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voltage regulator. L9914 Datasheet |
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L9914
All silicon automotive voltage regulator
Datasheet - production data
Field driver short circuit protection
RVC interface
Overvoltage protection
Complex diagnostics
Load response control
– LRC rate 2.5 s (L9914A, L9914C)
– LRC rate 5.0 s (L9914B)
'!0'03
Multiwatt8
Features
AEC-Q100 qualified
High side field driver
Thermal protection
Description
The L9914 is a monolithic multifunction generator
voltage regulator intended for use in automotive
applications.
This device regulates the output of an automotive
generator by controlling the field winding current
by means of a variable frequency PWM high side
driver.
The setpoint voltage reference is selected by the
engine control unit (ECU) via RVC protocol.
Order code
L9914A
L9914B
L9914C
Table 1. Device summary
Temp range, C
Package
Tj = -40 to +150
Tj = -40 to +150
Tj = -40 to +150
Multiwatt8
Multiwatt8
Multiwatt8
Packing
Tube
Tube
Tube
April 2018
This is information on a product in full production.
DocID12353 Rev 6
1/13
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Contents
Contents
L9914
1 Schematic diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Absolute maximum ratings and operative range by pin . . . . . . . . . . . . . . . 6
2.3 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5.1 Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5.2 Regulation feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Multiwatt 8 (pin 5 GND) package information . . . . . . . . . . . . . . . . . . . . . . 10
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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L9914
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Absolute maximum ratings and operative range by pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Regulation feature characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Multiwatt 8 (pin 5GND) package mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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