Pinout
Specifications| Initial Accuracy (+/-) Max | 2 % |
| Reference Voltage | Adjustable |
| Tempco, max (ppm/C) | 150 ppm |
| Operating Current | 0.01 mA |
| Output Current | 20 mA |
| Reference with respect to | Cathode (high side) |
| Temperature Min | 0 deg C |
| Temperature Max | 70 deg C |
| View Using Catalog |
DescriptionThe LM385-ADJ/LM285/LM385 are micropower 3-terminal adjustable band-gap voltage reference diodes. Operating from 1.24 to 5.3V and over a 10A to 20mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM185 band-gap reference uses only transistors and resistors, low noise and good long-term stability result.
Careful design of the LM385-ADJ has made the device tolerant of capacitive loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation.
The extremely low power drain of the LM385-ADJ makes it useful for micropower circuitry. This voltage reference can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life. Further, the wide operating current allows it to replace older references with a tighter tolerance part.
The LM385-ADJ is rated for operation over a −55°C to 125°C temperature range, while the LM385-ADJ is rated −40°C to 85°C and the LM385 0°C to 70°C. The LM185 is available in a hermetic TO-46 package and a leadless chip carrier package, while the LM285/LM385 are available in a low-cost TO-92 molded package, as well as S.O.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM385BM |
SLM |
0 |
42786 |
0 |
0 |
3352500 |
2 |
951281028 |
| LM385BMX |
SLM |
0 |
42786 |
0 |
0 |
3352500 |
2 |
951281028 |
| LM385BXZ |
SLM |
0 |
42786 |
0 |
0 |
3352500 |
2 |
951281028 |
| LM385BYZ |
SLM |
0 |
42786 |
0 |
0 |
3352500 |
2 |
951281028 |
| LM385BZ |
SLM |
0 |
42786 |
0 |
0 |
3352500 |
2 |
951281028 |
| LM385M |
SLM |
0 |
42786 |
0 |
0 |
3352500 |
2 |
951281028 |
| LM385MX |
SLM |
0 |
42786 |
0 |
0 |
3352500 |
2 |
951281028 |
| LM385Z |
SLM |
0 |
42786 |
0 |
0 |
3352500 |
2 |
951281028 |
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.
LM385-ADJ Data Sheet
