l9466 STMicroelectronics, l9466 Datasheet

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l9466

Manufacturer Part Number
l9466
Description
Car Alternator Voltage Regulator
Manufacturer
STMicroelectronics
Datasheet

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L9466
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l9466N
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ST
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The L9466 is a monolithic multifunction generator
Voltage regulator intended for use in automotive
charging applications.
Figure 2. Block Diagram
May 2005
FOR AIR AND LIQUID COOLED
APPLICATIONS
DF OUTPUT (INVERTED FIELD MONITOR)
THERMAL PROTECTION
FIELD DRIVER, LAMP DRIVER, RELAY
DRIVER, AND DF (FIELD MONITOR) SHORT
CIRCUIT PROTECTED
LOAD RESPONSE CONTROL
SINGLE PHASE AUTOSTART
FEATURES
DESCRIPTION
CAR ALTERNATOR VOLTAGE REGULATOR
This All Silicon Voltage Regulator regulates the
output of an automotive generator by controlling
the field winding current by means of a variable
frequency PWM high side driver.
Figure 1. Package
Table 1. Order Codes
Part Number
L9466N
Multiwatt8
Multiwatt8
Package
L9466
Rev. 1
1/8

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l9466 Summary of contents

Page 1

... DRIVER, AND DF (FIELD MONITOR) SHORT CIRCUIT PROTECTED LOAD RESPONSE CONTROL ■ SINGLE PHASE AUTOSTART ■ 2 DESCRIPTION The L9466 is a monolithic multifunction generator Voltage regulator intended for use in automotive charging applications. Figure 2. Block Diagram May 2005 CAR ALTERNATOR VOLTAGE REGULATOR Figure 1. Package Table 1. Order Codes ...

Page 2

... L9466 Table 2. PIN DESCRIPTION N° Pin 1 V Generator Output – Voltage Sense and Power Supply to ASVR Field Driver - High Side Drive Output 3 G Ground for ASVR (Must be connected for Ground for ASVR Battery Sense Input 5 Gnd Internally connected to the Tab or Slug in MW-8. ...

Page 3

... 25°C F case V = 20V R During LRC operation ≤ 10mA < 25V 35V; thru 2.2kΩ 35V; thru 2.2kΩ DF L9466 Min. Typ. Max. Unit 8 Vov V 10 Vov V µA 300 Curve shown in Fig Curves shown in Figs. 4 ...

Page 4

... L9466 Table 6. DIAGNOSTIC (Tcase = -35°C to +150°C unless otherwise specified) Symbol Parameter V Over-Voltage OV V Under-Voltage UV V Lamp ON Saturation Voltage L-SAT V 2 L-SAT-BO Lamp ON Voltage V Lamp OFF (Relay Drive) L-RLY Saturation Voltage (vs. B+) T Fault Indication Delay Time DELAY 2. This condition can happen when the connection between the battery and VGO or the output terminal of the generator is broken. ...

Page 5

... Regulator Activated, V AND P-IR F Conditions Met First Time. P-IR Regulator Activated AND (Regulation Terminated OR Regulation NOT Initiated) Field Drive Duty Cycle Increase LRC Enabled if F < P-LRC LRC enabled until V reached SP regardless other conditions L9466 Min. Typ. Max. Unit 1 18. 8.5 10 11.5 %/s 255 ...

Page 6

... L9466 Figure 5. Multiwatt 8 Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX 2.65 C 1.6 E 0.49 0.55 F 0.78 0.85 G 2.40 2.54 2.68 G1 17.64 17.78 17.92 H1 19.6 H2 20.2 L 20.35 20.65 L2 17.05 17.20 17.35 L3 17.25 17.5 17.75 L4 10.3 10.7 10.9 L7 2.65 2.9 S 1.9 2.6 S1 1.9 2.6 U 0.40 0.55 Z 0.70 0.85 Dia1 3.65 3.85 6/8 inch MIN. TYP. MAX. 0.197 0.104 0.063 0.019 0.022 0.030 0.033 0.094 0.10 0.105 0.69 0.70 0.71 0.772 0.795 0.80 0.81 0.67 0.68 0.68 0.679 0.689 0.699 0.406 ...

Page 7

... REVISION HISTORY Table 9. Revision History Date Revision May 1994 1 First Issue Description of Changes L9466 7/8 ...

Page 8

... L9466 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...

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