SBOS471B April   2010  – June 2015 REF5020-EP , REF5025-EP , REF5040-EP , REF5050-EP

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics: Per Device
    6. 6.6 Electrical Characteristics: All Devices
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Output Adjustment Using The TRIM/NR Pin
      2. 7.3.2 Low Temperature Drift
      3. 7.3.3 Temperature Monitoring
      4. 7.3.4 Noise Performance
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Negative Reference Voltage
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Positive Reference Voltage
        1. 8.2.2.1 Detailed Design Procedure
          1. 8.2.2.1.1 Load Capacitance
          2. 8.2.2.1.2 Bandgap Noise Reduction
    3. 8.3 System Example
      1. 8.3.1 Data Acquisition
  9. 9 Power Supply Recommendations
    1. 9.1 Basic Connections
    2. 9.2 Low Dropout Voltage
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Power Dissipation
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Input voltage VIN 18 V
Output short-circuit 30 mA
Operating temperature –55 125 °C
Junction temperature, TJ 150 °C
Storage temperature, Tstg –65 150 °C
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±3000 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
VIN VOUT + 0.2 V 18 V
IOUT –10 10 mA

6.4 Thermal Information

THERMAL METRIC(1) REF502x-EP UNIT
D (SOIC)
8 PINS
RθJA Junction-to-ambient thermal resistance 97.1 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 42.2 °C/W
RθJB Junction-to-board thermal resistance 34.6 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics: Per Device

At TA = 25°C, ILOAD = 0, CL = 1 μF, and VIN = (VOUT + 0.2 V) to 18 V, unless otherwise noted.
PARAMETER TEST CONDITIONS TA = 25°C TA = –55°C to 125°C UNIT
MIN TYP MAX MIN TYP MAX
REF5020 (VOUT = 2.048V)(1)
OUTPUT VOLTAGE
Output Voltage VOUT 2.7 V < VIN < 18 V 2.048 V
Initial Accuracy –0.05% 0.05%
Over Temperature –0.08% 0.08%
NOISE
Output Voltage Noise f = 0.1 Hz to 10 Hz 6 μVPP
REF5025 (VOUT = 2.5 V)
OUTPUT VOLTAGE
Output Voltage VOUT 2.5 V
Initial Accuracy –0.05% 0.05%
NOISE
Output Voltage Noise f = 0.1 Hz to 10 Hz 7.5 μVPP
REF5040 (VOUT = 4.096V)
OUTPUT VOLTAGE
Output Voltage VOUT 4.096 V
Initial Accuracy –0.05% 0.05%
Over Temperature –0.08% 0.08%
NOISE
Output Voltage Noise f = 0.1 Hz to 10 Hz 12 μVPP
REF5050 (VOUT = 5 V)
OUTPUT VOLTAGE
Output Voltage VOUT 5 V
Initial Accuracy –0.05% 0.05%
Over Temperature –0.08% 0.08%
NOISE
Output Voltage Noise f = 0.1 Hz to 10 Hz 15 μVPP
(1) For VOUT ≤ 2.5 V, the minimum supply voltage is 2.7 V.

6.6 Electrical Characteristics: All Devices

At TA = 25°C, ILOAD = 0, CL = 1 μF, and VIN = (VOUT + 0.2 V) to 18 V, unless otherwise noted.
PARAMETER TEST CONDITIONS TA = 25°C TA = –55°C to 125°C UNIT
MIN TYP MAX MIN TYP MAX
OUTPUT VOLTAGE TEMPERATURE DRIFT
Output Voltage Temperature Drift dVOUT/dT
REF5025 4 6.5 ppm/°C
REF5050 4 6.5 ppm/°C
All other devices 3 5 ppm/°C
LINE REGULATION
Line Regulation dVOUT/dVIN
REF5020(1) VIN = 2.7 V to 18V 0.1 1 ppm/V
All other devices VIN = VOUT + 0.2 V 0.1 1 ppm/V
Over Temperature 1 3 ppm/V
LOAD REGULATION
Load Regulation dVOUT/dILOAD
REF5020 –10 mA < ILOAD < +10 mA, VIN = 3 V 20 30 ppm/mA
All other devices –10 mA < ILOAD < +10 mA, VIN = VOUT + 0.75 V 20 30 ppm/mA
Over Temperature 60 ppm/mA
SHORT-CIRCUIT CURRENT
Short-Circuit Current ISC VOUT = 0 25 mA
TEMP PIN
Voltage Output At TA = 25°C 575 mV
Temperature Sensitivity 2.64 mV/°C
TURNON SETTLING TIME
Turnon Settling Time To 0.1% with CL = 1 μF 200 μs
POWER SUPPLY
Supply Voltage VIN See Note (1) VOUT + 0.2(1) 18 V
Quiescent Current 0.8 1 mA
Over Temperature 1.25 mA
TEMPERATURE RANGE
Specified Range –55 125 °C
Operating Range –55 125 °C
Thermal Resistance θJA 150 °C/W
(1) For VOUT ≤ 2.5 V, the minimal supply voltage is 2.7 V.

6.7 Typical Characteristics

At TA = 25°C, ILOAD = 0, and VIN = VOUT + 0.2 V, unless otherwise noted. For VOUT ≤ 2.5 V, the minimum supply voltage is 2.7 V.
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_histo_0-85_bos410.gif
0°C to 85°C
Figure 1. Temperature Drift
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_histo_vout_bos410.gif
Figure 3. Output Voltage Initial Accuracy
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_psrr-freq_bos410.gif
Figure 5. Power-Supply Rejection Ratio vs Frequency
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_vout-iload_5025_bos471.gif
Figure 7. REF5025 Output Voltage vs Load Current
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_iq-tmp_bos410.gif
Figure 9. Quiescent Current vs Temperature
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_line_reg-tmp_bos410.gif
Figure 11. Line Regulation vs Temperature
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_noise_bos410.gif
Figure 13. NOISE
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_startup_10a_bos471_823920.gif
REF5025, CL = 10 μF
Figure 15. Start-up
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_load_tran_1_10_bos410.gif
CL = 1 μF, IOUT = 10 mA
Figure 17. Load Transient
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_load_tran_10_10_bos410.gif
CL = 10 μF, IOUT = 10 mA
Figure 19. Load Transient
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_line_tran_10_bos410.gif
CL = 10 μF
Figure 21. Line Transient
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_histo_40-125_bos410.gif
–40°C to 125°C
Figure 2. Temperature Drift
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_vout_acc-tmp_bos410.gif
Figure 4. Output Voltage Accuracy vs Temperature
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_vdrop_iload_bos410.gif
Figure 6. Dropout Voltage vs Load Current
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_temp_vout-tmp_bos410.gif
Figure 8. Temp Pin Output vs Voltage Temperature
REF5020-EP REF5025-EP REF5040-EP REF5050-EP quisc_vs_vi_bos471.gif
Figure 10. Quiescent Current vs Input Voltage
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_isc-tmp_bos410.gif
Figure 12. Short-Circuit Current vs Temperature
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_startup_1a_bos471.gif
REF5025, CL = 1 μF
Figure 14. Start-up
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_load_tran_1_1_bos410.gif
CL = 1 μF, IOUT = 1 mA
Figure 16. Load Transient
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_load_tran_10_1_bos410.gif
CL = 10 μF, IOUT = 1 mA
Figure 18. Load Transient
REF5020-EP REF5025-EP REF5040-EP REF5050-EP tc_line_tran_1_bos410.gif
CL = 1 μF
Figure 20. Line Transient