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L5950
MULTIPLE MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
5 REGULATORS 10V (350mA); 8.5V (175mA); 5V (350mA); 5V (250mA); 8V/10V (1A) ALL REGULATORS ARE LOW DROPOUT OUPUTS 3 HIGH SIDE DRIVERS: 2A (HSD1), 0.45A (HSD2 & HSD3) NO EXTERNAL CHARGE PUMP CAPACITORS ARE REQUIRED STAND BY MODE CONTROLLED BY 3 INPUT PINS: ENABLE FOR REG2 AND REG3, I2C BUS FOR REG1, REG4, REG5, HSD1, HSD2, HSD3 INDIVIDUAL THERMAL SHUTDOWN INDEPENDENT CURRENT LIMITING SHORT CIRCUIT PROTECTION LOAD DUMP PROTECTION AND OVERVOLTAGE SHUTDOWN ESD PROTECTED BLOCK DIAGRAM
BAT GND
Multiwatt15
DESCRIPTION The ASPM (Audio System Power Module) is an integration of three high side drivers and five regulators developed to provide the power for an audio system. The outputs of the IC are controlled via the I2C bus and the Enable input. External protection must be provided for reverse battery protection.
REG 1 10V 350mA
REG1
VOLTAGE REFERENCE
REG 2 8.5V 175mA
REG2
VREF 8.5 & 5V ENABLE
REG 3 5V 350mA
REG3
ENABLE
SCL PC OUTPUT CONTROL SDA
REG 4 8V/10V 1A
REG4
REG 5 5V 250mA
REG5
CURRENT LIMIT PROTECTION LOGIC INDIVIDUAL THERMAL SHUTDOWN OVERVOLTAGE PROTECTION
DRIVE 1 2A
HSD1
DRIVE 2 450mA
HSD2
DRIVE 3 450mA
HSD3
D99AU1002
March 2001
1/8
L5950
ABSOLUTE MAXIMUM RATINGS
Symbol VS VS Vin Vout Top Tstg Parameter DC Operating Supply Voltage Transient Supply Overvoltages, rise time = 10ms delay time = 115ms Input Voltages (EN, SDA, SCL) Output Control Voltage Operating Temperature Range Storage Temperature Range Value -0.6 to 26.5 34 -0.6 to 9 -0.6 to 6.0 -40 to 85 -40 to 150 Unit V V V V C C
PIN CONNECTION
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
REG4 BAT REG5 REG3 REG2 REG1 VREF GND SCL Enable SDA HSD3 HSD2 BAT HSD1
D99AU1006
THERMAL DATA
Symbol Rth j-case Parameter Thermal Resistance Junction-case Value 2 Unit C/W
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L5950
ELECTRICAL CHARACTERISTICS (Refer to the application circuit, VS = 14.4V; Tamb = 25C; unless otherwise specified.)
Symbol Iq,ST-BY Iq Parameter Standby Quiescent Current Maximum Quiescent Current Test Condition All Outputs Off, VBAT = 14V VBAT = 14V, IREG1 = 350mA, IREG2 = 175mA, IREG3 = 350mA, IREG4 = 1A, IREG5 = 250mA, IHSD1 = 2A, IHSD2,3 = 450mA VBAT = 14V, Enable 2V VBAT = 14V, Enable 0.8V VBAT = 14V, VIL VBAT = 14V, VIH IREG1 = 350mA 11V VCC 16V 11V VCC 26V (Measure VREG1 Across VCC Range) 5mA IREG1 350mA (Measure VBAT- VREG1 when VREG1 drops 0.1V) IREG1 = 350mA IREG1 = 5mA 0.51 fo = 1kHz, VBAT = 14V with 1Vpp AC IREG1 = 175mA IREG2 = 175mA 9.5V VBAT 16V 9.5V VBAT 26V (Measure VREG2 Across VBAT Range) 5mA IREG2 175mA (Measure VBAT- VREG2 when VREG2 drops 0.1V) IREG2 = 175mA IREG2 = 5mA 280 fo = 1kHz, VBAT = 14V with 1Vpp AC IREG2 = 100mA 50 50 Min. Typ. Max. 2 150 Unit A mA
IEN
Enable Input Current
10 -10 0.8 2 9.50 10 10.5 55
A A V V V mV
VIL, VIH
Enable Threshold Voltage
10V/350mA REG 1 OUTPUT VREG1 Vline Output Voltage Line Regulation
Vload VDROPOUT
Load Regulation Dropout Voltage (Measure VBAT- VREG1 when VREG1 drops 0.1V) Current Limit Ripple Rejection
55
mV
900 300 1.1
mV mV A dB
Ilim1 SVR
8.5V/175mA REG 2 OUTPUT VREG2 Vline Output Voltage Line Regulation 8.3 8.5 8.7 50 V mV
Vload VDROPOUT
Load Regulation Dropout Voltage
50
mV
900 300 525
mV mV mA dB
Ilim2 SVR
Current Limit Ripple Rejection
5V/350mA REG 3 OUTPUT VREG3 Vline Voltage Offset from VREF Line Regulation 7V VBAT 26V (Measure VREG3 Across VBAT Range) 5mA IREG3 350mA 10 40 40 mV mV
