Overview
The Texas Instruments LP3878SDX-ADJ/NOPB is a high-performance, adjustable low-dropout (LDO) voltage regulator designed to provide reliable and efficient voltage regulation in a variety of applications. This regulator is part of the LP3878-ADJ series and is known for its low noise, high accuracy, and robust protection features. It is particularly suited for applications requiring output voltages as low as 1 V and up to 5.5 V, with a maximum input voltage of 16 V.
Key Specifications
| Attribute | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP3878SDX-ADJ/NOPB |
| Package | WSON-8-EP (4x4 mm) |
| Output Current | 800 mA |
| Input Voltage Range | 2.5 V to 16 V |
| Output Voltage Range | 1 V to 5.5 V |
| Dropout Voltage | 475 mV |
| Operating Temperature Range | -40°C to 125°C |
| Quiescent Current in Shutdown | < 10 μA |
| Ground Pin Current | Typically 5.5 mA @ 800 mA load, 180 μA @ 100 μA load |
| Noise | 18 μVrms (typical) with 10 nF bypass capacitor |
| Output Voltage Accuracy | 1% at room temperature |
Key Features
- Adjustable output voltage from 1 V to 5.5 V
- Designed for use with low ESR ceramic capacitors
- Very low output noise (18 μVrms typical with 10 nF bypass capacitor)
- 8-lead WSON surface-mount package
- Low power shutdown: less than 10 μA quiescent current when shutdown pin is pulled low
- Low ground pin current at all loads
- Over-temperature and over-current protection
- Operating junction temperature range: -40°C to 125°C
Applications
- ASIC power supplies in desktops, notebooks, and graphic cards
- Set top boxes, printers, and copiers
- DSP and FPGA power supplies
- SMPS post-regulator
- Medical instrumentation
Q & A
- What is the maximum output current of the LP3878SDX-ADJ/NOPB?
The maximum output current is 800 mA.
- What is the input voltage range for this regulator?
The input voltage range is from 2.5 V to 16 V.
- What is the output voltage range of the LP3878SDX-ADJ/NOPB?
The output voltage range is adjustable from 1 V to 5.5 V.
- What type of capacitors is the LP3878SDX-ADJ/NOPB designed to work with?
It is designed to work with low ESR ceramic capacitors.
- What is the typical noise level of the LP3878SDX-ADJ/NOPB?
The typical noise level is 18 μVrms with a 10 nF bypass capacitor.
- What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is less than 10 μA.
- What are the operating temperature limits for this regulator?
The operating junction temperature range is -40°C to 125°C.
- Does the LP3878SDX-ADJ/NOPB have over-temperature and over-current protection?
- What is the typical ground pin current at full load?
The typical ground pin current at an 800 mA load is 5.5 mA.
- What package type does the LP3878SDX-ADJ/NOPB come in?
