TLE6365G datasheet(9/18 Pages) INFINEON

tên linh kiện	TLE6365G

Giải thích chi tiết về linh kiện	Step Down Voltage Regulator with Reset

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TLE 6365

Data Sheet

Rev. 1.9, 2007-07-30

Circuit Description

Below some important sections of the TLE 6365 are described in more detail.

Power On Reset

In order to avoid any system failure, a sequence of several conditions has to be passed.

In case of

CC power down (VCC < VRT for t > tRR) a logic LOW signal is generated at the

pin RO to reset an external microcontroller. When the level of

CC reaches the reset

threshold

RT, the signal at RO remains LOW for the Power-up reset delay time tRD

before switching to HIGH. If

CC drops below the reset threshold VRT for a time extending

the reset reaction time

RR, the reset circuit is activated and a power down sequence of

period

RD is initiated. The reset reaction time tRR avoids wrong triggering caused by short

“glitches” on the

CC-line.

Figure 3

Reset Function

AET03325.VSD

Invalid

Start Up

Invalid

Typ. 4.70 V

Typ. 4.65 V

1 V

ON Delay

Started

ON Delay

Stopped

ON Delay

Power

Start-Up

Normal

Failed

Normal

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