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L9474

Notes:

1. 16 Volts is the maximum operating voltage.

2. Stand-by current measured with L, FM open; F connected to gnd; P open or tied to gnd.

3. When the voltage sensed at VGO terminal is above VOV the Minimum Field Duty-Cycle will be 0 %.

Figure 4. Reverse B+ Test Circuit

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Operating Supply Voltage

8

V

400

µA

1mA

Regulator Set-Point in Fault

PWM signal loss

13.8

V

Generator output, no battery

load

V

Thermal compensation

Driven by ECM

RVC or FLAT

V

Load Regulation

6500 grpm, 10% to 95% load

300

mV

Speed Regulation

15A load, 2,000 to 10,000 grpm

100

mV

Output Saturation Voltage

750

mV

Output Saturation Voltage

850

mV

Field limit current

9

A

6

A

Field Discharge Rectifier

1.85

V

Diode Reverse Current

1

mA

Oscillation frequency

During LRC operation

340

400

460

Hz

MFDC

Minimum Field Duty-Cycle

3

6.25

%

Impedance between FM and F+

0.8

2.5

K

Ω

1.8

Ω

FIELD

C

82nF

ASVR

F

LP

FILTER

F

G

D02AT510

POWER SUPPLY

6V

+-

POWER SUPPLY

2.5V

-+