L9474 datasheet(3/8 Pages) STMICROELECTRONICS

3 / 8 page

3/8

L9474

Table 5. Electrical Characteristcs (Tj -35°C to +150°C unless otherwise specified)

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

VOS

Operating Supply Voltage

161

ISB

Stand-by Current 2

VGO = 12.6V, Tcase -35 to +80

°C

400

µA

VGO = 12.6 V, 80 <Tcase< +150

°C

1mA

VSF

Regulator Set-Point in Fault

PWM signal loss

13.8

VNB

Generator output, no battery

No battery, IOUT =2A to 50% max

load

VS-2

VS+2

Thermal compensation

Driven by ECM

RVC or FLAT

VLR

Load Regulation

6500 grpm, 10% to 95% load

300

VSR

Speed Regulation

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

100

VFON

Output Saturation Voltage

IF = 9A, Tcase < = 25°C

750

VFON

Output Saturation Voltage

IF = 6A, Tcase > 25°C

850

IFLIM

Field limit current

F shorted to gnd, Tcase < = 25°C

F shorted to gnd, Tcase = 150 °C

Field Discharge Rectifier

IF =6A, Tcase = 25

°C

1.85

Diode Reverse Current

VR = 16 V

fOSC

Oscillation frequency

During LRC operation

340

400

460

MFDC

Minimum Field Duty-Cycle

V(VGO) < VOV

6.25

RFM

Impedance @ FM pin

Impedance between FM and F+

0.8

2.5

Ω

1.8

Ω

FIELD

82nF

ASVR

FILTER

VGO

D02AT510

POWER SUPPLY

2.5V

L9474 数据表(PDF) 3 Page - STMicroelectronics

L9474 数据表(HTML) 3 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8

数据表下载