L4954 QUAD MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO 4 REGULATORS 10V (40mA); 8.5V (175mA); 5V (650mA); 5V (100mA) STANDBY 10V AND 5V STAND BY REGULATORS ARE LOW DROPOUT OUTPUTS 3 HIGH SIDE DRIVERS: 2A (HSD1), 0.3A (HSD2 & HSD3) NO EXTERNAL CHARGE PUMP CAPACITORS ARE REQUIRED STAND BY MODE CONTROLLED BY 3 INPUT PINS: EN1 FOR REG1, REG2, REG3 AND HSD1, EN2 FOR HSD2, AND EN3 FOR HSD3 INDIVIDUAL THERMAL SHUTDOWN LOGIC OUTPUTS FOR SUPPLY UNDERVOLTAGE: (LVWARN, RESET) INDEPENDENT CURRENT LIMITING OVERVOLTAGE SHUTDOWN SHORT CIRCUIT PROTECTION LOAD DUMP PROTECTION AND OVERVOLTAGE SHUTDOWN DESCRIPTION L4954 is a quad output voltage regulator and a Multiwatt15 ORDERING NUMBER: L4954 three output high side driver. The IC includes monitoring circuitry to warn the microprocessor of a low voltage condition: the LVWarn, output, sensing the slow dropping of STCAP pins voltage, gives the microprocessor time to store data. A RESET output is generatedat REG4’s decay. External protection must be provided for reverse battery protection. BLOCK DIAGRAM VS REG1 10V, 40mA 10V-REG1 VOLTAGE REFERENCE REG2 8.5V, 175mA 8.5V-REG2 CURRENT LIMIT REG3 5V, 650mA 5V-REG3 RESET LVW REG4 5V, 100mA 5V-REG4-STBY STCAP RESET LVWarn EN1 OUTPUT CONTROL HSD1 2.0A HSD1 EN2 THERMAL SHUTDOWN HSD2 0.3A HSD2 EN3 OVERVOLTAGE PROTECTION HSD3 0.3A HSD3 GND D95AU346 June 2000 1/7 L4954 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VS DC Operating Supply Voltage -0.6 to 26.5 V VS Transient Supply Overvoltages, rise time = 10ms delay time = 115ms 34 V Overvoltage Shutdown 27 V V VS,ovs Vin Input Voltages (EN1, EN2, EN3) -0.6 to 6.0 V out Output Voltages (LVWarn, RESET) -0.6 to 6.0 V Top Operating Temperature Range -40 to 85 °C Tstg Storage Temperature Range -40 to 150 °C Value Unit 2 °C/W PIN CONNECTION 15 10V REG1 14 8.5V REG2 13 5V REG3 12 EN3 11 EN2 10 EN1 9 RESET 8 GND 7 LVWarn 6 5V REG4-STBY 5 ST CAP 4 HSD3-0.3A 3 HSD2-0.3A 2 VS 1 HSD1-2A TAB CONNECTED TO PIN 8 D95AU347 THERMAL DATA Symbol Rth j-case Parameter Thermal Resistance Junction-case APPLICATION CIRCUIT +VS 1000µF EN1 10 EN2 11 EN3 12 HSD1 1 HSD2 3 0.1µF 2 15 10V-REG1 10µF(*) 14 8.5V-REG2 10µF(*) 13 5V-REG3 10µF(*) L4954 6 5V-REG4 -STBY 10µF(*) HSD3 4 STCAP 5 47KΩ 47KΩ 7 8 LVWarn 9 470µF RESET 0.1µF 0.1µF D95AU348C (*)ESR of output capacitors should be between 0.2Ω to 5.0Ω 2/7 L4954 ELECTRICAL CHARACTERISTICS (Refer to the application circuit, V S = 14.4V; Tamb = 25°C; IOUT10 = 5mA; IOUT8.5 = 5mA; IOUT5 = 5mA; IOUT5 ST-BY = 0.5mA; RHSD1 = 16Ω, RHSD2,3 = 107Ω, unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. 