TLE4470 Siemens Semiconductor Group, TLE4470 Datasheet

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TLE4470

Manufacturer Part Number
TLE4470
Description
Dual Low-Drop Voltage Regulator
Manufacturer
Siemens Semiconductor Group
Datasheet

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Features
• Stand-by output 180 mA; 5 V
• Adjustable reset switching threshold
• Main output 350 mA; tracked to the stand-by output
• Low quiescent current consumption in standby mode
• Disable function for main output
• Wide operation range: up to 45 V
• Very low dropout
• Power-On-Reset circuit sensing the stand-by voltage
• Early warning comparator for supply undervoltage
• Output protected against short circuit
• Wide temperature range: – 40 C to 150 C
• Over-temperature protection
• Over-load protection
Type
TLE 4470 GS
TLE 4470 G
Functional Description
The TLE 4470 is a monolithic integrated voltage regulator with two very low-drop
outputs, a main output Q2 for loads up to 350 mA and a stand by output Q1 providing a
maximum of 180 mA. The device is available in both the P-DSO-14-4 and P-DSO-20-6
packages. It is designed to supply microprocessor systems under the severe conditions
of automotive applications and is therefore equipped with additional protection functions
against over load, short circuit and over temperature. Of course the TLE 4470 can also
be used in other applications where two stabilized voltages are required.
The device operates in the wide temperature range of – 40 C to 150 C.
The stand by regulator transforms an input voltage
V
of an external voltage divider the main output voltage can be set to
Semiconductor Group
Dual Low-Drop Voltage Regulator
Q1rated
= 5 V within an accuracy of 2%, whereas the main regulator is adjustable. By use
Ordering Code
Q67006-A9309
Q67006-A9308
2 %
1
V
I
in the range of 5.6 V
Package
P-DSO-14-4 (SMD)
P-DSO-20-6 (SMD)
P-DSO-14-4
P-DSO-20-6
V
Q2
V
TLE 4470
5 V for the
1998-11-01
I
45 V to

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TLE4470 Summary of contents

Page 1

Dual Low-Drop Voltage Regulator Features • Stand-by output 180 mA • Adjustable reset switching threshold • Main output 350 mA; tracked to the stand-by output • Low quiescent current consumption in standby mode • Disable function for main ...

Page 2

TLE 4470 G type (P-DSO-20-6 package). which is proportional to the output voltage series PNP transistor via a buffer. The main output voltage For the TLE 4470 GS (P-DSO-14-4 package) the output voltage is fixed save ...

Page 3

Pin Definitions and Functions P-DSO-20-6 Pin No. Symbol Function 1 RADJ 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 ...

Page 4

P-DSO-14-4 Pin No. Symbol DIS GND 10, 11, 12 GND RADJ Reset switching threshold adjust not available in P-DSO-14-4 package. Reset is ...

Page 5

Reference V 18 REF 2 3 DIS V REF Reset 20 SI Sense Pin numbers valid for P-DSO-20-6 (TLE 4470 G) Figure 2 Block Diagram Semiconductor Group Stand-by-Regulator Main Regulator RADJTH = V SITH 5 ...

Page 6

Absolute Maximum Ratings – < T < 150 C j Parameter Stand-by Regulator Input Voltage Voltage Current Main Regulator Input Voltage Voltage Current V Stand-by Output Q1 Voltage Current V Main Output Q2 Voltage Current Main Regulator Adjust ...

Page 7

Absolute Maximum Ratings (cont’d) – < T < 150 C j Parameter Disable Input DIS Voltage Current Sense Input SI Voltage Current Reset Delay D Voltage Current Reset Switching Threshold Adjust RADJ Voltage Current Temperatures Junction temperature Storage ...

Page 8

Operating Range Parameter Stand-by regulator input voltage Main regulator input voltage Stand-by regulator output current Main regulator output current Disable input voltage Sense input voltage Junction temperature Thermal Resistances Junction pin Junction ambient Note: In the operating range the functions ...

Page 9

Electrical Characteristics < ; – < DIS DISL I1 I2 Parameter Symbol Stand-by Regulator Output 1 V Output voltage Q1 Output current I Q1 limitation V Output drop voltage; DRQ1 ...

Page 10

Electrical Characteristics (cont’ < DIS DISL Parameter Symbol Main-Regulator Output 2 Output voltage V Q2 tracking accuracy Output voltage V Q2 tracking accuracy I Adjust input current ADJ2 I Output ...

Page 11

Electrical Characteristics (cont’ < ; – < DIS DISL I1 I2 Parameter Symbol R ESR of output ESRQ2 capacitance Disable Input DIS V H-input voltage DISH threshold V L-input voltage ...

Page 12

Electrical Characteristics (cont’ < DIS DISL Parameter Symbol Sense Input SI and Output SQ Sense threshold V SITH voltage V Sense threshold SIHY hysteresis V Sense output low SQL voltage ...

Page 13

Application Information D1 1N4004 Batt ZD1 100 nF Reference 2 18 Control 3 DIS R SI1 330 k V REF SI2 SI 100 Pin numbers valid for ...

Page 14

Input, Output C The input capacitor is necessary for compensating line influences. Using a resistor of I approx series with be damped. To stabilize the regulation circuits of the stand-by and main regulator, output C C capacitors and ...

Page 15

Power-on-Reset Thermal Shutdown Figure 4 Reset Timing Reset Switching Threshold The internally set reset threshold is 4.65 V. When using the TLE 4470 G (P-DSO-20-6) this threshold ...

Page 16

V I1 Band-Gap Reference 1.35 V TLE 4470 G Figure 5 Early Warning The early warning function compares a voltage defined by the user to an internal reference voltage. Therefore the voltage to be supervised has to be scaled down ...

Page 17

Typical Performance Characteristics V Drop Voltage versus Output Current Q1 600 -0 Qnom V OFF Q2 500 400 300 T = 125 ˚ ˚C 200 ...

Page 18

V V Output Voltage , versus Input Voltage ( = ) ˚ ...

Page 19

I Current Consumption I Output 2 Current (low load) Q2 1800 ˚ 13 1500 1200 900 600 300 Current Consumption I ...

Page 20

I Charge Current versus d T Temperature 13 - Semiconductor Group Sense Threshold Temperature AED02503 1 SITH ...

Page 21

Package Outlines P-DSO-14-4 (Plastic Dual Small Outline) 1.27 +0. 8.75 Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Does not include dambar protrusion of 0.05 max. per side ...

Page 22

P-DSO-20-6 (Plastic Dual Small Outline) 1.27 +0.15 2) 0.35 Index Marking 1) Does not include plastic or metal protrusions of 0.15 max per side 2) Does not include dambar protrusion of 0.05 max per side Sorts of Packing Package outlines ...

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