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| 型号： | NCP511SN27T1 |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/11页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.7V .15A 5TSOP |
| 产品变化通告： | Product Discontinuation 27/Jun/2007 |
| 标准包装： | 3,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.7V |
| 输入电压： | 最高 6V |
| 电压 - 压降（标准）： | 0.1V @ 100mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 150mA（最小） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-TSOP（0.059"，1.50mm 宽）5 引线 |
| 供应商设备封装： | 5-TSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | NCP511SN27T1OS |
NCP511
APPLICATIONS INFORMATION
PD + J(max)
A typical application circuit for the NCP511 series is
shown in Figure 16.
Input Decoupling (C1)
A 1.0 m F capacitor either ceramic or tantalum is
recommended and should be connected close to the NCP511
package. Higher values and lower ESR will improve the
overall line transient response.
Output Decoupling (C2)
The NCP511 is a stable Regulator and does not require any
specific Equivalent Series Resistance (ESR) or a minimum
output current. Capacitors exhibiting ESRs ranging from a
few m W up to 3.0 W can thus safely be used. The minimum
decoupling value is 1.0 m F and can be augmented to fulfill
stringent load transient requirements. The regulator accepts
ceramic chip capacitors as well as tantalum devices. Larger
values improve noise rejection and load regulation transient
response.
Enable Operation
The enable pin will turn on or off the regulator. These
Thermal
As power across the NCP511 increases, it might become
necessary to provide some thermal relief. The maximum
power dissipation supported by the device is dependent
upon board design and layout. Mounting pad configuration
on the PCB, the board material and also the ambient
temperature effect the rate of temperature rise for the part.
This is stating that when the NCP511 has good thermal
conductivity through the PCB, the junction temperature will
be relatively low with high power dissipation applications.
The maximum dissipation the package can handle is
given by:
T * TA
R q JA
If junction temperature is not allowed above the
maximum 125 ? C, then the NCP511 can dissipate up to
400 mW @ 25 ? C.
The power dissipated by the NCP511 can be calculated
from the following equation:
Ptot + Vin * Ignd (Iout) ) [Vin * Vout] * Iout
VinMAX + tot
limits of threshold are covered in the electrical specification
section of this data sheet. If the enable is not used then the
pin should be connected to V in .
or
P ) Vout * Iout
Ignd ) Iout
Hints
Please be sure the V in and GND lines are sufficiently wide.
When the impedance of these lines is high, there is a chance
to pick up noise or cause the regulator to malfunction.
If a 150 mA output current is needed then the ground
current from the data sheet is 40 m A. For an NCP511SN30T1
(3.0 V), the maximum input voltage will then be 5.6 V.
Set external components, especially the output capacitor,
as close as possible to the circuit, and make leads a short as
possible.
100
UNSTABLE
10
Battery or
Unregulated
Voltage
C1
+
1
2
5
+
V out
C2
1
0.1
STABLE
C out = 1 m F to 10 m F
T A = 25 ? C to 125 ? C
V in = up to 6.0 V
OFF
ON
3
4
0.01
0
25
50 75 100
I O , OUTPUT CURRENT (mA)
125
150
Figure 16. Typical Application Circuit
Figure 17. Output Capacitor vs. Output Current
http://onsemi.com
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相关代理商/技术参数 |
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|---|---|
| NCP511SN27T1G | 功能描述:低压差稳压器 - LDO 2.7V 150mA CMOS w/Enable 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 |
| NCP511SN28T1 | 功能描述:低压差稳压器 - LDO 2.8V 150mA CMOS 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 |
| NCP511SN28T1G | 功能描述:低压差稳压器 - LDO 2.8V 150mA CMOS w/Enable 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 |
| NCP511SN30T1 | 功能描述:低压差稳压器 - LDO 3.0V 150mA CMOS 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 |
| NCP511SN30T1G | 功能描述:低压差稳压器 - LDO 3.0V 150mA CMOS w/Enable 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 |
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