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参数资料
| 型号： | NCV8184PDG |
| 厂商： | ON Semiconductor |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 8SOIC-EP |
| 标准包装： | 98 |
| 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： | 管件 |
NCV8184
CIRCUIT DESCRIPTION
ENABLE Function
By pulling the V REF /ENABLE lead below 0.8 V, (see
Figure 16 or Figure 17), the IC is disabled and enters a sleep
state where the device draws less than 20 m A from supply.
When the V REF /ENABLE lead is greater than 2.1 V, V OUT
tracks the V REF /ENABLE lead normally.
Output Voltage
The output is capable of supplying 70 mA to the load
while configured as a similar (Figure 13), lower (Figure 15),
or higher (Figure 14) voltage as the reference lead. The Adj
lead acts as the inverting terminal of the op amp and the
V REF lead as the non ? inverting.
The device can also be configured as a high ? side driver as
displayed in Figure 18.
V OUT , 70 mA
V OUT , 70 mA
Loads
C2**
10 m F
V OUT
GND
GND
V IN
GND
GND
C1*
1.0 m F
B+
Loads
C2**
10 m F
R F
V OUT
GND
GND
V IN
GND
GND
C1*
1.0 m F
B+
Adj
V REF /
ENABLE
C3***
10 nF
5.0 V
R A
Adj
V REF /
ENABLE
C3***
10 nF
V REF
VOUT + VREF(1 ) E )
VOUT + VREF
Figure 13. Tracking Regulator at the Same Voltage
R
RA
Figure 14. Tracking Regulator at Higher Voltages
V OUT , 70 mA
Loads
C2**
10 m F
V OUT
GND
V IN
GND
C1*
1.0 m F
B+
V OUT , 70 mA
C2**
10 m F
V OUT
GND
V IN
GND
C1*
1.0 m F
B+
GND GND
Adj V REF /
ENABLE
C3***
10 nF
R1
R2
V REF
from MCU
GND GND
Adj V REF /
ENABLE
C3***
10 nF
R
V REF
)
VOUT + VREF(
R2
R1 ) R2
Figure 15. Tracking Regulator at Lower Voltages
Figure 16. Tracking Regulator with ENABLE Circuit
6.0 V ? 40 V
V IN
NCV8501
V REF (5.0 V)
100 nF
70 mA
V OUT
V IN
B+
70 mA
To Load
(e.g. sensor)
10 m F
V OUT V IN
GND GND
GND GND
Adj V REF /
ENABLE
C1*
1.0 m F
I/O
C3***
10 nF
m C
GND GND
GND GND
Adj V REF /
ENABLE
VOUT + B ) * VSAT
C3***
10 nF
MCU
Figure 17. Alternative ENABLE Circuit
Figure 18. High ? Side Driver
* C1 is required if the regulator is far from the power source filter. In case of power supply generates voltage ripple (e.g. DC-DC con-
verter) a passive low pass filter with C1 value at least 1 m F is required to suppress the ripple. The filter should be designed according
to particular operating conditions and verified in the application.
** C2 is required for stability.
*** C3 is recommended for EMC susceptibility
http://onsemi.com
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