Pinout
Specifications| Output Current | 1500 mA |
| Output Min | 0.6 Volt |
| Input Min Voltage | 2.7 Volt |
| Input Max Voltage | 5.5 Volt |
| Dropout Voltage | 0.220 Volt |
| Adjustable Output | Yes |
| Quiescent Current | 2 mA |
| PSRR | 58 dB |
| Voltage Noise (rms) | 100 uV |
| Ceramic Capacitors Stable | Yes |
| Feedback Tolerance | 3.5 % |
| On/Off Pin | Yes |
| Error Flag | No |
| RegType | LDO |
| Temperature Min | -40 deg C |
| Temperature Max | +125 deg C |
| Special Features | Flexcap LDO |
| Output Max | 5.1 Volt |
| Feedback Voltage | 0.6 Volt |
| View Using Catalog |
DescriptionNational's FlexCap LDO's feature unique compensation that allows the use of any type of output capacitor with no limits on minimum or maximum ESR. The LP38502-ADJ series of low-dropout linear regulators operates from a +2.7V to +5.5V input supply. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. Developed on a CMOS process, (utilizing a PMOS pass transistor), the LP38502-ADJ has low quiescent current that changes little with load current.
Ground Pin Current: Typically 2 mA at 1.5A load current.
Disable Mode: Typically 25 nA quiescent current when the Enable pin is pulled low.
Simplified Compensation: Stable with any type of output capacitor, regardless of ESR.
Precision Output: "A" grade versions available with 1.5% VADJ tolerance (25°C) and 3% over line, load and temperature.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LP38502ASD-ADJ |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP38502ASDX-ADJ |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP38502ATJ-ADJ |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP38502SD-ADJ |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP38502SDX-ADJ |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP38502TJ-ADJ |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP38502TS-ADJ |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
| LP38502TSX-ADJ |
CMOS7 |
0 |
16561 |
0 |
0 |
954000 |
4 |
270700104 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1758: Application Note 1758 LP38502SD-ADJ Evaluation Board |
146 Kbytes |
28-Nov-07 |
Download |
| AN-1782: Application Note 1782 LP38502TJ-ADJ Evaluation Board |
146 Kbytes |
29-Jan-08 |
Download |
| AN-1759: Application Note 1759 LP38502TS-ADJ Evaluation Board |
147 Kbytes |
28-Nov-07 |
Download |
| AN-1829: Application Note 1829 LP38502ASD-ADJ Evaluation Board |
146 Kbytes |
12-May-08 |
Download |
| AN-1831: Application Note 1831 LP38502ATJ-ADJ Evaluation Board |
146 Kbytes |
4-Apr-08 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
LP38502-ADJ Data Sheet
