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Texas Instruments LM385BPW-2-5 — Analog & Data Acquisition

LM385BPW-2-5 Shunt Voltage Reference, 2.5V Fixed, 8-TSSOP

MPNLM385BPW-2-5
Obsolete

Texas Instruments LM385BPW-2-5, shunt voltage reference, fixed 2.5V output, ±1.5% tolerance, 20 mA output, 8-TSSOP surface-mount package, 0°C to 70°C.

Texas Instruments LM385BPW-2-5 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM385BPW-2-5 specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeShunt
Voltage - output (Min (Fixed))2.5V
Output current20 mA
Current - cathode20 µA
Operating temperature0°C~70°C(TA)
PackageTray
Tolerance±1.5%
Case8-TSSOP (0.173\", 4.40mm Width)
Noise - 10Hz to 10kHz120µVrms
Temperature coefficient20ppm/°CTypical

Product details

2.5V shunt reference in an 8-TSSOP – what you are working with

It is a two-terminal device that regulates voltage by shunting current to ground, requiring only a single external resistor to set the bias current. The output is fixed at 2.5V with an initial tolerance of ±1.5% and a typical temperature coefficient of 20 ppm/°C. It can source up to 20 mA of output current and requires a minimum cathode current of 20 µA to maintain regulation. The 8-TSSOP footprint (4.40 mm width) is a common surface-mount package for board-level reference functions.

Sourcing a discontinued precision reference

Availability is limited to independent-distribution channels and surplus stock.

Package and footprint – 8-TSSOP

The 8-TSSOP package (0.173-inch body width, 4.40 mm) is a standard surface-mount form factor.

Frequently asked questions

LM385BPW-2-5 vs LM385Z-2.5 – which is better?

Both are 2.5V shunt references from the LM385 family. The LM385BPW-2-5 comes in an 8-TSSOP surface-mount package; the LM385Z-2.5 is a through-hole TO-92 part. The choice is driven by board assembly – surface-mount vs through-hole – not by electrical performance. The LM385Z-2.5 is also obsolete.