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參數資料
| 型號： | L9474 |
| 廠商： | 意法半導體 |
| 英文描述： | ALL SILICON VOLTAGE REGULATOR |
| 中文描述： | 全硅穩(wěn)壓器 |
| 文件頁數： | 5/8頁 |
| 文件大?。?/td> | 439K |
| 代理商： | L9474 |
5/8
L9474
Table 8.
Regulation Features
Notes:
5. A 128Hz PWM signal applied to L input, higher than this threshold, will turn on the device.
6. This threshold on the phase signal is used to detect the phase frequency, fIFR, for the Initiation of field regulation.
7. This threshold on the phase signal is used to sense the presence of the phase for fault detection purposes. Furthermore, to prevent
the loss of phase signal, a 31.25% duty cycle is applied to field output when phase drops below Vp2 and Vgo is above setpoint.
8. This is the time duration the L9474 takes to rump up from 0 % to 100% duty cycle in response to an increased load on the gen-
erator. The LRC ratio is set 1:4 and the Vreg comparator status is latched at foundamental frequency rate.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
LON
Lamp term turn on
5
threshold
fL = 128Hz +/-5%
0.65
0.9
1.15
V
I
LON
VL = 0.65V
0.3
1.5
mA
V
P1
Initiation of regulation detection
phase voltage threshold
6
I
P
= 1mA (sinking current)
0.35
V
V
P2
Fault detection phase voltage
threshold
7
7
8
9
V
I
P
Sinking current @ P terminal
V
P
= 1.5V
0.5
1
1.8
mA
f
IFR
Initiation of field regulation
frequency
72
Hz
FSDF
Field Strobe Duty Factor
@ "power up" with f
PHASE
< f
IFR
12.5
%
LRC
Load Response Control rate
8
2.125
2.5
2.875
s
f
LRC
LRC transition frequency
LRC disabled above this value
263
310
357
Hz
gnd
Difference between ECM &
Alternator ground
-0.2
0.2
V
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相關代理商/技術參數 |
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| L9480VB | 功能描述:電流和電力監(jiān)控器、調節(jié)器 Multifunction Gen RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| L9484 | 功能描述:線性穩(wěn)壓器 - 標準 Alternator Voltage Regulator RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調節(jié): 最大輸入電壓:5.5 V 線路調整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| L9500A | 制造商:AGERE 制造商全稱:AGERE 功能描述:High-Voltage Ringing SLIC for VolP Applications |
| L9503 | 制造商:Leviton Manufacturing Co 功能描述: |
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