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L5961 Datasheet(PDF) 1 Page - STMicroelectronics

Part # L5961
Description  MOST power management device (PMD)
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5961 Datasheet(HTML) 1 Page - STMicroelectronics

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Data Brief
For further information contact your local STMicroelectronics sales office.
January 2008
Rev 1
1/7
7
L5961
MOST power management device (PMD)
Features
5V or 3.3V / 650mA DC-DC Converter with
external sync
5V or 3.3V/ 40mA standby voltage regulator
5V or 3.3V / 60mA switchable voltage regulator
Very low quiescent current (zero power mode
and ultra zero power mode feature)
Power management fully compatible to MOST
specification
Provides power supply for physical layer and
control unit
Switch to power pulse generator
Reacts on four different wake-up events
Switch to power pulse (STPP)
Light ON (for status)
Activity on Diagnostic_I/O
ON/OFF switch
I2C interface
Programmable system configuration
Reset generator
Intrinsic diagnostic transceiver
(standard LIN2.0)
3 battery detectors for battery voltage
monitoring
Watchdog circuit
PowerSS0-36 and PowerSO-36 packages
options
Description
The L5961 MOST PMD integrates all the discrete
circuitry usually necessary to implement power
supplies and power management for a MOST
node. It includes intrinsic MOST specific power
management together with sophisticated
diagnostic and fail-safe functions. The MOST
PMD is designed to provide direct power supply
for the physical layer, the Network Controller and
the External Host Controller of a MOST Node.
The L5961 also allows the implementation of a
generic MOST node design that can be
reproduced "as is" in any other project, thus
avoiding the activities of redesign and re-
verification of MOST PMD compliance
The L5961 implements complete monitoring of
the supply voltage (over-voltage, under-voltage,
critical voltage), moreover it supports multiple
power modes like Zeropower-mode (where one
complete MOST node sinks around 25µA current)
and Ultra-zero power mode (5µA). All the
diagnostic protocols from major carmakers are
supported and the device reacts to many different
wake-up events.
The L5961 is completely configurable through its
I2C bus and fully compatible with MOST
specifications.
L5961 has been specified in cooperation with
SMSC and represents a "chipset" solution when
used with SMSC's MOST network interface
controllers (INIC or NIC).
Table 1.
Device summary
Order code
Package
Packing
L5961
PowerSSO-36
Tube
L5961PD
PowerSO-36
Tube
PowerSO-36
PowerSSO-36
www.st.com


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