flpwrmanag0910

Automotive infotainment power
management
STMicroelectronics
Multifunction voltage regulators for car radio and infotainment
Automotive-qualified voltage
regulators are designed to supply
all functions of a modern car
radio, from the tuner to the CDROM, from the microcontroller
to the USB port. These multiregulators can integrate, in a
single package, DC-DC converters
(to supply devices which require
high currents), linear regulators
(available at different voltages),
high-side drivers and standby
regulators. The different packages,
a full set of protection functions
required by the automotive field,
possible digital control through the
I²C bus, direct connection to the
battery and low quiescent current
make them suitable for many other
automotive applications, such as
navigation systems, dashboards
and infotainment in general.
Key features
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DC-DC converters
Linear regulators
Standby regulators
High-side drivers
Very low quiescent current
Very low stand-by current
HW enable or I²C bus control
Short-circuit protection
Load-dump protection
Thermal protection
Reverse-battery protection
Overcurrent/overvoltage protection
Resets and low-voltage warnings
Battery monitors
Key benefits
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One IC can supply a multitude of
devices, allowing space saving and
very compact solutions
Flexibility due to the programmability
of regulators
Designed for automotive sector,
with all required protection functions
embedded, no need for external
components
Automotive qualification
Targeted applications
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Car radio
Infotainment
www.st.com/automotive
Application example
Filter
Optical
drive
Battery
USB
DC-DC
ST-BY
µC
Linear1
Sound
processor
Linear2
Navigation
system
L5962
I²C bus
HSD1
Display
HSD2
Tuner
Aux 1
Aux 2
Support material
Documentation and demonstration boards, including software when needed, are available for each voltage regulator.
Device summary
Part number
Features
Linear
regulators
Standby
regulators
DC-DC
regulators
High-side
drivers
L4943
Back-up and reset
2
1
1
L4953G
Back-up, reset, ignition comparator, LVW (low-voltage warning)
2
1
1
L5950
Very low standby current and I²C
5
L5951
IDR J1850 interface, current/voltage limiter
1
2
L5952
I²C bus and adjustable battery detection
4
1
L5954
Very low standby current and I²C
5
L5955
I²C bus and LVW
5
2
3
L5956
Ignition comparator, 3.3 V regulation with independent enable
3
1
1
L5957
Ignition comparator, 5 V regulation (CAN) with independent enable
3
1
1
L5958
Reset, LVW
4
2
1
L5959
Very low standby current, reset, hold and backup
3
1
2
L5961
MOST power management with I²C
1
1
1
L5962
DC-DC plus switchable linear regulators with I²C bus
2
1
1
3
1
3
2
© STMicroelectronics - October 2010 - Printed in Italy - All rights reserved
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All other names are the property of their respective owners
Order code: FLPWRMANAG0910
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