TPS715

• 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 V_IN of 1.8 V
  • 2.3-V Version Ensured to Meet 2.2-V Minimum
    V_IN for Flash on MSP430F2xx
  • 3.45-V Version Ensured to be Lower Than
    Maximum V_IN of 3.6 V
  • Wide Variety of Fixed-Output Voltage Options
    to Match V_IN to the Minimum Required for
    Desired MSP430 Speed
• Minimum and Maximum Specified Current Limit
• 5-Pin SC70 (DCK)
• –40°C to +125\xC2°C Specified Junction
  Temperature Range
• For 80-mA Rated Current and Higher Power
  Package, see TPS715A

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The usual PNP pass transistor has been replaced by a PMOS pass element.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).