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参数资料
| 型号： | L9474 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, SFM8 |
| 封装： | MULTIWATT-8 |
| 文件页数： | 3/9页 |
| 文件大小： | 516K |
| 代理商： | L9474 |
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
8
161
V
ISB
Stand-by Current 2
VGO = 12.6V, Tcase -35 to +80
°C
400
A
VGO = 12.6 V, 80 <Tcase< +150
°C
1mA
VSF
Regulator Set-Point in Fault
PWM signal loss
13.8
V
VNB
Generator output, no battery
No battery, IOUT =2A to 50% max
load
VS-2
VS+2
V
TC
Thermal compensation
Driven by ECM
RVC or FLAT
V
VLR
Load Regulation
6500 grpm, 10% to 95% load
300
mV
VSR
Speed Regulation
15A load, 2,000 to 10,000 grpm
100
mV
VFON
Output Saturation Voltage
IF = 9A, Tcase < = 25°C
750
mV
VFON
Output Saturation Voltage
IF = 6A, Tcase > 25°C
850
mV
IFLIM
Field limit current
F shorted to gnd, Tcase < = 25°C
9
A
F shorted to gnd, Tcase = 150 °C
6
A
VF
Field Discharge Rectifier
IF =6A, Tcase = 25
°C
1.85
V
IR
Diode Reverse Current
VR = 16 V
1
mA
fOSC
Oscillation frequency
During LRC operation
340
400
460
Hz
MFDC
Minimum Field Duty-Cycle
V(VGO) < VOV
3
6.25
%
RFM
Impedance @ FM pin
Impedance between FM and F+
0.8
2.5
K
1.8
FIELD
C
82nF
ASVR
FM
F
LP
FILTER
VGO
F
G
D02AT510
POWER SUPPLY
6V
+-
POWER SUPPLY
2.5V
-+
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