L9473 Car alternator voltage regulator Features Description

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1 Car alternator voltage regulator Features For air and liquid cooled applications Ambient air temperature (thermistor) compensated Special default compensation curve with TSterminal 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 is a monolithic multifunction generator Voltage regulator intended for use in automotive charging applications. Multiwatt8 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. Table 1. Device summary Order code Package Packing J Multiwatt8 Tube October 2008 Rev 2 1/

2 Contents Contents 1 Block diagram and pin description Block diagram Pin description Electrical specifications Absolute maximum ratings Thermal data Electrical characteristcs Package information Revision history /10

3 Block diagram and pin description 1 Block diagram and pin description 1.1 Block diagram Figure 1. Block diagram NTC Pin description Table 2. Pin description N Pin Description 1 V GO Generator Output Voltage Sense and Power Supply to ASVR 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 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. 6 DF Inverted Field Monitor Output 7 L Lamp - Low Side Driver; Relay - High Side Driver 8 P Phase Sense Input Figure 2. Pin connection (top view) 8 P 7 L 6 DF 5 GND 4 TS 3 G 2 F+ 1 V GO Tab connected to pin 5 D02AT502 3/10

4 Electrical specifications 2 Electrical specifications 2.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol Parameter Value Unit I OC Output current capability Internally limited A P tot Power dissipation 6 W Short circuit protected All terminal, to VGO and GND 2.2 Thermal data Table 4. Thermal data Symbol Parameter Value Unit T j Junction temperature -40 to +150 C T stg Storage temperature -50 to +150 C T sd Thermal shut-down 175 ± 15 C R th j-case Thermal resistance junction to case 1.5 C/W 2.3 Electrical characteristcs Table 5. Electrical characteristcs (T case = -35 C to +150 C continuous unless otherwise specified) Symbol Parameter Test condition Min. Typ. Max. Unit V OS I SB V SP V NB Operating supply voltage Standby current Regulator set-point Generator output, no battery T case = +25 C to =150 C 8 Vov V T case = -40 C to +25 C 10 Vov V V GO = 12.6V; T case = 25 C; 10kΩ V GO to TS; F+, G & Tab (Slug) Grounded; L, DF, & P unconnected; Regulator NOT Activated. 300 μa 10kΩ between V GO and TS Curve shown in Figure 3 NTC thermistor with R 25 C = 10kΩ; T j = 90 C No battery, I OUT = 2A to 50% Max. Load Curves shown in Figure 4 (with MURATA NTC NTH4G39A1) V SP - 2 V SP + 2 T C Thermal compensation V GO Curves shown in Figure 4 and 5 V LR Load regulation 6500 grpm, 10% to 95% load 300 mv V 4/10

5 Electrical specifications Table 5. V SR Speed regulation 15A load, 2000 to 20,000 grpm 100 mv V F-ON V F-ON Output saturation voltage Output saturation voltage I F = 6A, V GO = 14.0V, T case = 25 C I F = 5A, V GO = 13.5V, T case = 125 C I F-LIM Field limit current (1) Current F+ Terminal to T case 25 C I F-LIM Field limit current 1 Current F+ Terminal to T case = +150 C I G-MIN Electrical characteristcs (continued) (T case = -35 C to +150 C continuous unless otherwise specified) Symbol Parameter Test condition Min. Typ. Max. Unit Min. generator current load Current generator output 750 mv 850 mv 9.0 A 6.0 A 0.5 A V D-F Field discharge diode I F = 6A, T case = 25 C 1.85 V I D-R Diode reverse current V R = 20V 1 ma F OSC Oscillation frequency During LRC operation Hz V DF DF saturation voltage I DF 10mA 0.8 V I DF-LK DF output leakage current V DF < 25V 10 μa F TURBO Internal clock frequency V DF = 32-35V; at 2.2kΩ 4X Hz 1. The Field Drive capability shall not decrease as a function of temperature between 25 C and 150 C, at a rate faster than A/ C (for example, Field Drive shall be capable of 7.2A at 100 C). Figure 3. Set-point voltage vs. mounting tab temperature (10kΩ between V GO and TS) Volts Junction Temp 5/10

6 Electrical specifications Figure 4. Set-point voltage vs. thermistor temperature, T j = 90 C (Not guaranteed by testing, depending on NTC characteristics) Volts NTC Temp Figure 5. Set-point voltages vs. mounting tab temperature (TS-Open) Set Voltage Temp Table 6. Diagnostic (T case = -35 C to +150 C unless otherwise specified) Symbol Parameter Conditions Min. Typ. Max. Units V OV Over voltage V SP + 1 V SP V SP + 2 V V UV Under voltage F P > F P-LRC, 10kohm between S_term and V GO V V L-SAT Lamp ON saturation voltage I L = 0.5A (sinked by ASVR) >V L-ACT V V L-SAT-BO Lamp ON voltage (1) I L < 0.5A, VGO = Open; T case = -35 C to 85 C V V L-RLY Lamp OFF (Relay Drive) saturation voltage (vs. B+) I L = 750mA (Sourced by ASVR) (2) T case < 125 C 1.85 V T DELAY Fault Indication Delay Time Delay before Lamp ON s 1. 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. 2. When no fault is detected the Lamp terminal is pulled up by ASVR. 6/10

7 Electrical specifications Table 7. Fault indication Conditions TDelay? Initial KEY-ON Bulb and Wiring Check (Lamp ON for 1 sec ± 15% after initial KEY- ON) V GO > V OV V P < V P-F AND V GO < V SP F P < F V P-TR No connection between battery and V GO At start: Lamp ON until F P >F P-IR AND V P >V P-F. i.e. until V P reaches 8V. No Yes Yes Yes No No Table 8. Regulation characteristics Symbol Parameter Conditions Min. Typ. Max. Unit V L-PD L terminal regulator activate threshold VGO=12.6V V I L-PD V P-IR I P F P-IR F P-TR IRD FSDC L terminal pull down current Initiate regulation phase voltage threshold Phase terminal current sink Initiate regulation phase frequency Terminate regulation phase frequency Initiate regulation delay Field strobe duty cycle V L = V L-ACT VGO=12.6V ma Regulator Activated V V P > 1.5V and < 12.6V VGO = 12.6V Regulator Activated, V P-IR AND F P-IR Conditions Met First Time. Regulator Activated AND (Regulation Terminated OR Regulation NOT Initiated) ma Hz Hz s % LRC Load response control rate Field Drive Duty Cycle Increase %/s F P-LRC LRC transition frequency LRC Enabled if F P < F P-LRC Hz SS Soft-start LRC enabled until V SP reached regardless other conditions %/s 7/10

8 Package information 3 Package information In order to meet environmental requirements, ST (also) offers these devices in ECOPACK packages. ECOPACK packages are lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: Figure 6. Multiwatt8 mechanical data and package dimensions mm inch DIM. MIN. TYP. MAX. MIN. TYP. MAX. A B C E F G G H H L L L L L S S U Z Dia OUTLINE AND MECHANICAL DATA Multiwatt8 (Pin 5 GND) F 8/10

9 Revision history 4 Revision history Table 9. Document revision history Date Revision Changes 20-May Initial release. 24-Oct Document reformatted. "Added ECOPACK mention" in Section 3: Package information. 9/10

10 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ( ST ) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners 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 10/10

L9914. All silicon voltage regulator. Features. Description. Multiwatt8

L9914. All silicon voltage regulator. Features. Description. Multiwatt8 All silicon voltage regulator Features High side field driver Thermal protection Field driver short circuit protection RVC interface Overvoltage protection Complex diagnostics Load Response Control LRC