TPS779_TI 具有使能和复位延迟功能的 250mA、10V、低压降稳压器

TPS779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：具有使能和复位延迟功能的 250mA、10V、低压降稳压器
点击这里打开及下载TPS779的技术文档资料
TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格

TPS779的产品详情：

The TPS779xx is a low-dropout regulator with integrated power-on reset. The device is capable of supplying 250 mA of output current with a dropout of 200 mV (TPS77930). Quiescent current is 92 uA at full load dropping down to 1 uA when the device is disabled. The device is optimized to be stable with a wide range of output capacitors including low ESR ceramic (10uF) or low capacitance (1uF) tantalum capacitors. The device has extremely low noise output performance (55 uV_rms) without using any added filter capacitors. TPS779xx is designed to have a fast transient response for larger load current changes.

The TPS779xx is offered in 1.8-V, 2.5-V, and 3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V). Output voltage tolerance is 2% over line, load, and temperature ranges. The TPS779xx family is available in 8-pin MSOP (DGK) packages.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 200 mV at an output current of 250 mA for 3.3 volt option) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 92 uA over the full range of output current, 0 mA to 250 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems.

The device is enabled when the EN pin is connected to a high-level input voltage. This LDO family also features a sleep mode; applying a TTL low signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 uA at T_J = 25°C.

The TPS779xx features an integrated power-on reset, commonly used as a supply voltage supervisor (SVS), or reset output voltage. The RESET\ output of the TPS779xx initiates a reset in DSP, microcomputer, or microprocessor systems at power-up and in the event of an undervoltage condition. An internal comparator in the TPS779xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage. When OUTreaches 95% of its regulated voltage, RESET\ will go to a high-impedance state after a 220 ms delay. RESET\ will go to low-impedance state when OUTis pulled below 95% (i.e. over load condition) of its regulated voltage.

TPS779的优势和特性：

Open Drain Power-On Reset With 220-ms Delay
250-mA Low-Dropout Voltage Regulator
Available in 1.8-V, 2.5-V, 3-V, Fixed Output and Adjustable Versions
Dropout Voltage Typically 200 mV at 250 mA (TPS77930)
Ultralow 92-uA Quiescent Current (Typ)
8-Pin MSOP (DGK) Package
Low Noise (55 uVrms) With No Bypass Capacitor (TPS77918)
2% Tolerance Over Specified Conditions For Fixed-Output Versions
Fast Transient Response
Thermal Shutdown Protection
See the TPS773xx and TPS774xx Family of Devices for Active Low Enable

TPS779的参数（英文）：

Output options
Adjustable Output, Fixed Output
Iout (Max) (A)
0.25
Vin (Max) (V)
10
Vin (Min) (V)
2.7
Vout (Max) (V)
5.5
Vout (Min) (V)
1.5
Fixed output options (V)
1.8, 2.5
Noise (uVrms)
55
Iq (Typ) (mA)
0.09
Thermal resistance θJA (°C/W)
243
Rating
Catalog
Load capacitance (Min) (μF)
1
Regulated outputs (#)
1
Features
Enable, Power good
Accuracy (%)
2
PSRR @ 100 KHz (dB)
24
Dropout voltage (Vdo) (Typ) (mV)
250
Operating temperature range (C)
-40 to 125

TPS779具体的完整产品型号参数及价格（美元）：

TPS779的完整型号有：TPS77901DGK、TPS77901DGKR、TPS77918DGK、TPS77925DGK、TPS77930DGK，以下是这些产品的关键参数及官网采购报价：

TPS77901DGK，工作温度：-40 to 125，封装：VSSOP (DGK)-8，包装数量MPQ：80个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS77901DGK的批量USD价格：1.149（1000+）

TPS77901DGKR，工作温度：-40 to 125，封装：VSSOP (DGK)-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：NIPDAU，TI官网TPS77901DGKR的批量USD价格：.965（1000+）

TPS77918DGK，工作温度：-40 to 125，封装：VSSOP (DGK)-8，包装数量MPQ：80个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS77918DGK的批量USD价格：.965（1000+）

TPS77925DGK，工作温度：-40 to 125，封装：VSSOP (DGK)-8，包装数量MPQ：80个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS77925DGK的批量USD价格：.965（1000+）

TPS77930DGK，工作温度：-40 to 125，封装：VSSOP (DGK)-8，包装数量MPQ：80个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS77930DGK的批量USD价格：.965（1000+）

TPS779的评估套件：

TPS779的电路图解：

TPS779的评估套件：