin PowerPAD HTSSOP packageAPPLICATIONSSet Top BoxDigital TVPower for DSPConsumer ElectronicsPowerPAD Is a trademark of Texas Instruments.All other trademarks are the property of their respective ownersPower.
Description
AI
The TPS55383 and TPS55386 are dual output, non-synchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.
With an internally-determined operating frequency and soft start time, these converters provide many features with a minimum of external components. The outputs of the two error amplifiers are accessible allowing user optimization of the feedback loop under a wide range of output filter characteristics. Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications that do not need the full load capability of both outputs.
The outputs may be enabled independently, or configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputs may be powered from different sources.
The TPS55383 and TPS55386 are dual output, non-synchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.
With an internally-determined operating frequency and soft start time, these converters provide many features with a minimum of external components. The outputs of the two error amplifiers are accessible allowing user optimization of the feedback loop under a wide range of output filter characteristics. Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications that do not need the full load capability of both outputs.
The outputs may be enabled independently, or configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputs may be powered from different sources.