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具有反向电压保护功能的汽车类 450mA、电池供电运行 (42V)、低压降稳压器
Output options Fixed Output
Iout (Max) (A) 0.45
Vin (Max) (V) 42
Vin (Min) (V) 5.5
Vout (Max) (V) 5
Vout (Min) (V) 5
Fixed output options (V) 5
Iq (Typ) (mA) 12
Thermal resistance θJA (°C/W) 34
Rating Automotive
Load capacitance (Min) (μF) 69
Regulated outputs (#) 1
Features Reverse voltage protection
Accuracy (%) 2.5
PSRR @ 100 KHz (dB) 20
Dropout voltage (Vdo) (Typ) (mV) 250
Operating temperature range (C) -40 to 125
  • Qualified for Automotive Applications
  • Output Voltage of 5V±2%
  • Very Low Current Consumption
  • Very Low Dropout Voltage
  • Short-Circuit Protection
  • Reverse-Polarity Protection
  • ESD Protection > 6kV

The TL720M05-Q1 devices are monolithic integrated low-dropout voltage regulators offered in 3-pin TO packages. They regulate an input voltage up to 45V to VOUT of 5V with 2% tolerance. The devices can drive loads up to 450mA and are short-circuit proof. At overtemperature, the incorporated temperature protection turns off the TL720M05-Q1 devices.

The input capacitor (CIN) compensates for line fluctuation. Using a resistor of approximately 1Ω in series with CIN dampens the oscillation of input inductivity and input capacitance. The output capacitor (COUT) stabilizes the regulation circuit. Output is stable at COUT≥22μF and ESR≤5Ω, within the operating temperature range.

The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor through a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The device also incorporates a number of internal circuits for protection against:

  • Overload
  • Overtemperature
  • Reverse polarity