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具有电源正常指示和使能功能的 1A、10V、低压降稳压器
Output options Adjustable Output, Fixed Output
Iout (Max) (A) 1
Vin (Max) (V) 10
Vin (Min) (V) 2.7
Vout (Max) (V) 5.5
Vout (Min) (V) 1.2
Fixed output options (V) 1.5, 1.8, 2.5, 2.7, 2.8, 3, 3.3, 5
Noise (uVrms) 55
Iq (Typ) (mA) 0.08
Thermal resistance θJA (°C/W) 33
Rating Catalog
Load capacitance (Min) (μF) 10
Regulated outputs (#) 1
Features Enable, Power good
Accuracy (%) 2
PSRR @ 100 KHz (dB) 29
Dropout voltage (Vdo) (Typ) (mV) 230
Operating temperature range (C) -40 to 125
  • Input Voltage Range: 2.7 V to 10 V
  • Low-Dropout Voltage: 230 mV typical at 1 A (TPS76850)
  • 2% Tolerance Over Specified Conditions for Fixed-Output Versions
  • Open Drain Power Good (See TPS767xx for Power-On Reset With 200-ms Delay Option)
  • Ultralow 85 μA Typical Quiescent Current
  • Available in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V, 5.0-V Fixed Output and Adjustable (1.2 V to 5.5 V) Versions
  • Fast Transient Response
  • Thermal Shutdown Protection
  • SOIC-8 (D) and TSSOP-20 (PWP) Package

All trademarks are the property of their respective owners.

This device is designed to have a fast transient response and be stable with 10 μF capacitors. This combination provides high performance at a reasonable cost.

Since the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 230 mV at an output current of 1 A for the TPS76850) and is directly proportional to the output current. Additionally, because the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85 μA over the full range of output current, 0 mA to 1 A). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family also features a shutdown mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 μA at TJ = 25°C.

Power good (PG) is an active high output, which can be used to implement a power-on reset or a low-battery indicator.