- 您现在的位置：买卖IC网 > PDF目录19223 > NCV7361ADG (ON Semiconductor)IC REG LDO 5V 50MA 8-SOIC PDF资料下载
参数资料
| 型号： | NCV7361ADG |
| 厂商： | ON Semiconductor |
| 文件页数： | 22/27页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V 50MA 8-SOIC |
| 产品变化通告： | Product Discontinuation 27/Jan/2012 |
| 标准包装： | 98 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 5V |
| 输入电压： | 5.25 V ~ 18 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 50mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页当前第22页第23页第24页第25页第26页第27页
NCV7361A
60
50
maximum current
Input Capacity on V SUP C IN
It is necessary to have an input capacity of C IN = 4.7 m F.
Higher capacity values improve the line transient response
40
30
20
SOIC8
T A = 125 ° C
T J = 150 ° C
SOIC8
SOIC8
T A = 85 ° C
T J = 150 ° C
and the supply noise rejection behavior. The combination
of electrolytic capacity (e.g.100 m F) in parallel with a
ceramic RF ? capacity (e.g. 100 nF) archives good
disturbance suppressing.
The input capacity should be placed as close as possible
(< 1 cm) to the V SUP pin.
10
0
5
6
7
8
T A = 85 ° C
T J = 125 ° C
9 10 11 12 13 14 15 16 17 18 19
Load Capacity on V OUT C L
The regulator is stabilized by the output capacitor C L .
The NCV7361A requires a minimum of 4.7 m F capacity
connected to the 5.0 V output to insure stability. This
V SUP (V)
Figure 34. Safe Operating Area
The linear regulator of the NCV7361A operates with
input voltages up to 18 V and can output a current of
50 mA. The maximum power dissipation limits the
maximum output current at high input voltages and high
ambient temperatures. The output current of 50 mA at an
ambient temperature of T A = 125 ° C is only possible with
small voltage differences between V SUP and V CC . See
Figure 34 for safe operating areas for different ambient and
junction temperatures.
Regulator Circuitry
Low Dropout Regulator
The voltage regulator of the NCV7361A is a low dropout
regulator (LDO) with a P ? MOSFET as the
driving transistor.
This type of regulator has a standard pole, generated
from the internal frequency compensation and an
additional pole, which is dependent from the load and the
load capacity. This additional pole can cause an instable
capacitor should maintain its ESR in the stable region of the
ESR curve (Figure 35) over the full operating temperature
range of the application. The capacity value and the ESR
of a capacitor changes with temperature. The minimal
capacity value must be kept within the whole operating
temperature range.
Example 1:
The regulator is stabilized using a 47 m F aluminum
electrolytic capacitor load (ESR = 0.7 W @ 25 ° C). The
capacitance decreases to 42 m F and the ESR increases to
8.9 W at an ambient temperature of ? 40 ° C. The ESR value
is located in the unstable region. The regulator will be
unstable at ? 40 ° C.
Example 2:
The regulator is stabilized using a 47 m F tantalum
capacitor load (ESR = 0.1 W @ 25 ° C). The capacitance
decreases to 45 m F and the ESR increases to 0.11 W at an
ambient temperature of ? 40 ° C. The ESR value is located
in the stable region. The regulator will be stable at ? 40 ° C.
100
behavior of the regulator! It requires a zero point to
compensate this additional pole. It can be realized via an
additional load resistor in series with a load capacity. It is
used for this compensation the
Equivalent Series Resistance (ESR) of the load capacity.
Every real capacity is characterized with an ESR value.
With the help of this ESR value an additional zero point is
implemented into the amplification loop and therefore the
10
1
0.1
Unstable Region
Stable Region
result of the negative phase shift is compensated.
Because of this correlation the regulator has a stable
operating area which is defined by the load resistance R L ,
the load capacity C L and the corresponding ESR value. The
load resistance resp. load current is defined by the
0.01
0
10
Unstable Region
20 30
Load Current (mA)
40
50
application itself and therefore the compensation of the
pole can only be done via variation of the load capacity and
ESR value.
Figure 35. ESR Curves for 6.8 m F 3 C L 3 100 m F and
Frequency of 100 kHz
The value and type of the output capacitor can be
selected by using the diagram shown in Figure 35.
http://onsemi.com
22
相关PDF资料 |
PDF描述 |
|---|---|
| TAJE106K035RNJ | CAP TANT 10UF 35V 10% 2917 |
| VI-JTM-CW-S | CONVERTER MOD DC/DC 10V 100W |
| HWS50-48/HD | PWR SUP IND 48V 52.8W 1.1A |
| HCC44DRAS-S734 | CONN EDGECARD 88POS .100 R/A PCB |
| MUR460RLG | DIODE ULTR FAST 4A 600V DO-201AD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCV7361ADR2 | 功能描述:低压差稳压器 - LDO LDO REG w/Integrated RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCV7361ADR2G | 功能描述:低压差稳压器 - LDO ANA 10mA PLUS LIN RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCV7380 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:LIN Transceiver |
| NCV7380/D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LIN Transceiver |
| NCV7380_07 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:LIN Transceiver |
发布紧急采购，3分钟左右您将得到回复。