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L585D1

STMicroelectronics
Part Number L585D1
Manufacturer STMicroelectronics
Description CAR ALTERNATOR REGULATOR
Published Mar 22, 2005
Detailed Description L585 CAR ALTERNATOR REGULATOR . . . . . . . . ALTERNATOR VOLTAGE CONTROL COMPLETE FAULT DIAGNOSTICS DRIVES 3 W LAMP DI...
Datasheet PDF File L585D1 PDF File

L585D1
L585D1

Overview
L585 CAR ALTERNATOR REGULATOR .
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ALTERNATOR VOLTAGE CONTROL COMPLETE FAULT DIAGNOSTICS DRIVES 3 W LAMP DIRECTLY LAMP SHORT CIRCUIT PROTECTION SENSING INTERRUPT PROTECTION 100 V DUMP PROTECTION 300 V LOW ENERGY SPIKE PROTECTION THERMAL PROTECTION DIP16 DESCRIPTION The L585 is an integrated circuit designed for use with an NPN darlington as a voltage regulator in a threephase alternator charging system.
It includes fault diagnostic circuitry which drives a 3 W warning lamp in fault conditions such as open or short circuit connections.
Protection against load dump transients, short circuits and low energy spikes is incorporated.
BLOCK DIAGRAM SO16 ORDERING NUMBERS : L585 (DIP16) L585D1 (SO16) November 1991 1/9 L585 PIN CONNECTION (*) MUST BE LEFT FLOATING ABSOLUTE MAXIMUM RATINGS Symbol VS VD Tj Ptot Tstg Top Dump Voltage Junction Temperature Range Power Dissipation at Tamb = 80°C Junction and Storage Temperature Range Operating Temperature Range Parameter Operating supply Voltage (through R S) Value 28 100 – 40 to 150 1 – 55 to 150 – 40 to 125 Unit V V °C W °C °C THERMAL DATA Symbol Parameter Max Max Value 80 50 Unit °C/W °C/W Rth j-amb Thermal Resistance Junction-ambient (*) for DIP 16 Rth j-alumina(*) Thermal Resistance Junction-alumina for SO-16 No te : Soldered on PC board that simulates an application with medium device density on board.
(*) Thermal resistance junction-pins with the chip soldered on the middle of an alumina supporting substrate measuring 15 ö 20 mm ; 0.
65 mm thickness and infinite heathsink.
2/9 L585 PIN FUNCTIONS N° 1 Name Alternator Voltage Sensing Functions Connection for voltage regulation sensing.
The regulation sensitivity is a function of R1 and is given by : ∆ VA S= = 0.
5mV ⁄ Ω ∆ R1 A capacitor connected between these two pins filters the feedback signal from the regulated output.
Typically the input impedance is 15KΩ.
When this pin is left open circuit the overvoltage threshold is a described in the specificat...


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