TLE4470 datasheet(3/24 Pages) INFINEON

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TLE 4470

Data Sheet

Rev. 1.2, 2008-03-20

Pin Definitions and Functions

Table 1

PG-DSO-20

Pin No.

Symbol

Function

1RADJ

Reset switching threshold adjust; for setting the reset

switching threshold connect to a voltage divider from Q1 to

GND. If this input is connected to GND, the reset is

triggered at the internal threshold.

Reset delay; connect a capacitor

D to GND for delay time

adjustment

3DIS

Disable input main regulator; Q2 disabled with high

signal

4, 5, 6, 7

GND

Ground

8RQ

Reset output; the open collector output is connected to Q1

via an integrated 30 k

Ω resistor

9SQ

Sense output; the open collector output is connected to Q1

via an integrated 30 k

Ω resistor

Stand-by regulator output voltage; block to GND with a

capacitor

Q1 ≥ 6 µF, ESR < 10 Ω at 10 kHz

ADJ2

Main regulator adjust input; Q2 can be set to higher

values than 5 V by an external voltage divider from Q2 to

GND

12, 13

Main regulator output voltage; block to GND with a

capacitor

Q2 ≥ 10 µF, ESR < 10 Ω at 10 kHz

14, 15, 16, 17

GND

Ground

Main regulator input voltage; block to GND directly at the

IC with a ceramic capacitor

Stand-by regulator input voltage; block to GND directly at

the IC with a ceramic capacitor

Sense comparator input

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