TPS71H33QPWPRQ1

低压差稳压器 LOW-DROPOUT VOLTAGE REGULATORS

description

The TPS71Hxx integrated circuits are a family of micropower low-dropout LDO voltage regulators. An order of magnitude reduction in dropout voltage and quiescent current over conventional LDO performance is achieved by replacing the typical pnp pass transistor with a PMOS device.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low maximum of 32 mV at an output current of 100 mA for the TPS71H50 and is directly proportional to the output current see Figure 1. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and remains independent of output loading typically 285 µA over the full range of output current, 0 mA to 500 mA.

• Qualified for Automotive Applications

• ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model C = 200 pF, R = 0

• Available in 5-V, 4.85-V, and 3.3-V Fixed-Output and Adjustable Versions

• Very Low-Dropout Voltage . . . Maximum of 32 mV at IO = 100 mA TPS71H50

• Very Low Quiescent Current − Independent of Load . . . 285 µA Typ

• Extremely Low Sleep-State Current 0.5 µA Max

• 2% Tolerance Over Specified Conditions For Fixed-Output Versions

• Output Current Range of 0 mA to 500 mA

• TSSOP Package Option Offers Reduced Component Height for Space-Critical Applications

• Thermally Enhanced Surface-Mount Package

• Power-Good PG Status Output