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L5954

P1-P3P4-P6P7-P9P10-P12P13-P15
July 2010 Doc 17717 Rev 1 1/15
1
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
–I
2
C 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
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 I
2
C
bus and the Enable input.
External protection must be provided for reverse
battery protection.
Multiwatt15
Table 1. Device summary
Order code Package Packing
L5954 Multiwatt15 Tube
www.st.com
Obsolete Product(s) - Obsolete Product(s)
Contents L5954
2/15 Doc 17717 Rev 1
Contents
1 Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.1 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.2 Current limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.3 Short circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.4 Overvoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1.5 Write mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1.6 Chip address byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.7 Data byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Obsolete Product(s) - Obsolete Product(s)
L5954 List of tables
Doc 17717 Rev 1 3/15
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Obsolete Product(s) - Obsolete Product(s)
P1-P3P4-P6P7-P9P10-P12P13-P15

L5954

Mfr. #:
Buy L5954
Manufacturer:
STMicroelectronics
Description:
LDO Voltage Regulators MULTIFUNCTIONAL VOLTAGE REGULATO MULTIWATT 15L SPLIT VERT.
Lifecycle:
New from this manufacturer.
Delivery:
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