List of figures L9914
4/12 DocID12353 Rev 5
List of figures
Figure 1. Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. Reverse B+ test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. Setpoint voltage vs. L terminal signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5. Multiwatt8 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
DocID12353 Rev 5 5/12
L9914 Schematic diagram and pin description
11
1 Schematic diagram and pin description
1.1 Schematic diagram
Figure 1. Schematic diagram
1.2 Pin description
Figure 2. Pin connection (top view)
Pin Function
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Table 2. Pin description
1 P Phase sense input
2F
M
Field monitor output
3 RESERVED Reserved
4 L Warning terminal output and ECM PWM input
5 GND Ground
6 RESERVED Reserved
7 F Field high side driver output
8V
GO
Generator output sense and voltage supply to L9914
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Electrical specifications L9914
6/12 DocID12353 Rev 5
2 Electrical specifications
2.1 Absolute maximum ratings
2.2 Absolute maximum ratings and operative range by pin
2.3 Thermal data
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
V
S
Transient supply voltage (load dump) 40 V
I
O
Output current capability Internally limited A
P
tot
Power dissipation (@T
j
= 150°C, I
Field
= 6 A) 6 W
V
REV
Reverse voltage (see Figure 1.) -2.5 to -6 V
Table 4. Absolute maximum ratings and operative range by pin
Pin # Name
Absolute maximum rating Operative range
Unit
Min. Max. Min. Max.
1 P -5 VGO+3V -1.5 20 V
2 FM -1.5 50 -1.5 18 V
3 RESERVED -0.3 7 must be connect to GND V
4 L -0.3 50 -0.3 18 V
5 GND - - - - -
6 RESERVED -0.3 7 must be connect to GND V
7 F -1.5 VGO -1.5 VGO V
8 VGO -2.5 50 8 18 V
Table 5. Thermal data
Symbol Parameter Value Unit
T
j
Junction temperature -40 to 150 °C
T
stg
Storage temperature -50 to 150 °C
T
sd
Thermal shut down 175 ±15 °C
R
th j-case
Thermal resistance junction to case 1.5 °C/W

L9914B

Mfr. #:
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

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