tle4258 Infineon Technologies Corporation, tle4258 Datasheet

tle4258

Manufacturer Part Number

tle4258

Description

Low-drop Voltage Regulator

Manufacturer

Infineon Technologies Corporation

Datasheet

1.TLE4258.pdf (11 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

tle4258 E-7-1

Manufacturer:

SIEMENS

Quantity:

5 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

tle4258 E-7-12

Manufacturer:

SIEMENS

Quantity:

6 000

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Circuit Description

The TLE 4258 incorporates a main and standby-control regulator: The amplifiers regulate the

output voltage by comparing the output voltage (from the voltage divider) with a highly precise

reference voltage. The standby regulator directly controls the base of a PNP series transistor

and the main regulator via a buffer that can be turned off with inhibit pulse at pin 5. If the output

voltage V

after a delay time to be set at pin 6. The main output is current-limited and remains active up

to the input voltage V

5-V Low-Drop Voltage Regulator

Preliminary Data

Features

The TLE 4258 is a very low drop voltage regulator which provides two regulated 5-V output

voltages. The main regulator can be loaded with 750 mA and is turned on and off by pin 5 (pin

5 unconnected = main regulator off). In addition, the main regulator incorporates a short-circuit

current limitation and is turned off in case of overvoltage (V

can be loaded with 35 mA, it does not incorporate a short-circuit current limitation and remains

permanently active at positive input voltage independent of the turn-off functions of the main

regulator.

If the main regulator output voltage is less than 4.5 V, the reset output is switched to low without

delay. As soon as the reset threshold has been exceeded, a delay time to be set by an external

capacitor expires and afterwards the reset output switches to high again.

If the lines to the controller are long, the oscillating circuit of line inductance and input

capacitance C

Semiconductor Group

Type

TLE 4258

Low-drop voltage

Low quiescent current

Reset output

Protection against reverse polarity

Overvoltage protection 70 V

Short-circuit proof

Suited for automotive electronics

Inhibit input

Wide temperature range

at pin 7 drops below 4.5 V, a reset signal is released which can only be disabled

can be attenuated by a resistor 1

Ordering Code

Q67000-A8238

I OFF

Package

P-TO220-7-1

connected in series to C

P-TO220-7-1

> V

I OFF

). The standby regulator

TLE 4258

Bipolar IC

09.94

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tle4258 Summary of contents

Page 1

Low-Drop Voltage Regulator Preliminary Data Features Low-drop voltage Low quiescent current Reset output Protection against reverse polarity Overvoltage protection 70 V Short-circuit proof Suited for automotive electronics Inhibit input Wide temperature range Type Ordering Code TLE 4258 Q67000-A8238 The ...

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tle4258 Infineon Technologies Corporation, tle4258 Datasheet

tle4258

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tle4258 Summary of contents

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