Overview
The LP2985AIM5-6.1 is a micropower, low-noise, ultra-low-dropout voltage regulator produced by National Semiconductor, now part of Texas Instruments. This regulator is designed to provide high performance in battery-powered applications, offering ultra-low dropout voltage, low noise, and high precision output voltage. The LP2985AIM5-6.1 is available in SOT-23 and micro SMD packages, making it ideal for applications where space is limited.
Key Specifications
| Parameter | Conditions | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| Output Voltage | - | 6.1 | - | - | V |
| Output Voltage Tolerance | IL = 1 mA (A Grade) | - | -1.0 | 1.0 | % |
| Dropout Voltage | IL = 150 mA | 300 mV | - | - | mV |
| Ground Pin Current | IL = 150 mA | 850 µA | - | - | µA |
| Quiescent Current (Shutdown) | ON/OFF pin pulled low | < 1 µA | - | - | µA |
| Input Voltage Range | - | - | 2.5 V | 16 V | V |
| Output Current | - | - | - | 150 mA | mA |
| Junction Temperature Range | - | - | -40°C | 125°C | °C |
| Output Noise | With 10 nF bypass capacitor | 30 µVRMS | - | - | µVRMS |
Key Features
- Ultra-low dropout voltage: Typically 300 mV at 150 mA load and 7 mV at 1 mA load.
- Guaranteed 150 mA output current.
- Smallest possible size: Available in SOT-23 and micro SMD packages.
- Requires minimum external components.
- Stable with low-ESR output capacitor: Can use ceramic capacitors with ESR as low as 5 mΩ.
- Low quiescent current: Less than 1 µA when shut down.
- Low ground pin current at all loads.
- High output voltage accuracy: 1% tolerance for A Grade.
- High peak current capability.
- Wide supply voltage range: Up to 16 V.
- Low output impedance (ZOUT): 0.3 Ω typical (10 Hz to 1 MHz).
- Overtemperature and overcurrent protection.
- Custom voltages available upon request.
Applications
- Cellular phones.
- Palmtop and laptop computers.
- Personal Digital Assistants (PDA).
- Camcorders, personal stereos, and cameras.
- Washers and dryers.
- Land mobile radios.
- Active antenna systems and mMIMO.
- Cordless power tools.
- Motor drives and control boards).
Q & A
- What is the maximum output current of the LP2985AIM5-6.1?
The LP2985AIM5-6.1 can provide up to 150 mA of output current.
- What is the typical dropout voltage of the LP2985AIM5-6.1 at 150 mA load?
The typical dropout voltage is 300 mV at 150 mA load).
- How much quiescent current does the LP2985AIM5-6.1 consume when shut down?
The quiescent current is less than 1 µA when the device is shut down).
- What is the output voltage accuracy of the LP2985AIM5-6.1?
The output voltage accuracy is ±1% for A Grade devices).
- What type of capacitors can be used with the LP2985AIM5-6.1?
The device is stable with ceramic output capacitors having an ESR as low as 5 mΩ).
- What is the operating junction temperature range of the LP2985AIM5-6.1?
The operating junction temperature range is from -40°C to 125°C).
- How can the output noise of the LP2985AIM5-6.1 be reduced?
The output noise can be reduced to 30 µVRMS by adding a 10 nF bypass capacitor).
- Does the LP2985AIM5-6.1 have overtemperature and overcurrent protection?
Yes, the device includes overtemperature and overcurrent protection features).
- What is the typical output impedance (ZOUT) of the LP2985AIM5-6.1?
The typical output impedance is 0.3 Ω (10 Hz to 1 MHz)).
- Can custom output voltages be obtained for the LP2985AIM5-6.1?
Yes, custom voltages are available upon request).
