LM385BZ-2.5/NOPB National Semiconductor, LM385BZ-2.5/NOPB Datasheet
LM385BZ-2.5/NOPB
Manufacturer Part Number
LM385BZ-2.5/NOPB
Description
IC VOLT REF DIODE 2.5V TO92-3
Manufacturer
National Semiconductor
Type
Voltage Referencer
Specifications of LM385BZ-2.5/NOPB
Reference Type
Shunt
Voltage - Output
2.5V
Tolerance
±1.5%
Temperature Coefficient
150ppm/°C
Number Of Channels
1
Current - Cathode
30µA
Current - Output
20mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
TO-92-3 (Standard Body), TO-226
Current, Output
20 mA
Current, Supply
13 μA
Package Type
TO-92
Temperature, Operating, Range
0 to +70 °C
Voltage, Breakdown, Reverse
2.5 V
Voltage, Noise
120 μV
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Input
-
Current - Quiescent
-
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Other names
*LM385BZ-2.5
*LM385BZ-2.5/NOPB
LM385BZ-2.5NS
*LM385BZ-2.5/NOPB
LM385BZ-2.5NS
LM185-2.5/LM285-2.5/LM385-2.5
Micropower Voltage Reference Diode
General Description
The LM185-2.5/LM285-2.5/LM385-2.5 are micropower 2-ter-
minal band-gap voltage regulator diodes. Operating over a 20
μA to 20 mA current range, they feature exceptionally low dy-
namic impedance and good temperature stability. On-chip
trimming is used to provide tight voltage tolerance. Since the
LM-185-2.5 band-gap reference uses only transistors and re-
sistors, low noise and good long term stability result.
Careful design of the LM185-2.5 has made the device excep-
tionally tolerant of capacitive loading, making it easy to use in
almost any reference application. The wide dynamic operat-
ing range allows its use with widely varying supplies with
excellent regulation.
The extremely low power drain of the LM185-2.5 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. Fur-
ther, the wide operating current allows it to replace older
references with a tighter tolerance part. For applications re-
quiring 1.2V see LM185-1.2.
Connection Diagrams
* Pin 3 is attached to the Die Attach Pad (DAP) and should be connected to Pin 2 or left floating.
LM385BXZ-2.5 or LM385BYZ-2.5
See NS Package Number Z03A
LM285BXZ-2.5, LM285BYZ-2.5
LM385AYZ-2.5, LM385BZ-2.5,
Order Number LM285Z-2.5,
LM385Z-2.5, LM385AXZ-2.5
Plastic Package
Bottom View
TO-92
551908
See NS Package Number MA03B
Order Number LM385M3-2.5
SOT-23
The LM185-2.5 is rated for operation over a −55°C to 125°C
temperature range while the LM285-2.5 is rated −40°C to 85°
C and the LM385-2.5 0°C to 70°C. The LM185-2.5/LM285-2.5
are available in a hermetic TO-46 package and the
LM285-2.5/LM385-2.5 are also available in a low-cost TO-92
molded package, as well as S.O. and SOT-23. The
LM185-2.5 is also available in a hermetic leadless chip carrier
package.
Features
■
■
■
■
■
■
551929
±20 mV (±0.8%) max. initial tolerance (A grade)
Operating current of 20 μA to 20 mA
0.6Ω dynamic impedance (A grade)
Low temperature coefficient
Low voltage reference—2.5V
1.2V device and adjustable device also available—
LM185-1.2 series and LM185 series, respectively
LM385BXM-2.5 or LM385BYM-2.5
See NS Package Number M08A
LM285BXM-2.5, LM285BYM-2.5
Order Number LM285M-2.5,
LM385M-2.5, LM385BM-2.5
SO Package
551911
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LM385BZ-2.5/NOPB Summary of contents
Page 1
... Bottom View Order Number LM285Z-2.5, LM285BXZ-2.5, LM285BYZ-2.5 LM385Z-2.5, LM385AXZ-2.5 LM385AYZ-2.5, LM385BZ-2.5, LM385BXZ-2.5 or LM385BYZ-2.5 See NS Package Number Z03A * Pin 3 is attached to the Die Attach Pad (DAP) and should be connected to Pin 2 or left floating. The LM185-2.5 is rated for operation over a −55°C to 125°C temperature range while the LM285-2.5 is rated − ...
Page 2
... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reverse Current Forward Current Operating Temperature Range (Note 3) LM185-2.5 LM285-2.5 LM385-2.5 Electrical Characteristics (Note 4) Parameter Reverse Breakdown I R Voltage Minimum Operating ...
Page 3
Electrical Characteristics Parameter Conditions Reverse T = 25°C, A Breakdown ≤ ≤ 20 μA Voltage Minimum Operating Current LM385M3-2.5 ≤ ≤ 20 μA Reverse Breakdown Voltage ≤ ≤ Change with 1 mA ...
Page 4
... TO-92 Plastic Package (Z) Order Number LM285Z-2.5, LM285BXZ-2.5, LM285BYZ-2.5, LM385Z-2.5, LM385AXZ-2.5, LM385AYZ-2.5, LM385BZ-2.5, LM385BXZ-2.5 or LM385BYZ-2.5 NS Package Number Z03A 14 ...