TPS722 50mA、无电容、低输入电压、低压降线性稳压器 | 德州仪器 TI.com.cn

TPS722 (正在供货) 50mA、无电容、低输入电压、低压降线性稳压器

50mA、无电容、低输入电压、低压降线性稳压器 - TPS722
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描述

The TPS722xx family of LDO regulators is available in fixed voltage options that are commonly used to power the latest DSP’s and microcontrollers with an adjustable option ranging from 1.22 V to 2.5 V. These regulators can be used in a wide variety of applications ranging from portable, battery-powered equipment to PC peripherals. The family features operation over a wide range of input voltages (1.8 V to 5.5 V) and low dropout voltage (50 mV at full load). Therefore, compared to many other regulators that require 2.5-V or higher input voltages for operation, these regulators can be operated directly from two AAA batteries. Also, the typical quiescent current (ground pin current) is low, starting at 85 uA during normal operation and 1 uA in shutdown mode. Thus, these regulators can be operated very efficiently and, in a battery-powered application, help extend the longevity of the device.

Similar LDO regulators require 1-uF or larger output capacitors for stability. However, this regulator uses an internal compensation scheme that stabilizes the feedback loop over the full range of input voltages and load currents with output capacitances as low as 0.1-uF. Ceramic capacitors of this size are relatively inexpensive and available in small footprints.

This family of regulators is particularly suited as a portable power supply solution due to its minimal board space requirement and 1.8-V minimum input voltage. Being able to use two off-the-shelf, AAA, batteries makes system design easier and also reduces component cost. Moreover, the solution will be more efficient than if a regulator with a higher input voltage is used.

特性

  • 50-mA LDO
  • Available in 1.5-V, 1.6-V, and 1.8-V Fixed-Output and Adjustable Versions
  • Low Input Voltage Requirement (Down to 1.8 V)
  • Small Output Capacitor, 0.1-uF
  • Dropout Voltage Typically 50 mV at 50 mA
  • Less Than 1 uA Quiescent Current in Shutdown Mode
  • Thermal Protection
  • Over Current Limitation
  • 5-Pin SOT-23 (DBV) Package
  • APPLICATIONS
    • Portable Communication Devices
    • Battery Powered Equipment
    • PCMCIA Cards
    • Personal Digital Assistants
    • Modems
    • Bar Code Scanners
    • Backup Power Supplies
    • SMPS Post Regulation
    • Internet Audio

参数

与其它产品相比 线性稳压器(LDO) 邮件 下载到电子表格中
Part number 立即下单 Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (V) Fixed output options (V) Package Group Features Regulated outputs (#) Operating temperature range (C) Thermal resistance θJA (°C/W) Noise (uVrms) Approx. price (US$) Rating PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
TPS722 立即下单 Adjustable Output
Fixed Output    
0.05     5.5     1.8     2.5     1.22     1.5
1.6
1.8    
SOT-23 | 5     Enable     1     -40 to 125     66     90     0.47 | 1ku     Catalog     8     3     50     0.28     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
TPS721 立即下单 Adjustable Output
Fixed Output    
0.15     5.5     1.8     2.5     1.23     1.5
1.6
1.8    
SOT-23 | 5     Enable     1     -40 to 125     66     90     0.47 | 1ku     Catalog     8     3     150     0.085     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)