L9473 CAR ALTERNATOR VOLTAGE REGULATOR 1 ■ ■ ■ ■ ■ ■ ■ ■ 2 FEATURES Figure 1. Package 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 Multiwatt8 Table 1. Order Codes Part Number Package L9473J Multiwatt8 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. The L9484 is a monolithic multifunction generator Figure 2. Block Diagram NTC 7 4 1 8 2 6 May 2005 3 Rev. 1 1/9 L9473 Table 2. PIN DESCRIPTION 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) Generator Output – Voltage Sense and Power Supply to ASVR 4 TS 5 Gnd Thermistor Sense Terminal 6 DF 7 L Lamp - Low Side Driver; Relay - High Side Driver 8 P Phase Sense Input 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 Figure 3. 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 Table 3. 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 Table 4. THERMAL DATA Symbol 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 2/9 Parameter Thermal Resistance Junction to Case L9473 Table 5. ELECTRICAL CHARACTERISTCS (Tcase = -35°C to +150°C continuous unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit VOS Operating Supply Voltage Tcase = +25°C to =150°C 8 Vov V VOS Operating Supply Voltage Tcase = -40°C to +25°C 10 Vov V ISB 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. 300 µA 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-LK FTURBO VSP + 2 V Curves shown in Figs.4, 5 1.85 V 1 mA 460 Hz IDF ≤ 10mA 0.8 V DF Output Leakage Current VDF < 25V 10 µA Internal Clock Frequency VDF = 32 - 35V; thru 2.2kΩ 340 400 4X Hz 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/ °C (for example, Field Drive shall be capable of ≥7.2A at 100°C). 3/9 L9473 Figure 4. Set-Point Voltage vs. Mounting Tab Temperature (10kΩ between VGO & TS) 15.4 15.3 15.17 15.2 15.08 15 14.86 Volts 15.01 14.77 14.8 14.84 14.69 14.59 14.6 14.41 14.4 14.3 14.2 -40 -20 0 20 40 60 80 100 120 Junction Temp Figure 5. 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 14.6 14.73 Volts 14.49 14.4 14.2 14 13.91 13.8 13.6 13.53 13.4 -40 -20 0 20 40 60 NTC Temp 4/9 80 100 120 L9473 Figure 6. Set-Point Voltages vs. Mounting Tab Temperature (TS-Open) 15.0 14.8 Set Voltage 14.6 14.73 14.63 14.4 14.43 14.2 14.0 14.12 14.00 13.8 13.78 13.6 13.4 13.2 13.0 -40 -20 0 20 40 60 80 100 120 140 160 Temp Table 6. DIAGNOSTIC (Tcase = -35°C to +150°C unless otherwise specified) Symbol Parameter Conditions VOV Over-Voltage VUV Under-Voltage FP > FP-LRC , 10kohm between S_term and VGO Lamp ON Saturation Voltage IL = 0.5A (sinked by ASVR) VL-SAT VL-SAT-BO Lamp ON Voltage 2 VL-RLY TDELAY Min. Typ. Max. Units VSP + 1 VSP + 1.3 VSP + 2 V 11.8 V 1.33 1.45 V 3.8 5 V 1.85 V 1.3 s 10.95 >VL-ACT 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. Table 7. FAULT INDICATION TABLE Conditions TDelay? 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 5/9 L9473 Table 8. REGULATION FEATURES Symbol Parameter Conditions Min. Typ. Max. Unit 1 1.15 V 0.78 mA 1.5 V 3.5 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 Phase Terminal Current Sink VP > 1.5V and < 12.6V VGO = 12.6V 0.25 IP 1.3 FP-IR Initiate Regulation Phase Frequency 123 145 167 Hz FP-TR Terminate Regulation Phase Frequency 59 72 86 Hz IRD Initiate Regulation Delay Regulator Activated, VP-IR AND FP-IR Conditions Met First Time. 2.5 3 3.5 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 8.5 10 11.5 %/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 6/9 L9473 Figure 7. Multiwatt 8 Mechanical Data & Package Dimensions mm inch DIM. MIN. TYP. 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 0.022 F 0.78 0.85 0.030 0.033 G 2.40 2.54 2.68 0.094 0.10 0.105 G1 17.64 17.78 17.92 0.69 0.70 0.71 H1 19.6 0.772 H2 L OUTLINE AND MECHANICAL DATA 20.2 20.35 20.65 0.795 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) 0043696 F 7/9 L9473 3 REVISION HISTORY Table 9. Revision History 8/9 Date Revision May 1994 1 Description of Changes First Issue L9473 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. All other names are the property of their respective owners © 2005 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 9/9