TPS627431 Series
2V-5.5V input, ultra-low-power 300mA to 400mA step-down buck DCDC converter with 360nA Iq
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Voltage - Input (Max)▲▼ | Function | Voltage - Output (Max)▲▼ | Output Configuration | Output Type | Operating Temperature▲▼ | Operating Temperature▲▼ | Frequency - Switching▲▼ | Synchronous Rectifier▲▼ | Number of Outputs▲▼ | Package / Case | Voltage - Output (Min/Fixed)▲▼ | Supplier Device Package | Current - Output▲▼ | Topology | Mounting Type | Voltage - Input (Min)▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS627431YFPTBuck Switching Regulator IC Positive Programmable 1.3V 1 Output 400mA 8-XFBGA, DSBGA | 5.5 V | Step-Down | 3.0999999046325684 V | Positive | Programmable | 125 °C | -40 °C | 1200000 Hz | 1 ul | 8-XFBGA, DSBGA | 1.2999999523162842 V | 8-DSBGA | 0.4000000059604645 A | Buck | Surface Mount | 2.1500000953674316 V | |
Texas Instruments TPS627431YFPRBuck Switching Regulator IC Positive Programmable 1.3V 1 Output 400mA 8-XFBGA, DSBGA | 5.5 V | Step-Down | 3.0999999046325684 V | Positive | Programmable | 125 °C | -40 °C | 1200000 Hz | 1 ul | 8-XFBGA, DSBGA | 1.2999999523162842 V | 8-DSBGA | 0.4000000059604645 A | Buck | Surface Mount | 2.1500000953674316 V |
Key Features
• Input voltage range VINfrom 2.15 V to 5.5 VInput voltage range down to 2.0 V once startedoutput currentTPS62743 300 mATPS627431 400 mA360-nA operational quiescent currentUp to 90% efficiency at 10-µA output currentPower save mode operationSelectable output voltagesEight voltage options between 1.2 V to 3.3 VOutput voltage dischargeLow output voltage rippleAutomatic transition to no ripple 100% modeRF friendly DCS-Control™Total solution size < 10 mm2Small 1.6-mm × 0.9-mm, 8-ball WCSP packageInput voltage range VINfrom 2.15 V to 5.5 VInput voltage range down to 2.0 V once startedoutput currentTPS62743 300 mATPS627431 400 mA360-nA operational quiescent currentUp to 90% efficiency at 10-µA output currentPower save mode operationSelectable output voltagesEight voltage options between 1.2 V to 3.3 VOutput voltage dischargeLow output voltage rippleAutomatic transition to no ripple 100% modeRF friendly DCS-Control™Total solution size < 10 mm2Small 1.6-mm × 0.9-mm, 8-ball WCSP package
Description
AI
The TPS62743 is a high efficiency step down converter with ultra low quiescent current of typical 360 nA. The device is optimized to operate with a 2.2-µH inductor and 10µF output capacitor. The device uses DCS-Control™ and operates with a typical switching frequency of 1.2 MHz. In Power Save Mode the device extends the light load efficiency down to a load current range of 10-µA and below. TPS62743 provides an output current of 300 mA. Once started the device operates down to an input voltage range of 2.0 V. This allows to operate the device directly from a single Li-MnO2coin cell.
The TPS62743 provides 8 programmable output voltages between 1.2V and 3.3V selectable by three selection pins. The TPS62743 is optimized to provide a low output voltage ripple and low noise using a small output capacitor. Once the input voltage comes close to the output voltage the device enters the No Ripple 100% mode to prevent an increase of output ripple voltage. In this operation mode the device stops switching and turns the high side MOSFET switch on.
The TPS62743 is a high efficiency step down converter with ultra low quiescent current of typical 360 nA. The device is optimized to operate with a 2.2-µH inductor and 10µF output capacitor. The device uses DCS-Control™ and operates with a typical switching frequency of 1.2 MHz. In Power Save Mode the device extends the light load efficiency down to a load current range of 10-µA and below. TPS62743 provides an output current of 300 mA. Once started the device operates down to an input voltage range of 2.0 V. This allows to operate the device directly from a single Li-MnO2coin cell.
The TPS62743 provides 8 programmable output voltages between 1.2V and 3.3V selectable by three selection pins. The TPS62743 is optimized to provide a low output voltage ripple and low noise using a small output capacitor. Once the input voltage comes close to the output voltage the device enters the No Ripple 100% mode to prevent an increase of output ripple voltage. In this operation mode the device stops switching and turns the high side MOSFET switch on.