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LP2957的基本参数
  • 制造厂商:TI
  • 产品类别:电源管理
  • 技术类目:线性和低压降 (LDO) 稳压器
  • 功能描述:具有电源正常指示功能的 250mA、30V、低压降稳压器
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LP2957的产品详情:

The LP2957 is a 5V micropower voltage regulator with electronic shutdown, error flag, very low quiescent current (150 µA typical at 1 mA load), and very low dropout voltage (470 mV typical at 250 mA load current).

Output can be wired for snap-on/snap-off operation to eliminate transition voltage states where µP operation may be unpredictable.

Output crowbar (50 mA typical pull-down current) will bring down the output quickly when the regulator snaps off or when the shutdown function is activated.

The part has tight line and load regulation (0.04% typical) and low output temperature coefficient (20 ppm/°C typical).

The accuracy of the 5V output is ensured at room temperature and over the full operating temperature range.

The LP2957 is available in the five-lead TO-220 and DDPAK/TO-263 packages.

LP2957的优势和特性:
  • 5V Output within 1.4% Over Temperature (A Grade)
  • Easily Programmed for Snap-On/Snap-Off Output
  • Ensured 250mA Output Current
  • Extremely Low Quiescent Current
  • Low Input-Output Voltage Required for Regulation
  • Reverse Battery Protection
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Error Flag Signals when Output is out of Regulation

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LP2957的参数(英文):
  • Output options
  • Fixed Output
  • Iout (Max) (A)
  • 0.25
  • Vin (Max) (V)
  • 30
  • Vin (Min) (V)
  • -20
  • Vout (Max) (V)
  • 5
  • Vout (Min) (V)
  • 5
  • Fixed output options (V)
  • 5
  • Noise (uVrms)
  • 320
  • Iq (Typ) (mA)
  • 0.15
  • Thermal resistance θJA (°C/W)
  • 60
  • Rating
  • Catalog
  • Load capacitance (Min) (μF)
  • 2.2
  • Regulated outputs (#)
  • 1
  • Features
  • Enable, Power good
  • Accuracy (%)
  • 2
  • PSRR @ 100 KHz (dB)
  • 14
  • Dropout voltage (Vdo) (Typ) (mV)
  • 470
  • Operating temperature range (C)
  • -40 to 125
LP2957具体的完整产品型号参数及价格(美元):

LP2957的完整型号有:LP2957ISX/NOPB,以下是这些产品的关键参数及官网采购报价:

LP2957ISX/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTT)-5,包装数量MPQ:500个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LP2957ISX/NOPB的批量USD价格:1.277(1000+)

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LP2957的评估套件:

LP2957ISX/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTT)-5,包装数量MPQ:500个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LP2957ISX/NOPB的批量USD价格:1.277(1000+)

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