- 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：具有反向电流保护功能的汽车类 50mA、电池供电运行 (50V)、低压降稳压器
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The TPS798xx-Q1 is the first device in a line of 50-V high-voltage micropower low-dropout (LDO) linear regulators. This device is capable of supplying 50-mA output current with a dropout voltage of only 300 mV. Designed for low quiescent current high voltage (50 V) applications, 40 µA operating and 1 µA in shutdown makes the TPS798xx-Q1 an ideal choice for battery-powered or high-voltage systems. Quiescent current is also well-controlled in dropout.
Other features of the TPS798xx-Q1 include the ability to operate with low equivalent series resistance (ESR) ceramic output capacitors. This device is stable with only 1 µF on the output; most older devices require from 10-µF to 100-µF tantalum capacitors for stability. Small ceramic capacitors can be used without the necessary addition of ESR, as is common with other regulators. Internal protection circuitry includes reverse input-battery protection, reverse output current protection, current limiting, and thermal limiting to protect the device in various fault conditions.
This device is available in a fixed output voltage of 5 V (TPS79850) and with an adjustable output voltage with a 1.275-V reference voltage (TPS79801). The TPS798xx-Q1 regulator is available in a 8-pin MSOP-PowerPAD (DGN) package with an exposed pad for enhanced thermal management capability.
- Qualified for Automotive Applications
- Wide Input Voltage Range: 3 V to 50 V
- Low Quiescent Current: 40 μA (Typical)
- Low Dropout Voltage: 300 mV (Typical)
- Output Current: 50 mA
- No Input Protection Diodes Needed
- Adjustable Output From 1.275 V to 28 V
- 1-μA Quiescent Current in Shutdown
- Stable With 1-μF Output Capacitor
- Stable With Aluminum, Tantalum, or Ceramic Capacitors
- Reverse Input-Battery Protection
- Reverse Output Current Flow Protection
- Thermal Limiting
- Available in an 8-Pin MSOP-PowerPAD IC Package
- Output options
- Adjustable Output, Fixed Output
- Iout (Max) (A)
- 0.05
- Vin (Max) (V)
- 50
- Vin (Min) (V)
- 3
- Vout (Max) (V)
- 28
- Vout (Min) (V)
- 1.275
- Fixed output options (V)
- 5
- Noise (uVrms)
- 100
- Iq (Typ) (mA)
- 0.04
- Thermal resistance θJA (°C/W)
- 57
- Rating
- Automotive
- Load capacitance (Min) (μF)
- 1
- Regulated outputs (#)
- 1
- Features
- Enable, Reverse current protection, Reverse voltage protection, Short-to-battery protection
- Accuracy (%)
- 3
- PSRR @ 100 KHz (dB)
- 36
- Dropout voltage (Vdo) (Typ) (mV)
- 300
- Operating temperature range (C)
- -40 to 125
TPS798-Q1的完整型号有：TPS79801QDGNRQ1、TPS79850QDGNRQ1，以下是这些产品的关键参数及官网采购报价：
TPS79801QDGNRQ1，工作温度：-40 to 125，封装：HVSSOP (DGN)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网TPS79801QDGNRQ1的批量USD价格：.779（1000+）
TPS79850QDGNRQ1，工作温度：-40 to 125，封装：HVSSOP (DGN)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网TPS79850QDGNRQ1的批量USD价格：.779（1000+）
TPS79801QDGNRQ1，工作温度：-40 to 125，封装：HVSSOP (DGN)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网TPS79801QDGNRQ1的批量USD价格：.779（1000+）
TPS79850QDGNRQ1，工作温度：-40 to 125，封装：HVSSOP (DGN)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网TPS79850QDGNRQ1的批量USD价格：.779（1000+）
