- 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：具有电源正常指示和使能功能的 100mA、30V、可调节低压降稳压器
- 点击这里打开及下载LP4951C的技术文档资料
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The LP4950C and LP4951C are micropower voltage regulators with very low quiescent current (75μA typ.) and very low dropout voltage (typ. 40mV at light loads and 380mV at 100mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the LP4950C/LP4951C increases only slightly in dropout, prolonging battery life.
The LP4950C in the popular 3-pin TO-92 package is pin compatible with older 5V regulators. The 8-lead LP4951C is available in a plastic surface mount package and offers additional system functions.
One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V output or programmed from 1.24V to 29V with an external pair of resistors.
Careful design of the LP4950C/LP4951C has minimized all contributions to the error budget. This includes a tight initial tolerance (.5% typ.), extremely good load and line regulation (.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.
- High Accuracy 5V Specified 100mA Output
- Extremely Low Quiescent Current
- Low Dropout Voltage
- Extremely Tight Load and Line Regulation
- Very Low Temperature Coefficient
- Use as Regulator or Reference
- Needs Only 1μF for Stability
- Current and Thermal Limiting
- Error Flag Warns of Output Dropout
- Logic-controlled Electronic Shutdown
- Output Pogrammable From 1.24 to 29V
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- Output options
- Adjustable Output
- Iout (Max) (A)
- 0.1
- Vin (Max) (V)
- 30
- Vin (Min) (V)
- 2.43
- Vout (Max) (V)
- 29
- Vout (Min) (V)
- 1.24
- Noise (uVrms)
- 100
- Iq (Typ) (mA)
- 15
- Thermal resistance θJA (°C/W)
- 160
- Rating
- Catalog
- Load capacitance (Min) (μF)
- 1
- Regulated outputs (#)
- 1
- Features
- Enable, Power good
- Accuracy (%)
- 3
- PSRR @ 100 KHz (dB)
- 13
- Dropout voltage (Vdo) (Typ) (mV)
- 430
- Operating temperature range (C)
- -40 to 125
LP4951C的完整型号有：LP4951CM/NOPB、LP4951CMX/NOPB，以下是这些产品的关键参数及官网采购报价：
LP4951CM/NOPB，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：95个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP4951CM/NOPB的批量USD价格：.341（1000+）
LP4951CMX/NOPB，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP4951CMX/NOPB的批量USD价格：.288（1000+）
LP4951CM/NOPB，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：95个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP4951CM/NOPB的批量USD价格：.341（1000+）
LP4951CMX/NOPB，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP4951CMX/NOPB的批量USD价格：.288（1000+）
