Datasheet REF34-Q1 (Texas Instruments) - 7

REF34-Q1 www.ti.com
SBAS901C – JULY 2018 – REVISED OCTOBER 2020
8 Typical Characteristics
at TA = 25°C, VIN = VEN = 12 V, IL = 0 mA, CL = 10 µF, CIN = 0.1 µF (unless otherwise noted) 74 73 A) 12V (m 72 nt (%) re 71 lation t Cur pu en 5V Po sc 70 Quie 3.3V 69 3V 68 00 25 50 75 00 25 50 75 00 25 50 75 00 25 50 75 00 25 50 75 00 -40 -15 10 35 60 85 110 125 0. 0. 0. 0. 1. 1. 1. 1. 2. 2. 2. 2. 3. 3. 3. 3. 4. 4. 4. 4. 5. Temperature (°C) D001 Vinv Drift (ppm/°C)
Figure 8-2. VIN vs IQ Over Temperature
(-40°C to 125°C)
Figure 8-1. Temperature Drift
0.02 75 0.015 74.5 ) (% ) y 0.01 A 74 (µ urac t c 0.005 73.5 Ac 0 urren C 73 age olt -0.005 ent c 72.5 t V es pu -0.01 Qui 72 Out -0.015 71.5 -0.02 71 -50 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 Temperature (°C) D002 Temperature (°C) D004
Figure 8-3. Output Voltage Accuracy vs Temperature Figure 8-4. Quiescent Current vs Temperature
-20 0.24 CL = 1uF 0.23 CL = 10uF (dB) -40 0.22 tio V) a 0.21 R 0.2 (ppm/ tion -60 ec ion 0.19 ej R 0.18 -80 egulat 0.17 upply R S 0.16 er Line -100 0.15 ow P 0.14 -120 0.13 10 100 1k 10k 100k -40 -20 0 20 40 60 80 100 120 140 Frequency (Hz) Temperature (°C) D005 D019
Figure 8-5. Power-Supply Rejection Ratio vs Frequency Figure 8-6. Line Regulation
Copyright © 2020 Texas Instruments Incorporated Submit Document Feedback 7 Product Folder Links: REF34-Q1 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Device Comparison Table 6 Pin Configuration and Functions 6.1 Pin Functions 7 Specifications 7.1 Absolute Maximum Ratings 7.2 ESD Ratings 7.3 Recommended Operating Conditions 7.4 Thermal Information 7.5 Electrical Characteristics 8 Typical Characteristics 9 Parameter Measurement Information 9.1 Solder Heat Shift 9.2 Long-Term Stability 9.3 Thermal Hysteresis 9.4 Power Dissipation 9.5 Noise Performance 10 Detailed Description 10.1 Overview 10.2 Functional Block Diagram 10.3 Feature Description 10.3.1 Supply Voltage 10.3.2 Low Temperature Drift 10.3.3 Load Current 10.4 Device Functional Modes 10.4.1 EN Pin 11 Application and Implementation 11.1 Application Information 11.2 Typical Applications 11.2.1 Basic Voltage Reference Connection 11.2.1.1 Design Requirements 11.2.1.2 Detailed Design Procedure 11.2.1.2.1 Input and Output Capacitors 11.2.1.2.2 4-Wire Kelvin Connections 11.2.1.2.3 V​IN Slew Rate Considerations 11.2.1.2.4 Shutdown/Enable Feature 11.2.1.3 Application Curves 11.2.2 Advanced Driver Assistance Systems (ADAS) Microcontroller Connection 11.2.2.1 Basic Voltage Reference Connection 11.2.2.2 Design Requirements 11.2.2.3 Detailed Design Procedure 11.2.2.4 Enable Feature in ADAS 12 Power Supply Recommendations 13 Layout 13.1 Layout Guidelines 13.2 Layout Example 14 Device and Documentation Support 14.1 Documentation Support 14.1.1 Related Documentation 14.2 Receiving Notification of Documentation Updates 14.3 Support Resources 14.4 Trademarks 14.5 Electrostatic Discharge Caution 14.6 Glossary 15 Mechanical, Packaging, and Orderable Information