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Product details

Parameters

VO (V) 1.8 Initial accuracy (Max) (%) 0.15 Temp coeff (Max) (ppm/ degree C) 30 Rating Catalog Vin (Min) (V) 2 Vin (Max) (V) 5.5 Iq (Typ) (uA) 3.9 Iout/Iz (Max) (mA) 5 Operating temperature range (C) -40 to 125 open-in-new Find other Series voltage references

Package | Pins | Size

SOT-23 (DBZ) 3 7 mm² 2.92 x 2.37 SOT-SC70 (DCK) 3 3 mm² 2 x 1.3 open-in-new Find other Series voltage references

Features

  • Microsize Packages: SC70-3, SOT-23-3, UQFN-8
  • Low Supply Current: 3.9 µA (typ)
  • Extremely Low Dropout Voltage: 110 mV (typ)
  • High Output Current: ±5 mA
  • Low Temperature Drift: 30 ppm/°C (max)
  • High Initial Accuracy: ±0.15% (max)
  • 0.1-Hz to 10-Hz Noise: 35 µVPP (REF3312)
  • Voltage Options: 1.2 V, 1.8 V, 2.5 V, 3 V, 3.3 V

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Description

The REF33xx is a low-power, precision, low-dropout voltage reference family available in tiny SC70-3 and SOT-23-3 packages, and in a 1.5-mm × 1.5-mm UQFN-8 package. Small size and low power consumption (5-µA max) make the REF33xx ideal for a wide variety of portable and battery-powered applications.

The REF33xx can be operated at a supply voltage 180 mV above the specified output voltage under normal load conditions, with the exception of the REF3312, which has a minimum supply voltage of 1.7 V. All models are specified for the wide temperature range of –40°C to +125°C.

 

 

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Technical documentation

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Type Title Date
* Datasheet REF33xx 3.9-μA, SC70-3, SOT-23-3, and UQFN-8, 30-ppm/°C Drift Voltage Reference datasheet (Rev. H) Jan. 16, 2018
Application notes REF33xx Functional Safety FIT Rate and Failure Mode Distribution Dec. 18, 2019
More literature Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Application notes Diode-Based Temperature Measurements (Rev. A) May 17, 2019
White papers Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

SIMULATION MODELS Download
SBOM233B.ZIP (36 KB) - PSpice Model
SIMULATION MODELS Download
SBOM234A.TSC (94 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM235A.ZIP (6 KB) - TINA-TI Spice Model

Reference designs

REFERENCE DESIGNS Download
Industrial Servo Drive and AC Inverter Drive Reference Design
TIDM-SERVODRIVE The DesignDRIVE Development Kit is a reference design for a complete industrial drive directly connecting to a three phase ACI or PMSM motor. Many drive topologies can be created from the combined control, power and communications technologies included on this single platform.  Includes (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SC70 (DCK) 3 View options
SOT-23 (DBZ) 3 View options

Ordering & quality

Support & training

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Videos

Voltage Reference Use Cases

Beyond the scope of signal chain conditioning, see other voltage reference use cases in this informative video.

Posted: 07-Jan-2018
Duration: 05:53

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