16 Unit VS Operating Supply Voltage Iq Maximum Quiescent Current IOUT10 = 40mA; IOUT8.5 = 175mA; IOUT5 = 650mA; IOUT5 ST-BY = 100mA; RHSD1 = 8Ω; R HSD2,3 = 53Ω 10 mA Standby Quiescent Current EN1, EN2, EN3 = 0 IOUT5, ST-BY = 50mA; 420 µA EN1, EN2, EN3 = 0 IOUT5, ST-BY = 2mA; 300 µA Iq,ST-BY 11 Max. V VENL EN1, EN2, EN3 Input Low Voltage 0 0.8 V VENH EN1, EN2, EN3 Input High Voltage (Outputs Active) 2 5 V 10V / 40mA REG 1 OUTPUT VOUT10 Output Voltage IOUT10 = 40mA 10 V ∆Vline Line Regulation VS = 11 to 26V 2 mV ∆Vload Load Regulation Iout10 = 5 to 40mA 2 mV VDROPOUT Dropout Voltage VS = VOUT10 + 0.1V Iout10 = 5mA 100 200 mV VS = VOUT10 + 0.5V Iout10 = 40mA 500 600 mV Iq1 Ilim1 SVR 1 Reg 1Quiescent Current IOUT10 = 5mA 7 mA IOUT10 = 40mA 7 mA 100 mA f = 0.12 to 10KHz; IOUT10 = 25mA; VRIP = 1Vpp 55 dB Current Limit Reg 1Supply Voltage Rejection 8.5V / 175mA REG 2 OUTPUT VOUT8.5 Output Voltage IOUT8.5 = 175mA 8.5 V ∆Vline Line Regulation VS = 11 to 26V 2 mV ∆Vload Load Regulation Iout8.5 = 5 to 175mA 10 mV VDROPOUT Dropout Voltage VS = VOUT8.5 + 0.3V Iout8.5 = 5mA 300 400 mV VS = VOUT8.5 + 1V Iout8.5 = 175mA 1 1.1 V IOUT8.5 = 5mA 7 mA IOUT8.5 = 175mA 7 mA 300 mA 55 dB Iq2 Ilim2 SVR 2 Reg 2 Quiescent Current Current Limit Reg 1Supply Voltage Rejection f = 0.12 to 10KHz; IOUT8.5 = 100mA; VRIP = 1Vpp 3/7 L4954 ELECTRICAL CHARACTERISTICS (Continued) Symbol Parameter Test Condition Min. Typ. Max. Unit 5V / 650mA REG 3 OUTPUT VOUT5 Output Voltage IOUT5 = 650mA 5 V ∆Vline Line Regulation VS = 7 to 26V 2 mV ∆Vload Load Regulation Iout5 = 5 to 650mA 9 VDROPOUT Dropout Voltage VS = VOUT5 + 0.3V Iout5 = 5mA 300 400 mV VS = VOUT5 + 1V Iout5 = 650mA 1 1.1 V IOUT5 = 5mA 7 mA 7 mA Iq3 Reg 3 Quiescent Current Ilim3 Current Limit IOUT5 = 650mA SVR 3 Reg 3 Supply Voltage Rejection mV 1.25 A f = 0.12 to 10KHz; IOUT5 = 325mA; VRIP = 1Vpp 55 dB 5 V mV 5V / 100mA STAND-BY REG 4 OUTPUT VOUT5STBY Output Voltage IOUT5STBY = 100mA ∆Vline Line Regulation VS = 7 to 26V 0.8 ∆Vload Load Regulation Iout = 0.5 to 100mA 3.5 VDROPOUT Dropout Voltage VS = VREG5STBY + 0.1V Iout5STBY = 5mA 100 200 mV VS = VREG5STBY + 0.5V Iout5STBY = 100mA 500 600 mV IOUT5STBY = 2mA 0.25 mA IOUT5STBY = 100mA 0.35 mA 190 mA Iq4 Reg 4 Quiescent Current Ilim4 Current Limit SVR 4 mV Reg 4 Supply Voltage Rejection f = 0.12 to 10KHz Iout5STBY = 50mA; VRIP = 1Vpp 55 dB Maximum Output Current Saturation Voltage R HSD1 = 8Ω 600 mV 2A HSD1 Vsat,peak Iq Quiescent Current 9 mA Ilim Current Limit R HSD1 = 0.5Ω 3.5 A Output Leakage Current All driver outputs are off 20 µA R HSD2,3 = 53Ω 150 mV Ileak1 0.3A HSD2 & HSD3 V sat Iq Quiescent Current 1.5 mA Ilim Current Limit R HSD2.3 = 0.5Ω 500 mA Output Leakage Current All driver outputs are off 10 µA Ileak2,3 4/7 Maximum Output Current Saturation Voltage L4954 ELECTRICAL CHARACTERISTICS (Continued) Symbol Parameter Test Condition Min. STCAP <7.5V; VIL = ”0” STCAP >7.5V VIH = ”1” C LVW = 0.1µF C LVW = 0.1µF 0 2.75 Typ. Max. Unit LVWARN OUTPUT THLVW VLVW trise tfall LVW Threshold on STCAP LVW Output Voltage LVW Output Rise Time LVW Output Fall