L9484 CAR ALTERNATOR VOLTAGE REGULATOR PRODUCT PREVIEW ■ ■ ■ ■ ■ ■ ■ ■ FOR AIR AND LIQUID COOLED APPLICATIONS AMBIENT AIR TEMPERATURE (THERMISTOR) COMPENSATED SPECIAL DEFAULT COMPENSATION CURVE WITH TS-TERMINAL OPEN COMPENSATION CURVE WITH APPLICATION SPECIFIC RESISTOR ON TS THERMAL PROTECTION FIELD DRIVER, LAMP DRIVER, RELAY DRIVER, AND DF (FIELD MONITOR) SHORT CIRCUIT PROTECTED LOAD RESPONSE CONTROL SINGLE PHASE AUTOSTART DESCRIPTION The L9484 is a monolithic multifunction generator MULTIWATT8 ORDERING NUMBER: L9484 Voltage regulator intended for use in automotive charging applications. 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. Typical Application SchematicPIN DESCRIPTION NTC 7 4 1 8 2 6 3 February 2003 This is preliminary information on a new product now in development. Details are subject to change without notice. 1/8 L9484 N° Pin 1 VGO Description 2 F+ Field Driver - High Side Drive Output 3 G Ground for ASVR (Must be connected for Ground for ASVR) 4 TS Thermistor Sense Terminal 5 Gnd 6 DF 7 L Lamp - Low Side Driver; Relay - High Side Driver 8 P Phase Sense Input Generator Output – Voltage Sense and Power Supply to ASVR Internally connected to the Tab or Slug in MW-8. Shall not be used for ASVR Ground, nor voltage applied to Pin 5 to cause ≥ 50mV Pin 5 to Pin 3. May be unconnected or externally connected to Pin 3. Inverted Field Monitor Output PIN CONNECTION (Top view) Tab connected to pin 5 8 P 7 L 6 DF 5 GND 4 TS 3 G 2 F+ 1 VGO D02AT502 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Output Current Capability Power Dissipation Short Circuit Protected Value Unit INTERNALLY LIMITED A 6 W All Terminal, to VGO and Ground THERMAL DATA Symbol Parameter Value Unit Tj Junction Temperature -40 to +150 °C Tstg Storage Temperature -50 to +150 °C Tsd Thermal Shut-Down 175 ± 15 °C 1.5 °C/W Rth j-case Thermal Resistance Junction to Case Notes: 1. The Field Drive capability shall not decrease as a function of temperature between 25°C and 150°C, at a rate faster than -0.024A/ 2/8 L9484 ELECTRICAL CHARACTERISTCS (Tcase = -35°C to +150°C continuous unless otherwise specified) Symbol Parameter VOS Operating Supply Voltage VOS ISB Test Condition Min. Typ. Max. Unit Vov V Tcase = +25°C to =150°C 8 Operating Supply Voltage Tcase = -40°C to +25°C 10 Stand-By Current VGO = 12.6V; Tcase = 25°C; 10kΩ VGO to TS; F+, G & Tab (Slug) Grounded; L, DF, & P unconnected; Regulator NOT Activated. VSP Regulator Set-Point 10kΩ between VGO and TS Curve shown in Fig. 2 VSP Regulator Set-Point NTC thermistor with R25°C = 10kΩ; Tj = 90°C Curves shown in Fig. 3 (with MURATA NTC NTH4G39A1) VNB Generator Output, No Battery No battery, IOUT = 2A to 50% Max. Load VSP - 2 TC Thermal Compensation Voltage @ VGO VLR Load Regulation 6500 grpm, 10% to 95% load 300 mV VSR Speed Regulation 15A load, 2000 to 20,000 grpm 100 mV VF-ON Output Saturation Voltage IF = 6A, VGO = 14.0V, Tcase = 25°C 750 mV VF-ON Output Saturation Voltage IF = 5A, VGO = 13.5V, Tcase = 125°C 850 mV IF-LIM Field Limit Current1 Current F+ Terminal to Gnd. @ Tcase ≤ 25°C 9.0 A IF-LIM Field Limit Current1 Current F+ Terminal to Gnd. @ Tcase = +150°C 6.0 A IG-MIN Min. Generator Current Load Current measured @ generator output 0.5 A VD-F Field Discharge Diode IF = 6A, Tcase = 25°C ID-R Diode Reverse Current VR = 20V FOSC Oscillation Frequency During LRC operation VDF DF Saturation Voltage IDF ≤ 10mA DF Output Leakage Current VDF < 25V IDF-LK Vov V 300 µA VSP + 2 V Curves shown in Figs. 2, 3 340 400 FTURBO Internal Clock Frequency VDF = 32 - 35V; thru 2.2kΩ 4X FTURBO IRD, SS, LRC Rate VDF = 32 - 35V; thru 2.2kΩ ÷ 16 1.85 V 1 mA 460 Hz 0.8 V 10 µA Hz °C (for example, Field Drive shall be capable of ≥7.2A at 100°C). 