Overview
The LP2985A-33DBVR is a high-performance, low-noise, low-dropout voltage regulator produced by Texas Instruments. This regulator is designed to support a wide input voltage range from 2.5 V to 16 V and can deliver up to 150 mA of load current. It is particularly suited for applications requiring high accuracy and low noise, making it ideal for use with low-voltage microcontrollers (MCUs) and processors.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range (VIN) | 2.5 V to 16 V |
| Output Voltage Range (VOUT) | 1.2 V to 5.0 V (fixed, 100-mV steps) |
| Output Accuracy | ±0.5% for new chip, ±1% for A-grade legacy chip, ±1.5% for standard-grade legacy chip |
| Output Current | Up to 150 mA |
| Quiescent Current (IQ) | 71 µA at ILOAD = 0 mA, 750 µA at ILOAD = 150 mA |
| Shutdown Current | 0.01 µA (typ) for legacy chip, 1.12 µA (typ) for new chip |
| Noise | 30 µV RMS with 10-nF bypass capacitor |
| PSRR | 70 dB at 1 kHz, 40 dB at 1 MHz |
| Operating Junction Temperature | -40°C to +125°C |
| Package | 5-pin SOT-23 (DBV) |
Key Features
- Low noise: 30 µV RMS with a 10-nF bypass capacitor
- High PSRR: 70 dB at 1 kHz, 40 dB at 1 MHz
- Output current limiting and thermal protection
- Stable with 2.2-µF ceramic capacitors
- Internal soft-start time and current limit protection to reduce inrush current
- Shutdown feature with low shutdown current
- High accuracy output voltage across load and temperature
Applications
- Washer and dryer systems
- Land mobile radio systems
- Active antenna systems and mMIMO
- Cordless power tools
- Motor drives and control boards
Q & A
- What is the input voltage range of the LP2985A-33DBVR? The input voltage range is from 2.5 V to 16 V.
- What is the maximum output current of the LP2985A-33DBVR? The maximum output current is up to 150 mA.
- What is the output voltage accuracy of the new chip? The output voltage accuracy is ±0.5% for the new chip.
- How much noise does the LP2985A-33DBVR produce? The noise is 30 µV RMS with a 10-nF bypass capacitor.
- What is the PSRR of the LP2985A-33DBVR? The PSRR is 70 dB at 1 kHz and 40 dB at 1 MHz.
- What is the operating junction temperature range of the LP2985A-33DBVR? The operating junction temperature range is -40°C to +125°C.
- What type of package does the LP2985A-33DBVR come in? The LP2985A-33DBVR comes in a 5-pin SOT-23 (DBV) package.
- Does the LP2985A-33DBVR have shutdown functionality? Yes, it has a shutdown feature with low shutdown current.
- What kind of protection features does the LP2985A-33DBVR have? It includes output current limiting, thermal protection, and internal soft-start time and current limit protection.
- What types of applications is the LP2985A-33DBVR suitable for? It is suitable for applications such as washer and dryer systems, land mobile radio systems, active antenna systems, cordless power tools, and motor drives and control boards.
