TI TPS62742DSSR

The TPS6274x is a step-down converter featuring a typical quiescent current of 360nA, operating with a compact 2.2μH inductor and 10μF output capacitor. This new DCS-Control™-based device extends the high-efficiency light-load range to below 10μA load current. The TPS62740 supports up to 300mA output current, while the TPS62742 supports up to 400mA output current. The device operates from rechargeable Li-Ion batteries, lithium chemistry batteries (such as lithium thionyl chloride (Li-SOCl2), lithium manganese dioxide (Li-MnO2)), and two or three alkaline cells. The input voltage range extends up to 5.5V, enabling operation from a single USB port and thin-film solar modules. Four VSEL pins allow the user to select output voltages from 1.8V to 3.3V in 100mV steps. The TPS6274x, used with small output capacitors, features low output ripple voltage and low noise. When the battery voltage approaches the output voltage (near 100% duty cycle), the device enters ripple-free 100% mode to prevent increased output ripple voltage. In this mode, the device stops switching and the output is connected directly to the input voltage. The integrated slew-rate-controlled load switch features a typical on-resistance of 0.6Ω and distributes the selected output voltage to temporarily active subsystems. The TPS6274 is available in a compact 12-pin 2mm×3mm² WSON package, supporting a total solution size of 31mm².

• Input voltage (VIN) range: 2.2V to 5.5V
• Typical 360nA quiescent current
• Up to 90% efficiency at 10μA output current
• Up to 300mA/400mA output current (TPS62740/TPS62742)
• RF-friendly DCS-Control™
• Up to 2MHz switching frequency
• Low output ripple voltage
• 16 selectable output voltages between 1.8V and 3.3V (100mV steps)
• Automatic transition to ripple-free 100% mode
• Slew-rate controlled load switch
• Discharge function on VOUT / LOAD
• Power-good output
• Optimized for use with miniature 2.2μH inductor and 10μF COUT
• Total solution size <31mm²
• Small 2mm×3mm² WSON package

• Bluetooth Low Energy (BLE)
• RF for Consumer Electronics (RF4CE)
• Short-Range Low-Power Communication (Zigbee)
• Industrial Instrumentation & Metering
• Energy Harvesting