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Texas Instruments TPS62125DSG | Demoboard TIDA-010026
Robust interface reference design for EnDat2.2 absolute encoders
Overview
| Topology | Buck Converter |
| Input voltage | 3-17 V |
| Output 1 | 10 V / 0.3 A |
| IC revision | E1 |
Description
The TPS62125 device is a high-efficiency synchronous step-down converter optimized for low and ultralow power applications providing up to 300-mA output current. The wide input voltage range of 3 V to 17 V supports 4-cell alkaline and 1- to 4-cell Li-Ion batteries in series configuration as well as 9-V to 15-V powered applications. The device includes a precise low-power enable comparator which can be used as an input supply voltage supervisor (SVS) to address system specific power-up and power-down requirements. The enable comparator consumes only 6-µA quiescent current and features an accurate threshold of 1.2 V typical as well as an adjustable hysteresis. With this feature, the converter can generate a power supply rail by extracting energy from a storage capacitor fed from high impedance sources such as solar panels or current loops. With its DCS-Control scheme the converter provides power-save mode operation to maintain highest efficiency over the entire load current range. At light loads the converter operates in pulse frequency modulation (PFM) mode and transitions seamlessly and automatically in pulse width modulation (PWM) mode at higher load currents. The DCS-Control™ scheme is optimized for low-output ripple voltage in PFM mode in order to reduce output noise to a minimum and features excellent AC load regulation. An open-drain power good output indicates once the output voltage is in regulation.
Features
- Wide Input Voltage Range 3 V to 17 V
- Input Supply Voltage Supervisor (SVS) With Adjustable Threshold and Hysteresis Consuming Typical 6-µA Quiescent Current
- Wide Output Voltage Range 1.2 V to 10 V
- Typical 13-µA Quiescent Current
- 350-nA Typical Shutdown Current
- Seamless Power Save Mode Transition
- DCS-Control™ Scheme
- Low Output Ripple Voltage
- Up to 1-MHz Switching Frequency
- Highest Efficiency over Wide VIN and VOUT Range
- Pin to Pin Compatible with TPS62160/70
- 100% Duty Cycle Mode
- Power Good Open Drain Output
- Output Discharge Function
- Small 2-mm × 2-mm 8-pin WSON Package
Typical applications
- 9-V to 15-V Standby Power Supply / Inverter (Negative VOUT)
- 4-Cell Alkaline, 1- to 4-Cell Li-Ion Battery-Powered Applications / Energy Harvesting
- Embedded Processing
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IR(A) | ISAT(A) | RDC(mΩ) | fres(MHz) | Center pin Ø (Value)(mm) | Plug OD(mm) | Type | Working Voltage(V (DC)) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 525 nm, Green | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]525 nm | Emitting ColorGreen | Peak Wavelength [typ.]515 nm | Luminous Intensity [typ.]430 mcd | Forward Voltage [typ.]3.2 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | Size0603 | Operating Temperature -40 °C up to +85 °C | – | – | – | Length1.6 mm | Width0.8 mm | Height0.7 mm | – | PackagingTape and Reel | – | – | – | – | – | – | – | – | – | |||
 | WE-LQS SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LQS SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | Size4018 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length4 mm | Width4 mm | Height1.8 mm | – | – | Inductance22 µH | Rated Current0.7 A | Saturation Current1.1 A | DC Resistance290 mΩ | Self Resonant Frequency23 MHz | – | – | – | – | ||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | Capacitance100 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | |||||
 | WR-DC Power Jacks, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-DC Power Jacks | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +85 °C | – | Insulation Resistance100 MΩ | – | – | – | – | – | PackagingTape and Reel | – | Rated Current5 A | – | – | – | Center pin Ø2 mm | Recommended Plug outer Ø5.5 mm | TypeRight Angled | Working Voltage24 V (DC) |