TPS71550DCKR

The TPS715 low-dropout (LDO) voltage regulators offer the benefits of high input voltage, low-dropout voltage, low-power operation, and miniaturized packaging. The devices, which operate over an input range of 2.5 V to 24 V, are stable with any capacitor greater than or equal to 0.47 μF. The low dropout voltage and low quiescent current allow operation at extremely low power levels. Therefore, the devices are ideal for powering battery management ICs. Specifically, because the devices are enabled as soon as the applied voltage reaches the minimum input voltage, the output is quickly available to power continuously operating battery charging ICs. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the low dropout voltage, typically 415 mV at 50 mA of load current, is directly proportional to the load current. The low quiescent current (3.2 μA typically) is stable over the entire range of output load current (0 mA to 50 mA).

Applications

• Ultralow Power Microcontrollers
• Cellular and Cordless Handsets
• Portable and Battery-Powered Equipment

Key features

• 24-V Maximum Input Voltage
• Low 3.2–μA Quiescent Current at 50 mA
• Stable With Any Capacitor ≥0.47 μF
• 50-mA Low-Dropout Regulator Available in 1.8 V, 1.9 V, 2.3 V, 2.5 V, 3 V, 3.3 V, 3.45 V, 5 V, and Adjustable (1.2 V to 15 V)
• Designed to Support MSP430 Families
• 1.9-V Version Ensured to be Higher Than Minimum VIN of 1.8 V
• 2.3-V Version Ensured to Meet 2.2-V Minimum VIN for Flash on MSP430F2xx
• 3.45-V Version Ensured to be Lower Than Maximum VIN of 3.6 V
• Wide Variety of Fixed-Output Voltage Options to Match VIN to the Minimum Required for Desired MSP430 Speed
• Minimum and Maximum Specified Current Limit
• 5-Pin SC70 (DCK)
• -40°C to +125°C Specified Junction Temperature Range