| 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) | 5 |
| Thermal resistance θJA (°C/W) | 33 |
| Rating | Automotive |
| Load capacitance (Min) (μF) | 10 |
| Regulated outputs (#) | 1 |
| Features | Power good, Reverse voltage protection |
| Accuracy (%) | 2 |
| PSRR @ 100 KHz (dB) | 27 |
| Dropout voltage (Vdo) (Typ) (mV) | 250 |
| Operating temperature range (C) | -40 to 125 |
- Qualified for Automotive Applications
- Output Voltage 5 V ± 2%
- Very Low Current Consumption
- Power-On and Undervoltage Reset
- Reset Low-Level Output Voltage < 1 V
- Very Low Dropout Voltage
- Short-Circuit Proof
- Reverse-Polarity Proof
The TLE4275 is a monolithic integrated low-dropout voltage regulator offered in a 5-pin TO package. The device regulates an input voltage up to 45 V to VOUT = 5 V (typ). The device can drive loads up to 450 mA and is short-circuit proof. At overtemperature, the incorporated temperature protection turns off the TLE4275. The device generates a reset signal for an output voltage, VOUT,rt, of 4.65 V (typ). By the use of an external delay capacitor, one can program the reset delay time.
The input capacitor, CIN, compensates for line fluctuation. Using a resistor of approximately 1 Ω in series with CIN dampens the oscillation of input inductance and input capacitance. The output capacitor, COUT, stabilizes the regulation circuit. The specification for stability is at COUT≥22μF and ESR≤5Ω, within the operating temperature range. Stability for electrolytic capacitors specifically is at COUT ≥ 68 μF within the operating temperature range. See the application report on low-temperature stability, SLVA501, for further details.
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, and Reverse Polarity.