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参数资料
| 型号： | NCV8184PDR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 8SOIC-EP |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 可调 |
| 输入电压： | 4 V ~ 42 V |
| 电压 - 压降（标准）： | 0.35V @ 60mA |
| 稳压器数量： | 1 |
| 电流 - 限制（最小）： | 70mA |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm Width）裸露焊盘 |
| 供应商设备封装： | 8-SOIC-EP |
| 包装： | 带卷 (TR) |
NCV8184
APPLICATION NOTES
V OUT Short to Battery
The NCV8184 will survive a short to battery when hooked
up the conventional way as shown in Figure 19. No damage
to the part will occur. The part also endures a short to battery
when powered by an isolated supply at a lower voltage as in
Short to battery
Figure 20. In this case the NCV8184 supply input voltage is
set at 7.0 V when a short to battery (14 V typical) occurs on
V OUT which normally runs at 5.0 V. The current into the
device (ammeter in Figure 20) will draw additional current
as displayed in Figure 21.
Loads
V OUT 70 mA
C2**
10 m F
V OUT
GND
V IN
GND
B+
C1*
1.0 m F
+ Automotive Battery
? typically 14 V
GND
GND
V REF /
?
Adj
ENABLE
V OUT = V REF
C3***
10 nF
5.0 V
+
5.0 V
Figure 19.
Short to battery
A
Automotive Battery
typically 14 V
V OUT
Loads
C2**
10 m F
70 mA
V OUT
GND
V IN
GND
B+
C1*
1.0 m F
7V
+
?
GND
GND
V REF /
?
* C1 is required if the regulator is far from the power source filter.
** C2 is required for stability.
*** C3 is recommended for EMC susceptibility.
Adj
ENABLE
V OUT = V REF
C3***
10 nF
5.0 V
+
5.0 V
Figure 20.
18
16
14
12
10
8
6
Switched Application
The NCV8184 has been designed for use in systems where
the reference voltage on the V REF /ENABLE pin is
continuously on. Typically, the current into the
V REF /ENABLE pin will be less than 1.0 m A when the
voltage on the V IN pin (usually the ignition line) has been
switched out (V IN can be at high impedance or at ground.)
Reference Figure 22.
Ignition
4
V OUT
Switch
2
0
5 6 7 8 9 10 1112 1314 15 1617 1819 20 2122 2324 25 26
C2
10 m F
V OUT
GND
V IN
GND
C1
1.0 m F
V BAT
V OUT VOLTAGE (V)
GND
GND
Figure 21. V OUT Short to Battery
Adj
V REF /
ENABLE
< 1.0 m A
V REF
5.0 V
Figure 22.
http://onsemi.com
6
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