LP2981A-28是TI公司的一款单通道LDO产品，LP2981A-28是具有关断状态的 100mA 超低压降稳压器，0.75% 容差，本页介绍了LP2981A-28的产品说明、应用、特性等，并给出了与LP2981A-28相关的TI元器件型号供参考。
LP2981A-28 - 具有关断状态的 100mA 超低压降稳压器，0.75% 容差 - 单通道LDO - 线性稳压器(LDO) - TI公司（Texas Instruments，德州仪器）
- Output Tolerance of
- 0.75% (A Grade)
- 1.25% (Standard Grade)
- Ultra-Low Dropout, Typically
- 200 mV at Full Load of 100 mA
- 7 mV at 1 mA
- Wide VIN Range . . . 16 V Max
- Low IQ . . . 600 µA Typ at Full Load of 100 mA
- Shutdown Current . . . 0.01 µA Typ
- Fast Transient Response to Line and Load
- Overcurrent and Thermal Protection
- High Peak Current Capability
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- Portable Applications
- Mobile Phones
- Laptops
- Personal Digital Assistants (PDAs)
- Digital Cameras and Camcorders
- CD and MP3 Players
DESCRIPTION/ORDERING INFORMATION
The LP2981 family of fixed-output, low-dropout regulators offers exceptional, cost-effective performance for both portable and nonportable applications. Available in fixed voltages of 2.8 V, 3 V, 3.3 V, and 5 V, the family has an output tolerance of 0.75% for the A-grade devices (1.25% for the standard grade) and is capable of delivering 100-mA continuous load current. Standard regulator features, such as overcurrent and overtemperature protection, are included.
The LP2981 has features that make the regulator an ideal candidate for a variety of portable applications:
- Low dropout: A PNP pass element allows a typical dropout of 200 mV at 100-mA load current and 7 mV at 1-mA load.
- Low quiescent current: The use of a vertical PNP process allows for quiescent currents that are considerably lower than those associated with traditional lateral PNP regulators.
- Shutdown: A shutdown feature is available, allowing the regulator to consume only 0.01 µA when the ON/OFF pin is pulled low.
- Small packaging: For the most space-constrained needs, the regulator is available in the SOT-23 package.
