Features
| • | Ultra low dropout voltage |
| • | Guaranteed 150 mA output current |
| • | Smallest possible size (SOT-23, micro SMD package) |
| • | Requires minimum external components |
| • | Stable with low-ESR output capacitor |
| • | <1 µA quiescent current when shut down |
| • | Low ground pin current at all loads |
| • | Output voltage accuracy 1% (A Grade) |
| • | High peak current capability |
| • | Wide supply voltage range (16V max) |
| • | Low ZOUT: 0.3Ω typical (10 Hz to 1 MHz)
|
| • | Overtemperature/overcurrent protection |
| • | −40°C to +125°C junction temperature range |
| • | Custom voltages available |
General Description
The LP2985 is a 150 mA, fixed-output voltage regulator designed to provide ultra low-dropout and low noise in battery powered
applications.
Using an optimized VIP (Vertically Integrated PNP) process, the LP2985 delivers unequalled performance in all specifications critical to battery-powered
designs:
Dropout Voltage: Typically 300 mV @ 150 mA load, and
7 mV @ 1 mA load.
Ground Pin Current: Typically 850 µA @ 150 mA load, and 75 µA @ 1 mA load.
Enhanced Stability: The LP2985 is stable with output capacitor ESR as low as 5 mΩ, which allows the use of ceramic capacitors on the output.
Sleep Mode: Less than 1 µA quiescent current when ON/OFF pin is pulled low.
Smallest Possible Size: SOT-23 and micro SMD packages use absolute minimum board space.
Precision Output: 1% tolerance output voltages available (A grade).
Low Noise: By adding a 10 nF bypass capacitor, output noise can be reduced to 30 µV (typical).
Multiple voltage options, from 2.5V to 5.0V, are available as standard products. More...
Applications
| • | Cellular Phone |
| • | Palmtop/Laptop Computer |
| • | Personal Digital Assistant (PDA) |
| • | Camcorder, Personal Stereo, Camera |
| |
Typical Application
*click for larger image
| Parameters | Values |
|---|
| Output Current |
150 mA |
| Output Min |
4.5, 3.5, 2.6, 6.1, 3.6, 2.7, 2.5, 3.2, 3.3, 3, 2.8, 3.8, 4, 2.9, 3.1, 5 Volt |
| Input Min Voltage |
2.5 Volt |
| Input Max Voltage |
16 Volt |
| Dropout Voltage |
0.28 Volt |
| Adjustable Output |
No |
| Quiescent Current |
0.065 mA |
| PSRR |
45 dB |
| Voltage Noise (rms) |
30 uV |
| On/Off Pin |
Yes |
| Error Flag |
No |
| RegType |
LDO |
| Temperature Min |
-40 deg C |
| Temperature Max |
125 deg C |
| Output Voltage |
4.5, 3.5, 2.6, 6.1, 3.6, 2.7, 2.5, 3.2, 3.3, 3, 2.8, 3.8, 4, 2.9, 3.1, 5 Volt |
| Output Max |
4.5, 3.5, 2.6, 6.1, 3.6, 2.7, 2.5, 3.2, 3.3, 3, 2.8, 3.8, 4, 2.9, 3.1, 5 Volt |
Typical Performance
click for larger image
| |
Also Recommended
| LP2967 | Dual 150Ma Ldo |
| LP2992▲ | 250Ma Output Current |
| LP38691▲ | Improved Output Current, Smaller Caps |
| LP38693▲ | Improved Output Current , Enable Pin |
| LP2983▲ | 0.9V, 1.0V And 1.2V Output Options |
| LP2985LV▲ | For Output Voltages Between 1.5V And 2.0V |
| LP3985▲ | Lower Dropout Cmos Version |
Additional Resources
Online Seminars
Design Tools
Application Notes
Block Diagram
click for larger image
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RoHS Compliance Information
