TLE4476 Просмотр технического описания (PDF) - Infineon Technologies

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производитель

TLE4476

Dual Low Drop Voltage Regulator

Infineon Technologies 

TLE 4476

Application Information

5.7 - 42 V

Ι

CΙ

470 nF

Bandgap

Reference

Q1

3.3 V

C Q1

22 μF

Q2

5V

C Q2

22 μF

e.g. from

EN

Ignition

GND

AES02564

Figure 3 Application Circuit

Input, Output

The input capacitor CI is necessary for compensating line influences. Using a resistor of

approx. 1 Ω in series with CI, the LC circuit of input inductivity and input capacitance can

be damped. To stabilize the regulation circuits of the stand-by and main regulator, output

capacitors CQ1 and CQ2 are necessary. Stability is guaranteed at values CQ1 ≥ 10 μF

(ESR ≤ 2 Ω) and CQ2 ≥ 10 μF (ESR ≤ 3 Ω) within the operating temperature range.

Enable

Using the enable feature the output 2 (5 V output) can be switched ON or OFF. The

enable input can be connected directly to terminal 30 (battery line) or 15 (ignition line). It

is also possible to control the output 2 via the microcontroller.

Data Sheet

8

Rev. 2.5, 2007-03-20

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