- 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 500mA、10V、可调节低压降稳压器
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The TPS71Hxx integrated circuits are a family of micropower low-dropout (LDO) voltage regulators. An order of magnitude reduction in dropout voltage and quiescent current over conventional LDO performance is achieved by replacing the typical pnp pass transistor with a PMOS device.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 32 mV at an output current of 100 mA for the TPS71H50) and is directly proportional to the output current (see Figure 1). Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and remains independent of output loading (typically 285 uA over the full range of output current, 0 mA to 500 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. The LDO family also features a sleep mode; applying a TTL high signal to EN\ (enable)\ shuts down the regulator, reducing the quiescent current to 0.5 uA maximum at TJ = 25°C.
Power good (PG) reports low output voltage and can be used to implement a power-on reset or a low-battery indicator.
The TPS71Hxx is offered in 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges (3% for adjustable version). The TPS71Hxx family is available in a TSSOP (20-pin) thermally enhanced surface-mount power package. The package has an innovative thermal pad that, when soldered to the printed-wiring board (PWB), enables the device to dissipate several watts of power (see Thermal Information section). Maximum height of the package is 1.2 mm.
- Available in 5-V, 4.85-V, and 3.3-V Fixed-Output and Adjustable Versions
- Very Low-Dropout Voltage ...Maximum of 32 mV at IO = 100 mA (TPS71H50)
- Very Low Quiescent Current – Independent of Load . . . 285 uA Typ
- Extremely Low Sleep-State Current 0.5 uA Max
- 2% Tolerance Over Specified Conditions For Fixed-Output Versions
- Output Current Range of 0 mA to 500 mA
- TSSOP Package Option Offers Reduced Component Height for Space-Critical Applications
- Thermally Enhanced Surface-Mount Package
- Power-Good (PG) Status Output
- Output options
- Adjustable Output
- Iout (Max) (A)
- 0.5
- Vin (Max) (V)
- 10
- Vin (Min) (V)
- 2.5
- Vout (Max) (V)
- 9.75
- Vout (Min) (V)
- 1.2
- Noise (uVrms)
- 74
- Iq (Typ) (mA)
- 0.28
- Thermal resistance θJA (°C/W)
- 179
- Rating
- Catalog
- Load capacitance (Min) (μF)
- 10
- Regulated outputs (#)
- 1
- Features
- Enable, Power good
- Accuracy (%)
- 3
- PSRR @ 100 KHz (dB)
- 59
- Dropout voltage (Vdo) (Typ) (mV)
- 235
- Operating temperature range (C)
- -40 to 125
TPS71H01的完整型号有：TPS71H01QPWPR，以下是这些产品的关键参数及官网采购报价：
TPS71H01QPWPR，工作温度：-40 to 125，封装：HTSSOP (PWP)-20，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS71H01QPWPR的批量USD价格：2.42（1000+）
TPS71H01QPWPR，工作温度：-40 to 125，封装：HTSSOP (PWP)-20，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS71H01QPWPR的批量USD价格：2.42（1000+）
