LM285BXM-2.5/NOPB【PDF 1/22 页】IC VREF SHUNT 2.5V 8-SOIC

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LM185-2.5-N, LM285-2.5-N, LM385-2.5-N

www.ti.com

SNVS743D – DECEMBER 1999 – REVISED MARCH 2013

LM185-2.5-N/LM285-2.5-N/LM385-2.5-N Micropower Voltage Reference Diode

Check for Samples: LM185-2.5-N , LM285-2.5-N , LM385-2.5-N

FEATURES

Careful design of the LM185-2.5-N has made the

±20 mV (±0.8%) max. Initial Tolerance (A

Grade)

device exceptionally tolerant of capacitive loading,

making it easy to use in almost any reference

application. The wide dynamic operating range allows

Operating Current of 20 μ A to 20 mA

0.6 Ω 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

its use with widely varying supplies with excellent

regulation.

The extremely low power drain of the LM185-2.5-N

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. For applications requiring

DESCRIPTION

The LM185-2.5-N/LM285-2.5-N/LM385-2.5-N are

micropower 2-terminal band-gap voltage regulator

diodes. Operating over a 20 μ A to 20 mA current

range, they feature exceptionally low dynamic

impedance and good temperature stability. On-chip

trimming is used to provide tight voltage tolerance.

Since the LM-185-2.5-N band-gap reference uses

only transistors and resistors, low noise and good

long term stability result.

Connection Diagram

Figure 1. TO-92 Package

(Bottom View)

1.2V see LM185-1.2.

The LM185-2.5-N is rated for operation over a ? 55°C

to 125°C temperature range while the LM285-2.5-N is

rated ? 40°C to 85°C and the LM385-2.5-N 0°C to

70°C. The LM185-2.5-N/LM285-2.5-N are available in

a hermetic TO package and the LM285-2.5-N/LM385-

2.5-N are also available in a low-cost TO-92 molded

package, as well as SOIC and SOT-23. The LM185-

2.5-N is also available in a hermetic leadless chip

carrier package.

Figure 2. SOIC Package

See Package Number D0008A

See Package Number LP0003A

* Pin 3 is attached to the Die Attach Pad (DAP) and should be connected to Pin 2 or left floating.

Figure 3. SOT-23

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

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