- 您现在的位置：买卖IC网 > PDF目录95588 > L9474 (STMICROELECTRONICS) SPECIALTY ANALOG CIRCUIT, SFM8 PDF资料下载
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： | 5/9页 |
| 文件大小： | 516K |
| 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
VLON
Lamp term turn on 5 threshold
fL = 128Hz +/-5%
0.65
0.9
1.15
V
ILON
VL = 0.65V
0.3
1.5
mA
VP1
Initiation of regulation detection
phase voltage threshold 6
IP = 1mA (sinking current)
0.35
V
VP2
Fault detection phase voltage
threshold 7
7
89V
IP
Sinking current @ P terminal
VP = 1.5V
0.5
1
1.8
mA
fIFR
Initiation of field regulation
frequency
72
Hz
FSDF
Field Strobe Duty Factor
@ "power up" with fPHASE < fIFR
12.5
%
LRC
Load Response Control rate 8
2.125
2.5
2.875
s
fLRC
LRC transition frequency
LRC disabled above this value
263
310
357
Hz
gnd
Difference between ECM &
Alternator ground
-0.2
0.2
V
相关PDF资料 |
PDF描述 |
|---|---|
| L9534 | FIBER OPTIC LED EMITTER, 640-660nm, THROUGH HOLE MOUNT |
| L9639PD013TR | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| L9700D013TR | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| L9705D | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| L9705 | SPECIALTY ANALOG CIRCUIT, PDIP20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L9474N | 功能描述:线性稳压器 - 标准 Alternator Voltage Reg w/RVC interface RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| L9480VB | 功能描述:电流和电力监控器、调节器 Multifunction Gen RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| L9484 | 功能描述:线性稳压器 - 标准 Alternator Voltage Regulator RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| L9500A | 制造商:AGERE 制造商全称:AGERE 功能描述:High-Voltage Ringing SLIC for VolP Applications |
| L9503 | 制造商:Leviton Manufacturing Co 功能描述: |
发布紧急采购，3分钟左右您将得到回复。