TLE4299_07 datasheet(15/25 Pages) INFINEON | Low-Drop Fixed Voltage Regulator

Part #	TLE4299

Description	Low-Drop Fixed Voltage Regulator

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Manufacturer	INFINEON [Infineon Technologies AG]

Direct Link	http://www.infineon.com

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15 / 25 page

TLE 4299

Datasheet

15

Rev. 1.1, 2007-10-17

Figure 8

Reset Timing Diagram

The reset output is an open collector output. An external pull-up can be added with a

resistor value of at least 5.6 k

Ω.

In addition the reset switching threshold can be adjusted by an external voltage divider.

The feature is useful for microprocessors which guarantee safe operation down to volt-

ages below the internally set reset threshold of 3.10V typical. If the internal used reset

threshold of typical 3.10V is used, the pin RADJ has to beconnected to GND.

If a lower reset threshold is required by the system, a voltage divider defines the reset

threshold

VRth between 2.5V and 3.10V as long as the Input Voltage V

I>4.4V

V

Rth = VRADJ TH * (RADJ1 + RADJ2) / RADJ2 (3)

V

RADJ TH is typical 1.36 V.

AED03107

Thermal

t d

Power-on-Reset

Voltage Dip

Secondary

Overload

at Output

Spike

t

V

ST

V

RO, SAT

RT

V

t RR

<

RR

t

at Input

Undervoltage

Shutdown

V

RO

D

V

t

Q

V

I

V

DT

d

I

C

D

=

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