3/8 L9484 Figure 2. Set-Point Voltage vs. Mounting Tab Temperature (10kΩ between VGO & TS) 15.5 15.3 15.1 Volts 14.9 14.7 14.5 14.3 14.1 13.9 13.7 13.5 -40 -20 0 20 40 60 80 100 120 Junction Temp Figure 3. Set-Point Voltage vs. Thermistor Temperature, Tj = 90°C (Not guaranteed by testing, depending on NTC characteristics) 15.2 15.04 15 14.88 14.8 14.73 14.6 Volts 14.49 14.4 14.2 14 13.91 13.8 13.6 13.53 13.4 -40 -20 0 20 40 60 80 100 120 NTC Temp Figure 4. Set-Point Voltages vs. Mounting Tab Temperature (TS-Open) 15.2 15 14.80 14.8 14.63 Set Voltages 14.6 14.4 14.2 14.43 14.12 14.00 14 13.8 13.6 13.36 13.4 13.2 -40 -20 0 20 40 60 Temp 4/8 80 100 120 140 160 L9484 DIAGNOSTIC (Tcase = -35°C to +150°C unless otherwise specified) Symbol VOV VL-SAT Parameter Conditions Over-Voltage Lamp ON Saturation Voltage IL = 0.5A (sinked by ASVR) VL-SAT-BO Lamp ON Voltage 2 VL-RLY TDELAY Min. Typ. Max. Units VSP + 1 VSP + 1.3 VSP + 2 V >VL-ACT 1.33 1.45 V 3.8 5 V 1.85 V 1.3 s IL < 0.5A, VGO = Open; Tcase = 35°C to 85°C Lamp OFF (Relay Drive) Saturation Voltage (vs. B+) IL = 750mA (Sourced by ASVR) Fault Indication Delay Time Delay before Lamp ON 3 Tcase < 125C 0.9 1.1 2. This condition can happen when the connection between the battery and VGO or the output terminal of the generator is broken. The 1.1 second delay is not required, and current is sinked by ASVR. 3. When no fault is detected the Lamp terminal is pulled up by ASVR. FAULT INDICATION TABLE TDelay? Conditions Initial KEY-ON Bulb and Wiring Check (Lamp ON for 1 sec ± 15% after initial KEY-ON) No VGO > VOV Yes VP < VP-F AND VGO < VSP Yes FP < FP-TR @ VP-TR Yes No Connection Between Battery and VGO No At Start: Lamp ON until FP>FP-IR AND VP>VP-F. i.e. until VP reaches 8V. No REGULATION FEATURES Symbol Parameter Conditions Min. Typ. Max. Unit 1 1.15 V 0.78 mA VL-PD L Terminal Regulator Activate Threshold VGO=12.6V 0.8 IL-PD L Terminal Pull Down Current VL = VL-ACT VGO=12.6V 0.09 VP-IR Initiate Regulation Phase Voltage Threshold Regulator Activated 1.1 1.3 1.5 V VP-TR Terminate Regulation Phase Voltage Threshold Regulator Activated 1.1 1.3 1.5 V 7.0 8 9.0 V 3.5 mA 167 Hz VP-F IP FP-IR Phase Input Voltage Low FAULT Threshold Phase Terminal Current Sink Initiate Regulation Phase Frequency VP > 1.5V and < 12.6V VGO = 12.6V 0.3 123 145 5/8 L9484 REGULATION FEATURES (continued) Symbol FP-TR Parameter Conditions Terminate Regulation Phase Frequency Min. Typ. Max. Unit 59 72 86 Hz IRD Initiate Regulation Delay Regulator Activated, VP-IR AND FP-IR Conditions Met First Time. 1.7 2 2.3 s FSDC Field Strobe Duty Cycle Regulator Activated AND (Regulation Terminated OR Regulation NOT Initiated) 16 18.75 22 % Load Response Control Rate Field Drive Duty Cycle Increase 34 40 46 %/s LRC Transition Frequency LRC Enabled if FP < FP-LRC 255 300 345 Hz Soft-Start LRC enabled until VSP reached regardless other conditions 34 40 46 %/s LRC FP-LRC SS 6/8 L9484 mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 0.063 E 0.49 0.55 0.019 OUTLINE AND MECHANICAL DATA 0.022 F 0.78 0.85 0.030 G 2.40 2.54 2.68 0.094 0.10 0.105 0.033 G1 17.64 17.78 17.92 0.69 0.70 0.71 H1 19.6 0.772 H2 20.2 20.65 0.795 L 20.35 0.80 0.81 L2 17.05 17.20 17.35 0.67 0.68 0.68 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L7 2.65 2.9 0.104 0.114 S 1.9 2.6 0.075 0.102 S1 1.9 2.6 0.075 0.102 U 0.40 0.55 0.015 0.022 Z 0.70 0.85 0.028 0.034 Dia1 3.65 3.85 0.144 0.152 Multiwatt8 (Pin. 5 Gnd) 7/8 L9484 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. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics © 2003 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 8/8