LP2951 单路输出 LDO、100mA、可调节电压、宽输入电压范围、复位标志 | 德州仪器 TI.com.cn

LP2951 (正在供货)

单路输出 LDO、100mA、可调节电压、宽输入电压范围、复位标志

单路输出 LDO、100mA、可调节电压、宽输入电压范围、复位标志 - LP2951
数据表
 

备选器件推荐

  • LP2950  - 器件与被比较器件具有相同的功能,但并不是引脚对引脚等效,也有可能参数不相同。   Has lower pin count and fixed voltage option

描述

The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V, 3.3 V, and 3 V. However, the 8-pin LP2951 is able to output either a fixed or adjustable output from the same device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together, the LP2951 outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and VTAP pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value between 1.235 V to 30 V.

特性

  • Wide Input Range: Up to 30 V
  • Rated Output Current of 100 mA
  • Low Dropout: 380 mV (Typ) at 100 mA
  • Low Quiescent Current: 75 µA (Typ)
  • Tight Line Regulation: 0.03% (Typ)
  • Tight Load Regulation: 0.04% (Typ)
  • High VO Accuracy
    • 1.4% at 25°C
    • 2% Over Temperature
  • Can Be Used as a Regulator or Reference
  • Stable With Low ESR (>12 mΩ) Capacitors
  • Current- and Thermal-Limiting Features
  • LP2950 Only (3-Pin)
    • Fixed-Output Voltages of 5 V, 3.3 V, and 3 V
  • LP2951 Only (8-Pin Package)
    • Fixed- or Adjustable-Output Voltages:
      5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJ
    • Low-Voltage Error Signal on Falling Output
    • Shutdown Capability
    • Remote Sense Capability for Optimal Output
      Regulation and Accuracy

查看更多内容

参数 与其它产品相比 线性稳压器(LDO)

 
Output Options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Fixed Output Options (V)
Package Group
Features
Regulated Outputs (#)
Operating Temperature Range (C)
Thermal Resistance θJA (°C/W)
Noise (uVrms)
Approx. Price (US$)
Rating
Output Capacitor Type
PSRR @ 100KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package Size: mm2:W x L (PKG)
LP2951 LP2950 LP2950-N LP2951-N
Adjustable Output
Fixed Output    
Fixed Output     Fixed Output     Adjustable Output
Fixed Output    
0.1     0.1     0.1     0.1    
30     30     30     30    
2     2     2.3     2.3    
29     5     5     29    
1.2     3     3     1.24    
3
3.3
5    
3
3.3
5    
3
3.3
5    
3
3.3
5    
SOIC | 8
SON | 8    
TO-92 | 3     TO-252 | 3
TO-92 | 3    
PDIP | 8
SOIC | 8
VSSOP | 8
WSON | 8    
Enable
Power Good    
N/A     N/A     Enable
Power Good    
1     1     1     1    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
52     97     51     43    
160     100     100     160    
0.18 | 1ku     0.12 | 1ku     0.25 | 1ku     0.25 | 1ku    
Catalog     Catalog     Catalog     Catalog    
Non-Ceramic     Ceramic     Ceramic     Ceramic    
57     57     51     51    
3     3     3     2.5    
380     110     380     380    
0.075     0.075     0.075     0.075    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
See datasheet (SON)    
3TO-92: 19 mm2: 3.68 x 5.2 (TO-92 | 3)     3TO-252: 40 mm2: 6.1 x 6.58 (TO-252 | 3)
3TO-92: 19 mm2: 3.68 x 5.2 (TO-92 | 3)    
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)
See datasheet (WSON)    
New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LP2951

  最小   最大 范围
输入电压  V 2.3 to 30.0V
输出电压  V 1.235 to 29V
输出电流  A ≤ 0.1A
环境温度  °C -40 to 125°C


覆盖面积 BOM成本 效率


Preview design