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L5954
Multiple multifunction voltage regulator for car radio
Features
5 regulators: - 10 V (350 mA) - 8.5 V (175 mA) - 5 V (350 mA) - 5 V (250 mA) - 8 V/10 V (1 A) All regulators are low dropout 3 high side drivers: - 2 A (HSD1) - 0.45 A (HSD2 and HSD3) No external charge pump capacitors are required Standby 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 Device summary
Order code L5954 Package Multiwatt15 Packing Tube Multiwatt15

Description
The L5954 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.

Table 1.
July 2010
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Contents
L5954
Contents
1 2 Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 2.2 2.3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.1.6 3.1.7 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Current limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Short circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Overvoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Write mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Chip address byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Data byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 5
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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L5954
List of tables
List of tables
Table 1. Table 2. Table 3. Table 4. Table 5. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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List of figures
L5954
List of figures
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pins connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Definition of timing on the I2C bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Typical application circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Multiwatt15 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 13
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L5954
Block and pins connection diagrams
1
Block and pins connection diagrams
Figure 1.
BAT GND REG 1 10V 350mA REG1
Block diagram
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
Figure 2.
Pins connection (top view)
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
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Electrical specifications
L5954
2
2.1
Electrical specifications
Absolute maximum ratings
Table 2.
Symbol VS VS Vin Vout Top Tstg
Absolute maximum ratings
Parameter DC operating supply voltage Transient supply overvoltages, Input voltages (EN, SDA, SCL) Output control voltage Operating temperature range Storage temperature range rise time = 10 ms delay time = 115 ms 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
2.2
Thermal data
Table 3.
Symbol Rth j-case
Thermal data
Parameter thermal resistance junction-to-case Value 2 Unit C/W
2.3
Table 4.
Symbol Iq,ST-BY
Electrical characteristics
Refer to the application circuit, VS = 14.4 V; Tamb = 25 C; unless otherwise specified. Electrical characteristics
Parameter Standby quiescent current Test Condition All outputs off, VBAT = 14 V VBAT = 14 V, IREG1 = 350 mA, IREG2 = 175 mA, IREG3 = 350 mA, IREG4 = 1 A, IREG5 = 250 mA, IHSD1 = 2 A, IHSD2,3 = 450 mA VBAT = 14 V, Enable 2 V VBAT = 14 V, Enable 0.8 V VBAT = 14 V, VIL VBAT = 14 V, VIH Min. Typ. Max. 2 Unit A
Iq
Maximum quiescent current
-
-
150
mA
IEN VIL, VIH
Enable input current Enable threshold voltage
-10 2
-
10 0.8
A V
10 V / 350 mA Reg 1 output VREG1 Output voltage IREG1 = 350 mA 11 V VCC 16 V 9.50 10 10.5 V
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L5954 Table 4.
Symbol Vline Vload
Electrical specifications Electrical characteristics (continued)
Parameter Test Condition 11 V VCC 26 V (Measure VREG1 across VCC range) 5 mA IREG1 350 mA (Measure VBAT- VREG1 when VREG1 drops 0.1 V) IREG1 = 350 mA IREG1 = 5 mA fo = 1 kHz, VBAT = 14 V with 1Vpp AC IREG1 = 175 mA Min. Typ. Max. Unit
Line regulation Load regulation
-
-
55 55
mV mV
Dropout voltage (measure VBATVDROPOUT VREG1 when VREG1 drops 0.1 V) Ilim1 SVR Current limit Ripple rejection
-
-
900 300 1.1 -
mV mV A dB
0.51 50
-
8.5 V / 175 mA Reg 2 output VREG2 Output voltage IREG2 = 175 mA 9.5 V VBAT 16 V 9.5 V VBAT 26 V (Measure VREG2 across VBAT Range) 5 mA IREG2 175mA (Measure VBAT- VREG2 when VREG2 drops 0.1 V) IREG2 = 175 mA IREG2 = 5 mA fo = 1 kHz, VBAT = 14 V with 1 Vpp AC IREG2 = 100 mA 8.0 8.5 9.0 V
Vline Vload
Line regulation Load regulation
-
-
50 50
mV mV
VDROPOUT Dropout voltage
-
-
900 300 525 -
mV mV mA dB
Ilim2 SVR
Current limit Ripple rejection
280 50
-
5 V / 350 mA Reg 3 output VREG3 Vline Vload Voltage offset from VREF Line regulation Load regulation 7 V VBAT 26 V (Measure VREG3 across VBAT range) 5 mA IREG3 350 mA (Measure VBAT- VREG3 when VREG3 drops 0.1 V) IREG3 = 175 mA IREG3 = 5 mA fo = 1 kHz, VBAT = 14 V with 1 Vpp AC, IREG3 = 175 mA 10 40 50 100 mV mV mV
VDROPOUT
Dropout voltage (Measure VBATVREG3 when VREG3 drops 0.1V) Current limit Ripple rejection
-
-
950 600 1 -
mV mV A dB
Ilim3 SVR
0.5 50
-
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Electrical specifications Table 4.