Time 7.5 0.4 5 3.9 12.6 V V V ms µs RESET OUTPUT THRES VRES trise tfall Reset Threshold on Reg 4 Reset Output Voltage Reset Output Rise Time Reset Output Fall Time 4.5 Set VS so that VOUT5STBY <4.5V; VIL = ”0” Set VS so that VOUT5STBY is not less than normal REG4 output voltage; VIH = ”1” C RESET = 0.1µF C RESET = 0.1µF FUNCTIONAL DESCRIPTION The L4954 includes a monitoring circuit to warn the microprocessor if a low voltage or no voltage condition is occurring. When the voltage on the STCAP pin drops below 7.5V (typ), the LVW output will go low. This tells the microprocessor to stop executing code and save vital information. The reset output will go low when REG4 (5V-STBY) drops below (VREG4 250mV) or 4.75V is minimum value. The RESET output doesn’t go above 0.4V until REG4 has gone back above 4.75V (min). Any spike will tell the microprocessor to start operating. Once the STCAP line passes 7.5V (typ), the LVWarn output will also return to high state. The STCAP pin acts like a delay circuit. Due to the large capacitor (470µF), the STCAP pin al- 0 0.4 V V 2.75 5 V 4.5 37 ms µs lows the battery voltage to decay slowly giving the microprocessor time to store data. Also, during short low voltage or negative voltage conditions, the STCAP pin protects the 5V STBY output from dropping below the RESET and LVW trip points. The four outputs are expected to follow the battery voltage down to 11V for REG1, 9V for REG2, 6V for REG3 and REG4. The L4954 has a STBY mode to keep the microprocessor and memories alive during an ignition off conditions. The EN1 input pin is controlled by the microprocessor. A high on the EN1 input turns on REG1, REG2, REG3, and HSD1. A Low on EN1 places the part in stand-by mode with REG4 on. The High side driver outputs HSD2 and HSD3 are controlled by EN2 and EN3 respectively: a Low on the control input turns the corresponding high side driver off. TIMING DIAGRAM 7.5 7.5 STCAP (V) 0 TIME 4.75 4.75 5 REG4 (V) TIME 0 5 LVWarn (V) TIME 5 RESET (V) 0.4 D95AU349A TIME 5/7 L4954 DIM. MIN. mm TYP. A B C D E F MAX. MIN. 1 0.49 0.66 1.02 17.53 19.6 L L1 21.9 21.7 L2 L3 L4 L7 1.27 17.78 MAX. 0.197 0.104 0.063 5 2.65 1.6 G G1 H1 H2 OUTLINE AND MECHANICAL DATA 0.039 0.55 0.75 0.019 0.026 1.52 18.03 0.040 0.690 0.772 0.022 0.030 0.050 0.700 20.2 0.060 0.710 0.795 22.2 22.1 22.5 22.5 0.862 0.854 17.65 17.25 10.3 2.65 17.5 10.7 18.1 17.75 10.9 2.9 M M1 4.25 4.63 4.55 5.08 S S1 Dia1 1.9 1.9 3.65 6/7 inch TYP. 0.874 0.870 0.886 0.886 0.695 0.679 0.406 0.104 0.689 0.421 0.713 0.699 0.429 0.114 4.85 5.53 0.167 0.182 0.179 0.200 0.191 0.218 2.6 2.6 3.85 0.075 0.075 0.144 0.102 0.102 0.152 Multiwatt15 V L4954 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. Specification 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 2000 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 7/7