SBAS942B December   2018  – April 2019 REF3425-EP , REF3430-EP , REF3433-EP , REF3440-EP

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
      2.      Dropout vs Current Load Over Temperature
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Solder Heat Shift
    2. 8.2 Long-Term Stability
    3. 8.3 Power Dissipation
    4. 8.4 Noise Performance
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Supply Voltage
      2. 9.3.2 Low Temperature Drift
      3. 9.3.3 Load Current
    4. 9.4 Device Functional Modes
      1. 9.4.1 EN Pin
      2. 9.4.2 Negative Reference Voltage
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application: Basic Voltage Reference Connection
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Input and Output Capacitors
        2. 10.2.2.2 4-Wire Kelvin Connections
        3. 10.2.2.3 VIN Slew Rate Considerations
        4. 10.2.2.4 Shutdown/Enable Feature
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Related Links
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Community Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.5 Electrical Characteristics

At TA = 25°C unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ACCURACY AND DRIFT
Output voltage accuracy TA = 25°C –0.05% 0.05%
Output voltage temperature coefficient(1) –55°C ≤ TA ≤ 125°C 2.5 10 ppm/°C
LINE AND LOAD REGULATION
ΔV(OΔVIN) Line regulation(2) VIN = 2.55 V to 12 V, TA = 25°C 2 ppm/V
VIN = VREF + VDO to 12 V, –55°C ≤ TA ≤ 125°C 15
ΔV(OΔIL) Load regulation(2) IL = 0 mA to 10 mA, VIN = 3 V, TA = 25°C Sourcing 20 ppm/mA
IL = 0 mA to 10 mA, VIN = 3 V, –55°C ≤ TA ≤ 125°C Sourcing 30
IL = 0 mA to –10 mA, VIN = VREF + VDO, TA = 25°C Sinking REF3425-EP 40
REF3430-EP 43
REF3440-EP 48
REF3440-EP 60
IL = 0 mA to –10 mA, VIN = VREF + VDO, –55°C ≤ TA ≤ 125°C Sinking REF3425-EP 70
REF3430-EP 75
REF3433-EP 84
REF3440-EP 98
ISC Short-circuit current (output shorted to ground) VREF = 0, TA = 25°C 18 22 mA
NOISE
en p-p Output voltage noise(3) ƒ = 0.1 Hz to 10 Hz 5 µV p-p/V
ƒ = 0.1 Hz to 10 Hz (REF3440-EP) 3.8
ƒ = 10 Hz to 10 kHz 24 µV rms
en Output voltage noise density ƒ = 1 kHz 0.25 ppm/√Hz
ƒ = 1 kHz (REF3440-EP) 0.2
LONG-TERM STABILITY
Long-term stability(4) 0 - 1000 hours at 35°C 25 ppm
1000 - 2000 hours at 35°C 10
TURNON
tON Turnon time 0.1% of output voltage settling, CL = 10 µF 2.5 ms
CAPACITIVE LOAD
CL Stable output capacitor value –55°C ≤ TA ≤ 125°C 0.1 10 µF
OUTPUT VOLTAGE
VREF Output voltage REF3425-EP 2.5 V
REF3430-EP 3
REF3433-EP 3.3
REF3440-EP 4.096
POWER SUPPLY
VIN Input voltage VREF + VDO 12 V
IL Output current capacity VIN = VREF + VDO to 12 V Sourcing 10 mA
VIN = VREF + VDO to 12 V Sinking –10
IQ Quiescent current –55°C ≤ TA ≤ 125°C Active mode 72 95 µA
–55°C ≤ TA ≤ 125°C Shutdown mode 2.5 3
VDO Dropout voltage IL = 0 mA, TA = 25°C 50 mV
IL = 0 mA, –55°C ≤ TA ≤ 125°C 100
IL = 10 mA, –55°C ≤ TA ≤ 125°C 500
VEN ENABLE pin voltage Voltage reference in active mode (EN = 1) 1.6 V
Voltage reference in shutdown mode (EN = 0) 0.5
IEN ENABLE pin leakage current VEN = VIN = 12 V, –55°C ≤ TA ≤ 125°C 1 2 µA
(1) Temperature drift is specified according to the box method. See the Feature Description section for more details.
(2) The ppm/V and ppm/mA in line and load regulation can be also expressed as µV/V and µV/mA.
(3) The peak-to-peak noise measurement procedure is explained in more detail in the Noise Performance section.
(4) Long-term stability measurement procedure is explained in more in detail in the Long-Term Stability section.