Q67006-A9362 Просмотр технического описания (PDF) - Siemens AG

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Q67006-A9362

Dual Low-Drop Voltage Regulator

Siemens AG 

TLE 4476 GM

Application Information

4.5 - 42 V

Ι1

CΙ

470 nF

Bandgap

Reference

2 Q1

3.3 V

C Q1

22 µF

4 Q2

5V

C Q2

22 µF

e.g. from

Ignition

EN 5

3

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

Enable

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

input can be connected directly to terminl 30 (battery line) or 15 (ignition line). Of course

its also possible to conrol the output 2 via the microcontroller.

Semiconductor Group

8

1998-11-01

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