Symbol
L5954
Electrical characteristics (continued)
Parameter Test Condition Min. Typ. Max. Unit
8/10 V/1 A Reg 4 output IREG4 = 1 A b5 = 0 b5 = 1 11 V VBAT 26 V, b5 = 1 (Measure VREG2 across VBAT Range) 5 mA IREG4 1 A (Measure VBAT- VREG2 when VREG2 drops 0.1 V) IREG4 = 1 A IREG4 = 5 mA fo = 1 kHz, VBAT = 14 V with 1 Vpp AC, IREG4 = 500 mA
VREG4
Output voltage
7.6 9.50 -
8 10 -
8.4 10.5 50 150
V V mV mV
Vline Vload
Line regulation Load regulation
VDROPOUT Dropout voltage
-
-
950 600 2.4 -
mV mV A dB
Ilim4 SVR
Current limit Ripple rejection
1.3 50
-
5 V/250 mA Reg 5 output VREG5 Vline Vload Output voltage Line regulation Load regulation IREG5 = 250 mA 7 V VBAT 26 V (Measure VREG5 across VBAT Range) 5 mA IREG5 250 mA (Measure VBAT- VREG5 when VREG5 drops 0.1 V) IREG5 = 250 A IREG5 = 5 mA fo = 1 kHz, VBAT = 14 V with 1Vpp AC, IREG5 = 125 mA 4.6 5 5.4 40 100 V mV mV
VDROPOUT Dropout voltage
-
-
1.6 1.2 700 -
V V mA dB
Ilim5 SVR 2 A HSD1 Vsat Ileak1 Ilim
Current limit Ripple rejection
320 50
-
Output saturation voltage Output leakage current Current limiting
IHSD1 = 1 A continuous time operation All driver outputs are off RHSD1 = 0.5
-50 2.4
-
0.5 50 4
V A A
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L5954 Table 4.
Symbol
Electrical specifications Electrical characteristics (continued)
Parameter Test Condition Min. Typ. Max. Unit
0.45A HSD2 and HSD3 Vsat Ileak2,3 Ilim Output saturation voltage Output leakage current Current limiting IHSD2,3 = 300 mA Continuous time operation All driver outputs are off RHSD2,3 = 0.5 -50 0.56 0.6 50 1 V A A
Characteristics for I2C VIL VIH VHYS VOL1 VOL2 II fSCL Low level input voltage High level input voltage Input hysteresis Low level output Input current SCL clock frequency Sink current = 3 mA Sink current = 6 mA 0.4 V VI 0.9 VDDmax 3 0.2 -10 1.5 0.4 0.6 10 400 V V V V V A kHz
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Functional description
L5954
3
Functional description
The three high side drivers are a 2.0 A output (HSD1), and two 450 mA outputs (HSD2 and 3). The five regulator outputs are a 10 V at 350 mA (REG1), an 8.5 V at 175 mA (REG2), a 5 V at 350 mA (REG3), an 8 V/1 0V at 1 A (REG4), and 5 V at 250 mA (REG5). The regulators are low dropout. The regulators will operate with output capacitors with ESR of 0.1 to 5 . REG3 is referenced from the VREF input not the internal bandgap. This is done to minimize the voltage offset between individual 5 V 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 0.2 V. The output voltage of REG4 is selected via bit 5 of the I2C data byte: 8 V is the output voltage if bit5 = '0' while 10 V 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 100 kHz to 400 kHz. This device should be capable of operating at any frequency within this range.
3.1
Protection
The L5954 can survive under the following conditions: shorting the outputs to BAT and GND, loss of BAT, loss of IC GND, double battery, ESD, 34V load dump. L5954 will not handle a reverse battery condition. External components must be implemented for reverse battery protection.
3.1.1
Thermal shutdown
REG1, REG2, REG3, REG4, REG5 outputs shutdown at 160 C and return to normal operation at 130 C. The HSD2 and HSD3 shutdown at 160 C and return to normal operation at 130 C. The HSD1 with go into thermal shutdown at 170 C and returns to operation at 120 C.
3.1.2
Current limiting
Each voltage regulator will contain its own current protection.
3.1.3
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.
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L5954
Functional description
3.1.4
Overvoltage
The IC will not operate if the BAT voltage reaches 27 V typ. or above.
Figure 3.
Definition of timing on the I2C bus.
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
Figure 4.
EN FBATT
Typical application circuit.
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 C6 10F REG1
0.1F
SCL SDA GND
HSD1 HSD2 HSD3
D99AU1010A
(*) ESR of output capacitors should be between 0.1 and 5.0.
3.1.5
Write mode
CHIP ADDRESS DATA BYTE 0 MSB LSB A MSB A .. LSB .. P
S
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.
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Functional description
L5954
3.1.6
Chip address byte
Chip address A7 0 A6 0 A5 0 A4 1 A3 0 A2 0 A1 0 Read/write A0 0
3.1.7
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 8 V and a '1' corresponds to 10 V.
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L5954
Package information
4
Package information
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. Figure 5.
DIM. A5 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 4.73 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 5.43 2.6 2.6 3.85 0.862 0.854 0.695 0.679 0.406 0.104 0.167 0.186 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.87 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 0.214 0.102 0.102 0.152 0.050 0.700 2.65 1.6 0.039 0.022 0.030 0.060 0.710
Multiwatt15 (vertical) mechanical data and package dimensions
mm MIN. TYP. MAX. MIN. inch TYP. MAX. 0.197 0.104 0.063
OUTLINE AND MECHANICAL DATA
Multiwatt15 (Vertical)
0016036 J
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Revision history
L5954
5
Revision history
Table 5.
Date 09-Jul-2010
Document revision history
Revision 1 Initial release. Changes
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L5954
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