OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

L9914B

P1-P3P4-P6P7-P9P10-P12
This is information on a product in full production.
September 2014 DocID12353 Rev 5 1/12
L9914
All silicon voltage regulator
Datasheet - production data
Features
High side field driver
Thermal protection
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)
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.
'!0'03
Multiwatt8
Table 1. Device summary
Order code Temp range, C Package Packing
L9914A T
j
= -40 to +150 Multiwatt8 Tube
L9914B T
j
= -40 to +150 Multiwatt8 Tube
L9914C T
j
= -40 to +150 Multiwatt8 Tube
www.st.com
Contents L9914
2/12 DocID12353 Rev 5
Contents
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 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4.1 Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4.2 Regulation feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DocID12353 Rev 5 3/12
L9914 List of tables
3
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 5. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 6. Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 7. Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 8. Regulation feature characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 9. Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
P1-P3P4-P6P7-P9P10-P12

L9914B

Mfr. #:
Buy L9914B
Manufacturer:
STMicroelectronics
Description:
Power Management Specialized - PMIC Car Alternator Reg Multifunction Volt
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet