Overview
The LP2985AIM5X-1.8/NOPB, produced by Texas Instruments (previously National Semiconductor), is a 150-mA, fixed-output voltage regulator. This component is designed to provide high performance and low noise in applications requiring output voltages ≤ 2 V. It utilizes an optimized vertically integrated PNP (VIP) process, ensuring exceptional performance in battery-powered designs. The regulator is available in a SOT-23 (DBV) package with 5 pins and operates over a wide supply voltage range from 2.2 V to 16 V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Supply Voltage | 2.2 to 16 | V |
| Output Current | 150 | mA |
| Output Voltage Accuracy (A Grade) | 1% | |
| Quiescent Current (Shutdown) | < 1 µA | |
| Ground Pin Current at 150-mA Load | Typically 825 µA | |
| Operating Junction Temperature Range | -40 to 125 | °C |
| Package Type | SOT-23 (DBV) | |
| Pins | 5 | |
| Thermal Resistance (Junction-to-Ambient) | 175.7 | °C/W |
Key Features
- Wide Supply Voltage Range: 2.2 V to 16 V
- Ensured 150-mA Output Current
- Requires Minimum External Components
- Stable With Low-ESR Output Capacitor (as low as 5 mΩ)
- < 1-µA Quiescent Current When Shut Down
- Low Ground Pin Current at all Loads
- High Peak Current Capability
- Low ZOUT: 0.3-Ω Typical (10 Hz to 1 MHz)
- Overtemperature/Overcurrent Protection
- Low Noise: Output noise can be reduced to 30 µV (typical) with a 10-nF bypass capacitor
Applications
- Cellular Phone
- Palmtop/Laptop Computer
- Personal Digital Assistant (PDA)
- Camcorder, Personal Stereo, Camera
Q & A
- What is the maximum output current of the LP2985AIM5X-1.8/NOPB?
The maximum output current is 150 mA.
- What is the operating junction temperature range of the LP2985AIM5X-1.8/NOPB?
The operating junction temperature range is -40°C to 125°C.
- What is the quiescent current when the regulator is in shutdown mode?
The quiescent current is less than 1 µA when the ON/OFF pin is pulled low.
- What type of package does the LP2985AIM5X-1.8/NOPB come in?
The regulator comes in a SOT-23 (DBV) package with 5 pins.
- What is the typical output voltage accuracy of the LP2985AIM5X-1.8/NOPB?
The output voltage accuracy is 1% for the A grade version.
- How can the output noise be reduced?
Output noise can be reduced to 30 µV (typical) by adding a 10-nF bypass capacitor between the BYPASS pin and the GND pin.
- What is the thermal resistance (junction-to-ambient) of the LP2985AIM5X-1.8/NOPB in the SOT-23 package?
The thermal resistance is 175.7 °C/W.
- Does the LP2985AIM5X-1.8/NOPB have overtemperature and overcurrent protection?
- What is the minimum ESR of the output capacitor that the LP2985AIM5X-1.8/NOPB can be stable with?
The regulator is stable with output capacitor ESR as low as 5 mΩ.
- What are some common applications of the LP2985AIM5X-1.8/NOPB?
Common applications include cellular phones, palmtop/laptop computers, personal digital assistants (PDAs), and camcorders/personal stereos/cameras.
