TPS62120DCNR

The TPS6212X device family is a high efficient synchronous step down DC-DC converter optimized for low power applications. It supports up to 75mA output current and allows the use of tiny external inductors and capacitors. The wide operating input voltage range of 2V to 15V supports energy harvesting, battery powered and as well 9V or 12V line powered applications. With its advanced hysteretic control scheme the converter provides power save mode operation. At light loads the converter operates in PFM mode (pulse frequency modulation) and transitions automatically in PWM (pulse width modulation) mode at higher load currents. The Power Save Mode maintains high efficiency over the entire load current range. The hysteretic control scheme is optimized for low output ripple voltage in PFM mode in order to reduce output noise to a minimum. It consumes only 10uA quiescent current from VIN in PFM mode operation. In shutdown mode, the device is turned off. An open drain power good output is available in the TPS62120 and indicates once the output voltage is in regulation. TPS62120 has an additional SGND pin which is connected to GND during shutdown mode. This output can be used to discharge the output capacitor. The TPS62120 is available in a small 3×3 mm² 8 pin SOT 23 package and the TPS62122 in a 2×2 mm² 6 pin SON package.

Applications

• Low Power RF Applications
• Ultra Low Power Microprocessor
• Energy Harvesting
• Industrial Measuring

Key features

• Wide Input Voltage Range 2V to 15V
• Up to 96% Efficiency
• Power Save Mode with 11 μA Quiescent Current
• Output Current 75mA
• Output Voltage Range 1.2V to 5.5V
• Up to 800kHz Switch Frequency
• Synchronous Converter, no External Rectifier
• Low Output Ripple Voltage
• 100% Duty Cycle for Lowest Dropout
• Small SOT 8 pin (TPS62120) and 2x2 SON 6 pin (TPS62122) Package
• Internal Soft Start
• Power Good Open Drain Output TPS62120
• Open Drain Output for Output Discharge TPS62120
• 2.5V Rising / 1.85V Falling UVLO Thresholds