Vload
Load Regulation
100
mV
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L5950
ELECTRICAL CHARACTERISTICS (continued)
Symbol VDROPOUT Parameter Dropout Voltage (Measure VBAT- VREG3 when VREG3 drops 0.1V) Current Limit Ripple Rejection fo = 1kHz, VBAT = 14V with 1Vpp AC IREG3 = 175mA IREG4 = 1A b5 = 0 b5 = 1 11V VBAT 26V, b5 = 1 (Measure VREG2 Across VBAT Range) 5mA IREG4 1A (Measure VBAT- VREG2 when VREG2 drops 0.1V) IREG4 = 1A IREG4 = 5mA 1.3 fo = 1kHz, VBAT = 14V with 1Vpp AC IREG4 = 500mA IREG5 = 250mA 7V VBAT 26V (Measure VREG5 Across VBAT Range) 5mA IREG5 250mA (Measure VBAT- VREG5 when VREG5 drops 0.1V) IREG5 = 250A IREG5 = 5mA 320 fo = 1kHz, VBAT = 14V with 1Vpp AC IREG5 = 125mA IHSD1 = 1A Continuous Time Operation All Driver Outputs are Off RHSD1 = 0.5 IHSD2,3 = 300mA Continuous Time Operation All Driver Outputs are Off RHSD2,3 = 0.5 -50 0.56 -50 2.4 50 50 Test Condition (Measure VBAT- VREG3 when VREG3 drops 0.1V) IREG3 = 175mA IREG3 = 5mA 0.5 50 Min. Typ. Max. Unit
950 600 1
mV mV A dB
Ilim3 SVR
8/10V/1A REG 4 OUTPUT VREG4 Output Voltage 7.6 9.50 8 10 8.4 10.5 50 V V mV
Vline
Line Regulation
Vload VDROPOUT
Load Regulation Dropout Voltage
150
mV
950 600 2.4
mV mV A dB
Ilim4 SVR
Current Limit Ripple Rejection
5V/250mA REG 5 OUTPUT VREG5 Vline Output Voltage Line Regulation 4.75 5 5.25 40 V mV
Vload VDROPOUT
Load Regulation Dropout Voltage
100
mV
1.6 1.2 700
V V mA dB
Ilim5 SVR
Current Limit Ripple Rejection
2A HSD1 Vsat Ileak1 Ilim Vsat Ileak2,3 Ilim Output Saturation Voltage Output Leakage Current Current Limiting Output Saturation Voltage Output Leakage Current Current Limiting 0.5 50 4 0.6 50 1 V A A V A A
0.45A HSD2 & HSD3
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L5950
ELECTRICAL CHARACTERISTICS (continued)
Symbol VIL VIH VHYS VOL1 VOL2 II fSCL Input Current SCL Clock Frequency Parameter LOW Level Input Voltage HIGH Level Input Voltage Input Hysteresis LOW Level Output Sink Current = 3mA Sink Current = 6mA 0.4V VI 0.9VDDmax -10 3 0.2 0.4 0.6 10 400 Test Condition Min. Typ. Max. 1.5 Unit V V V V V A kHz CHARACTERISTICS FOR I2C
FUNCTIONAL DESCRIPTION The three high side drivers are a 2.0A output (HSD1), and two 450mA outputs (HSD2 & 3). The five regulator outputs are a 10V at 350mA (REG1), an 8.5V at 175mA (REG2), a 5V at 350mA (REG3), an 8V/10V at 1A (REG4), and 5V at 250mA (REG5). The regulators are low dropout. The regulators will operate with output capacitors with ESR of 0.1 to 5. The 8.5V regulator output (REG2) is a tighter tolerance output than the other regulator outputs. The 8.5V output is a 2.5% (5% total range) output over temperature. This is required on the regulator to improve performance and reduce cost on the 8.5V driven IC's in the radio. The tighter tolerance is possible by performing a trim of the bandgap reference to the 8.5V output. The other outputs are 5% variation over temperature. REG3 is referenced from the VREF input not the internal bandgap. This is done to minimize the voltage offset between individual 5V supplies. The REG2 and REG3 outputs are turned on and off with the Enable input, a '1' turns the outputs on and a '0' turns them off. When Enable is "1", the other outputs can be independently controlled via the I2C bus. When a given regulator is turned off it must be guaranteed to be lower than 0.2V. The output voltage of REG4 is selected via bit 5 of the I2C data byte: 8V is the output voltage if bit5 = '0' Figure 1. Definition of Timing on the I2C Bus.
