LP2950

正在供货

具有低 IQ 的 100mA、30V、低压降稳压器

产品详情

Output options Fixed Output Iout (max) (A) 0.1 Vin (max) (V) 30 Vin (min) (V) 2 Vout (max) (V) 5 Vout (min) (V) 3 Fixed output options (V) 3, 3.3, 5 Rating Catalog Noise (µVrms) 100 PSRR at 100 KHz (dB) 57 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 97 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.1 Vin (max) (V) 30 Vin (min) (V) 2 Vout (max) (V) 5 Vout (min) (V) 3 Fixed output options (V) 3, 3.3, 5 Rating Catalog Noise (µVrms) 100 PSRR at 100 KHz (dB) 57 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 97 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
TO-92 (LP) 3 19.136 mm² 5.2 x 3.68
  • Wide input voltage range
    • VIN range (new chip): 2V to 30V
  • Wide output voltage range VOUT
    • Fixed option: 5.0V, 3.3V, 3V (Legacy Chip)
    • Adjustable option: 1.2V to 29V
  • VOUT accuracy:
    • ±2% over temperature for legacy chip
    • ±0.7% over temperature for new chip
    • ±1% over line, load, and temperature for new chip
  • Output current: Up to 100mA
  • Low IQ (New Chip): 50µA (Typical)
  • Low dropout: 340mV (Typical) at 100mA for new chip
  • Output current limiting and thermal shutdown
  • Open-Drain Error output
  • Stable over a wide range of ceramic output capacitor values
    • COUT range: 1µF to 100µF (New Chip)
    • ESR range: 0 to 2Ω (New Chip)
  • Operating junction temperature: –40°C to 125°C
  • Package option:
    • LP (3-pin TO-92)
    • D (8-pin SOIC)
    • DRG (8-pin WSON)
  • Wide input voltage range
    • VIN range (new chip): 2V to 30V
  • Wide output voltage range VOUT
    • Fixed option: 5.0V, 3.3V, 3V (Legacy Chip)
    • Adjustable option: 1.2V to 29V
  • VOUT accuracy:
    • ±2% over temperature for legacy chip
    • ±0.7% over temperature for new chip
    • ±1% over line, load, and temperature for new chip
  • Output current: Up to 100mA
  • Low IQ (New Chip): 50µA (Typical)
  • Low dropout: 340mV (Typical) at 100mA for new chip
  • Output current limiting and thermal shutdown
  • Open-Drain Error output
  • Stable over a wide range of ceramic output capacitor values
    • COUT range: 1µF to 100µF (New Chip)
    • ESR range: 0 to 2Ω (New Chip)
  • Operating junction temperature: –40°C to 125°C
  • Package option:
    • LP (3-pin TO-92)
    • D (8-pin SOIC)
    • DRG (8-pin WSON)

The LP2951 is a wide input low-dropout regulator (LDO) supporting an input voltage range from 2V to 30V and up to 100mA of load current. 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 LP2950/LP2951 can give 5V or 3.3V fixed output voltages. 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 1.2V to 29V.

The LP2951 has a ERROR output that monitors the voltage at the feedback pin to indicate the status of the output voltage. The SHUTDOWN input and ERROR output can be used for sequencing multiple power supplies in the system.

The LP2951 is available in a 3-pin 4.83mm x 4.83mm TO-92(LP), an 8-pin 4.9mm x 6.0mm SOIC(D), and 8-pin 3mm x 3mm SON(DRG) package.

The LP2951 is a wide input low-dropout regulator (LDO) supporting an input voltage range from 2V to 30V and up to 100mA of load current. 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 LP2950/LP2951 can give 5V or 3.3V fixed output voltages. 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 1.2V to 29V.

The LP2951 has a ERROR output that monitors the voltage at the feedback pin to indicate the status of the output voltage. The SHUTDOWN input and ERROR output can be used for sequencing multiple power supplies in the system.

The LP2951 is available in a 3-pin 4.83mm x 4.83mm TO-92(LP), an 8-pin 4.9mm x 6.0mm SOIC(D), and 8-pin 3mm x 3mm SON(DRG) package.

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类型 标题 下载最新的英语版本 日期
* 数据表 LP295x Adjustable Micropower Voltage Regulators With Shutdown 数据表 (Rev. J) PDF | HTML 2024年 8月 5日
应用手册 LDO 噪声揭秘 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2020年 9月 16日
应用手册 ESR, Stability, and the LDO Regulator (Rev. A) 2020年 1月 7日
应用手册 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日
应用手册 AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) 2013年 4月 24日
应用手册 简化的 LDO PSRR 测量 最新英语版本 (Rev.A) PDF | HTML 2010年 7月 28日
应用手册 3.6V – 5.5V Input, LDO Reference Design for MSP430 (Rev. A) 2010年 6月 14日
应用手册 Packaging Limits Range of Linear Regulators 2010年 5月 8日
应用手册 Simple Power Solution Using LDOs for the DM365 (Rev. A) 2009年 9月 11日
应用手册 Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 2008年 6月 4日
应用手册 Ceramic Capacitors Replace Tantalum Capacitors in LDOs (Rev. A) 2006年 10月 13日
应用手册 Understanding LDO Dropout 2005年 5月 9日
应用手册 Extending the Input Voltage Range of an LDO Regulator 2002年 8月 16日
应用手册 Understanding the Terms and Definitions of LDO Voltage Regulators 1999年 10月 21日
应用手册 Technical Review of Low Dropout Voltage Regulator Operation And Performance 1999年 8月 30日
应用简报 Low Power 150-mA LDO Linear Regulators. Extended Output Voltage Adjustment Range 1999年 6月 11日

设计和开发

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仿真模型

LP2950-33 PSpice Transient Model

SLVM953.ZIP (22 KB) - PSpice Model
封装 引脚 CAD 符号、封装和 3D 模型
TO-92 (LP) 3 Ultra Librarian

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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