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Product details

Parameters

VO (V) 1.25 Initial accuracy (Max) (%) 0.15 Temp coeff (Max) (ppm/ degree C) 30 Rating Catalog Vin (Min) (V) 1.7 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 UQFN (RSE) 8 2 mm² 2 x 1.5 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
Technical articles Accurately measure vital signs with low Iq and a small form factor Mar. 28, 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
SBOM230A.ZIP (55 KB) - PSpice Model
SIMULATION MODELS Download
SBOM231A.TSC (89 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM232A.ZIP (6 KB) - TINA-TI Spice Model

Reference designs

REFERENCE DESIGNS Download
Energy harvesting from single cell solar panel for li-ion battery reference design
TIDA-050039 — The TIDA-050039 reference design demonstrates how to use a fully-integrated synchronous boost converter TPS61089 in combination with a single-cell solar panel to charge a li-ion battery. An additional maximum power-point (MPP) sampling network is implemented to dynamically control the input voltage (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Low-Power Reference and Bipolar Voltage Conditioning Circuit Reference Design for Low-Power ADCs
TIPD154 This TI Precision Verified Design provides the theory, component selection, and simulation for a single-supply, low-power signal conditioning circuit designed to translate a +/-5 V input signal to the proper input range of a single-supply low-power 16-Bit ΔΣ ADC such as the one inside (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SC70 (DCK) 3 View options
SOT-23 (DBZ) 3 View options
UQFN (RSE) 8 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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