while 10V is the output voltage when bit5 = '1'. When all outputs are turned off the total current draw must be minimized. I2C will run at a clock speed range of 100kHz to 400kHz. This device should be capable of operating at any frequency within this range. Protection The L5950 can survive under the following conditions: shorting the outputs to BAT and GND, loss of BAT, loss of IC GND, double battery(+26.5V), 4000V ESD, 34V load dump. L5950 will not handle a reverse battery condition. External components must be implemented for reverse battery protection. Thermal Shutdown: REG1, REG2, REG3, REG4, REG5 outputs shutdown at 160C and return to normal operation at 130C. The HSD2 and HSD3 shutdown at 160C and return to normal operation at 130C. The HSD1 with go into thermal shutdown at 170C and returns to operation at 120C. Current Limiting: each voltage regulator will contain its own current protection. Short Circuit: If the outputs are short circuited, the IC will go into current limiting and eventually the thermal shutdown will kick in. Current limiting will not disable the outputs. Overvoltage: The IC will not operate if the BAT voltage reaches 27V typ. or above.
SDA
tBUP tLOW
tR
tF
tHD;STA
tSP
SCL tHD;DAT P S tHD;DAT tHIGH tSU;DAT tSU;STA Sr
D99AU1007
tSU;STO P
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L5950
Figure 2. Typical Application Circuit.
EN FBATT
ENABLE BAT 1000F VREF VREF
REG1 REG2 REG3 REG4 REG5 REG5 C14 10F HSD1 HSD2 HSD3 REG4 C12 10F C10 10F REG3 C8 10F REG2
REG1
0.1F
C6 10F
SCL SDA GND
HSD1 HSD2 HSD3
D99AU1010A
(*) ESR of output capacitors should be between 0.1 and 5.0.
WRITE MODE:
CHIP ADDRESS S MSB 0 LSB A MSB LSB DATA BYTE A .. .. P
S = START condition - SDA goes from high to low while SCL is high A = Acknowledge - the device being written to, pulls down on data line (SDA) during the acknowledge clock pulse. P = STOP condition - SDA goes from low to high while SCL is high. CHIP ADDRESS BYTE:
CHIP ADDRESS A7 0 A6 0 A5 0 A4 1 A3 0 A2 0 A1 0 READ/WRITE A0 0
DATA BYTE:
DATA BYTE REG1 b7 b6 X R4 10V b5 REG4 b4 REG5 b3 HSD1 b2 HSD2 b1 HSD3 b0
Default mode is 0000 0000 which corresponds to all outputs being off, low power mode. Bit 5 Controls the output voltage of REG4. A '0' corresponds to 8V and a '1' corresponds to 10V.
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L5950
mm MIN. A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1 21.9 21.7 17.65 17.25 10.3 2.65 4.25 4.63 1.9 1.9 3.65 4.55 5.08 17.5 10.7 22.2 22.1 0.49 0.66 1.02 17.53 19.6 20.2 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.53 2.6 2.6 3.85 0.862 0.854 0.695 0.679 0.406 0.104 0.167 0.182 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.870 1.27 17.78 1 0.55 0.75 1.52 18.03 0.019 0.026 0.040 0.690 0.772 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.218 0.102 0.102 0.152 0.050 0.700 TYP. MAX. 5 2.65 1.6 0.039 0.022 0.030 0.060 0.710 MIN. inch TYP. MAX. 0.197 0.104 0.063
DIM.
OUTLINE AND MECHANICAL DATA
Multiwatt15 V
7/8
L5950
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 (c) 2001 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
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