tle4473gv55-2 Infineon Technologies Corporation, tle4473gv55-2 Datasheet

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tle4473gv55-2

Manufacturer Part Number
tle4473gv55-2
Description
Dual Low Drop Voltage Regulator
Manufacturer
Infineon Technologies Corporation
Datasheet

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Dual Low Drop Voltage Regulator
Features
Functional Description
The TLE 4473 is a monolithic integrated voltage regulator with two very low drop outputs,
a main output Q1 for loads up to 300 mA and a stand by output Q2 providing a maximum
of 190 mA. The stand-by regulator transforms an input voltage
V
output voltage and provides also 5 V. Versions of the device with 5 V/3.3 V and 5 V/2.6 V
are available, please refer to the data sheet TLE 4473 G V53/TLE 4473 G V52. Two
Inhibit Pins allow to use either both output voltages or to disable only Q1 or to switch off
both outputs, the latter causing the current consumption to drop below 1 µA. The
TLE 4473 is designed to supply microprocessor systems and sensors under the severe
conditions of automotive applications and is therefore equipped with additional
protection functions against overload, short circuit and overtemperature. The device
operates in the wide junction temperature range of -40 °C to 150 °C.
Type
TLE 4473 GV55-2
Target Data Sheet
I
≤ 42 V to
Stand-by output 190 mA; 5 V ± 2%
Main output: 300 mA, 5 V
tracked to the stand-by output
Low quiescent current consumption
Disable function separately for both outputs
Wide operation range: up to 42 V
Very low dropout voltage
2 independent reset circuits
Watchdog
Output protected against short circuit
Wide temperature range: -40 °C to 150 °C
Overtemperature protection
Overload protection
V
Q2
= 5.0 V (±2%) output voltage. The main output is tracked to the stand by
Ordering Code
on request
1
Package
P-DSO-12-4
V
I
in the range of 5.6 V ≤
Marking
TLE4473GV55-2
TLE 4473 GV55-2
P-DSO-12
Rev. 0.2, 2005-07-26

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tle4473gv55-2 Summary of contents

Page 1

... The device operates in the wide junction temperature range of -40 °C to 150 °C. Type Ordering Code TLE 4473 GV55-2 on request Target Data Sheet TLE 4473 GV55-2 P-DSO- the range of 5.6 V ≤ I Package Marking P-DSO-12-4 TLE4473GV55-2 1 Rev. 0.2, 2005-07-26 ...

Page 2

The device features a reset with adjustable power on delay for each of the outputs. In addition the output for the microcontroller supply comes up with a watchdog in order to supervise a connected microcontroller Reset and Watchdog Behavior The ...

Page 3

V W Ι V Ι DU2 V DL2 V RO2 DU2 DL2 WI Ι DD2 Figure 1 Watchdog Timing Schedule Target Data Sheet ( V ...

Page 4

I V Bat Ove rte itio ...

Page 5

Application Information The output voltage is divided by a voltage divider and compared to an internal reference voltage. A regulation loop controls the Q2 output in order to achieve a stable output voltage at the Q2 pin. A second regulation ...

Page 6

Table 1 Pin Definitions and Functions Pin No. Symbol Function 1 WI Watchdog input; input for watchdog pulses, positive edge triggered. 2 RO1 Reset and watchdog output for Q1; open collector output. Connect to pull-up resistor. 3 RO2 Reset output ...

Page 7

Table 2 Absolute Maximum Ratings -40 °C < T < 150 °C j Parameter Input I Voltage Current Stand-by Output Q2 Voltage Current Main Output Q1 Voltage Current Inhibit Input INH1 Voltage Current Inhibit Input INH2 Voltage Current Reset Output ...

Page 8

Table 2 Absolute Maximum Ratings (cont’d) -40 °C < T < 150 °C j Parameter Watchdog Input WI Voltage Current Temperatures Junction temperature Storage temperature Table 3 Operating Range Parameter Input voltage Junction temperature Thermal Resistances P-DSO-12-4 Junction pin Junction ...

Page 9

Table 4 Electrical Characteristics -40 °C < I1 INH1 INH2 Parameter Symbol Stand-by Regulator Output Q2 Output voltage V Q2 Output current I Q2 limitation Output drop voltage; V DRQ2 ...

Page 10

Table 4 Electrical Characteristics (cont’ 13 -40 °C < I1 INH1 INH2 Parameter Symbol Inhibit Input INH2 Turn-on Voltage V INH2 ON Turn-off Voltage V INH2 OFF H-input current I INH2 ...

Page 11

Table 4 Electrical Characteristics (cont’ 13 -40 °C < I1 INH1 INH2 Parameter Symbol Main (Tracked) Regulator Output Q1 Output voltage V Q1 Output voltage = V ∆ Q tracking accuracy ...

Page 12

Table 4 Electrical Characteristics (cont’ 13 -40 °C < I1 INH1 INH2 Parameter Symbol Reset Timing D1 Charge current I DC1 Upper timing V DU1 threshold Lower timing V DL2 threshold ...

Page 13

Typical Performance Characteristics Output Voltage V versus Q2 Input Voltage ...

Page 14

INH1 Input Current versus Inhibit Voltage 8 µ Target Data Sheet ...

Page 15

Package Outline 6.4 ±0.1 A (Mold 12x +0.13 0.4 12 Index Marking 1 7.8 ±0.1 (Heatslug) 1) Does not include plastic or metal protrusion of 0.15 max. per side GPS09349 8.1 0.65 MAX. hlg09455 ...

Page 16

Edition 2005-07-26 Published by Infineon Technologies AG, St.-Martin-Strasse 53, 81669 München, Germany © Infineon Technologies AG 2005. All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as a guarantee of ...

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