Home Power management Voltage references Series voltage references

REF3333

ACTIVE

3.3-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference

A newer version of this product is available

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
REF35 ACTIVE 650-nA quiescent current, 12-ppm/°C drift, ultra-low-power precision voltage reference 680-nA ultra-low-power, wide OTP programmable-voltage option from 1.024 V to 5 V and high precision at 0.05% intial accuracy and 6ppm/°C drift.

Product details

VO (V) 3.3 Initial accuracy (max) (%) 0.15 Temp coeff (max) (ppm/°C) 30 Vin (min) (V) 3.5 Vin (max) (V) 5.5 Iq (typ) (mA) 0.0039 Rating Catalog LFN 0.1 to 10 Hz (typ) (µVPP) 92 Iout/Iz (max) (mA) 5 Operating temperature range (°C) -40 to 125
VO (V) 3.3 Initial accuracy (max) (%) 0.15 Temp coeff (max) (ppm/°C) 30 Vin (min) (V) 3.5 Vin (max) (V) 5.5 Iq (typ) (mA) 0.0039 Rating Catalog LFN 0.1 to 10 Hz (typ) (µVPP) 92 Iout/Iz (max) (mA) 5 Operating temperature range (°C) -40 to 125
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37 SOT-SC70 (DCK) 3 4.2 mm² 2 x 2.1
  • 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
  • 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

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.

 

 

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.

 

 

Download View video with transcript Video

Technical documentation

Design & development

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

Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP adapter evaluation module (DIP-ADAPTER-EVM), which provides a fast, easy and inexpensive way to interface with small surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them (...)

User guide: PDF
Not available on TI.com
Daughter card

BOOSTXL-3PHGANINV — 48-V Three-Phase Inverter With Shunt-Based In-Line Motor Phase Current Sensing Evaluation Module

The BOOSTXL-3PHGANINV evaluation module features a 48-V/10-A three-phase GaN inverter with precision in-line shunt-based phase current sensing for accurate control of precision drives such as servo drives.
 

MathWorks MATLAB & Simulink example models include the following:

User guide: PDF
Not available on TI.com
Simulation model

REF3333 PSpice Model (Rev. A)

SBOM245A.ZIP (36 KB) - PSpice Model
Simulation model

REF3333 TINA-TI Reference Design (Rev. A)

SBOM246A.TSC (107 KB) - TINA-TI Reference Design
Simulation model

REF3333 TINA-TI Spice Model (Rev. A)

SBOM247A.ZIP (6 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-010936 — 48V/16A small form factor three-phase GaN inverter reference design for integrated motor drives

This reference design demonstrates a high-power density 12V to 60V 3-phase power stage using three LMG2100R044 100V, 35A GaN half-bridges with integrated GaN FETs, driver and bootstrap diode specifically for motor-integrated servo drives and robotics applications.  
Accurate phase-current sensing (...)
Design guide: PDF
Reference designs

TIDA-00909 — 48V/10A High Frequency PWM 3-Phase GaN Inverter Reference Design for High-Speed Drives

Low voltage, high-speed drives and/or low inductance brushless motors require higher inverter switching frequencies in the range of 40 kHz to 100 kHz to minimize losses and torque ripple in the motor. The TIDA-00909 reference design achieves that by using a 3-phase inverter with three 80V/10A (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00913 — 48V 3-Phase Inverter with Shunt-based In-line Motor Phase Current Sensing Reference Design

The TIDA-00913 reference design realizes a 48V/10A 3-phase GaN inverter with precision in-line shunt-based phase current sensing for accurate control of precision drives such as servo drives. One of the largest challenges with in-line shunt-based phase current sensing is the high common-mode (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-23 (DBZ) 3 Ultra Librarian
SOT-SC70 (DCK) 3 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos