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Description

L5965 is a multiple voltage regulator composed by two battery compatible BUCK preregulators (one of which is a controller), two BUCK post regulators with internal

compensation, one BOOST, one LDO and a precise voltage reference regulator. All

the regulators, except the BUCK1 pre-regulator, have internal power switches.

OTP (One Time Programmable) cells are used for the main device parameters

programming (output voltages and currents, switching frequencies) and to configure

power up sequence.

An SPI interface can be used to enable or disable the single voltage regulators, for

diagnostic information and to program internal blocks parameters (monitor and

Power Good thresholds, slew rate, etc.).

The device offers a set of features to support applications that need to fulfill functional

safety requirements as defined by Automotive Safety Integrity Level (ASIL) A-B-C-D.

Features

? AEC-Q100 qualified

? Pre SMPS BUCK1 regulator controller, adjustable via OTP to 0.8 V, 1.0 V, 1.1 V,

1.2 V, 1.8 V, 3.3 V, 3.8 V, 5.0 V @ 0.4 MHz

? Pre SMPS BUCK2 regulator, adjustable via OTP to 1.0 V, 1.1 V, 1.2 V, 1.35 V,

1.5 V, 3.3 V, 3.6 V, 5.0 V @ 1.35/2.6 A min peak current limit, 0.4/2.4 MHz

? Post SMPS BUCK3 regulator, adjustable via OTP to 1.0 V, 1.2 V, 1.35 V, 1.8 V,

2.0 V, 2.3 V, 2.5 V, 3.3 V @ 1.4 A min peak current limit, 2.4 MHz

? Post SMPS BUCK4 regulator, adjustable via OTP to 1.1 V, 1.12 V, 1.2 V, 1.25 V,

1.3 V, 1.35 V, 1.8 V, 3.3 V @ 1 A min peak current limit, 2.4 MHz

? Post SMPS BOOST regulator, adjustable via OTP to 5.0 V @ 0.3 A max load

current, 7.0 V @ 0.2 A max load current, 2.4 MHz

? Post Linear regulator LDO, adjustable via OTP to 1.2 V, 1.25 V, 1.3 V, 1.8 V,

2.5 V, 2.8 V, 3.3 V, 5.0 V @ 300/600 mA max load current

? Precise Voltage reference, adjustable via OTP to 1.8 V, 2.5 V, 3.3 V,

4.1 V @ 20 mA max load current

? SPI interface with CRC

? Programmable slew rate/soft start

? Voltage supervisors

? Spread frequency spectrum

? Reset and reset activation list

? Adjustable window watchdog supervisors

? Power up phase programmable via OTP

? Short circuit protected outputs and Fault detection pin to Microcontroller

? Low external components number

? Thermal shutdown junction temperature 175 °C