Datasheet REF3425, REF3430, REF3433, REF3440, REF3450 (Texas Instruments) - 5

REF3425, REF3430, REF3433, REF3440 , REF3450 www.ti.com
SBAS804F – SEPTEMBER 2017 – REVISED JUNE 2021
6 Pin Configuration and Functions
GND_F 1 6 OUT_F GND_S 2 5 OUT_S EN 3 4 IN Not to scale
Figure 6-1. REF34xx DBV Package 6-Pin SOT-23 Top View
NC 1 VOUT 6 GND 2 5 NC NC 3 4 IN Not to scale
Figure 6-2. REF34xxT DBV Package 6-Pin SOT-23 Top View Table 6-1. Pin Functions PIN TYPE DESCRIPTION REF34xx REF34xxT NAME (DBV) (DBV)
GND_F 1 Ground Ground force connection. GND_S 2 Ground Ground sense connection. GND 2 Ground Device ground. EN 3 Input Enable connection. Enables or disables the device. IN 4 4 Power Input supply voltage connection. OUT_S 5 Input Reference voltage output sense connection. OUT_F 6 Output Reference voltage output force connection. VOUT 6 Output Reference voltage output connection. Not connected. Pin can be left floating or connected to voltage within device NC 1,3,5 - operating range. Copyright © 2021 Texas Instruments Incorporated Submit Document Feedback 5 Product Folder Links: REF3425 REF3430 REF3433 REF3440 REF3450 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Device Comparison Table 6 Pin Configuration and 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 7.6 Typical Characteristics 8 Parameter Measurement Information 8.1 Solder Heat Shift 8.2 Long-Term Stability 8.3 Thermal Hysteresis 8.4 Power Dissipation 8.5 Noise Performance 9 Detailed Description 9.1 Overview 9.2 Functional Block Diagram 9.3 Feature Description 9.3.1 Supply Voltage 9.3.2 Low Temperature Drift 9.3.3 Load Current 9.4 Device Functional Modes 9.4.1 EN Pin 9.4.2 Negative Reference Voltage 10 Application and Implementation 10.1 Application Information 10.2 Typical Application: Basic Voltage Reference Connection 10.2.1 Design Requirements 10.2.2 Detailed Design Procedure 10.2.2.1 Input and Output Capacitors 10.2.2.2 4-Wire Kelvin Connections 10.2.2.3 VIN Slew Rate Considerations 10.2.2.4 Shutdown/Enable Feature 10.2.3 Application Curves 11 Power Supply Recommendations 12 Layout 12.1 Layout Guidelines 12.2 Layout Example 13 Device and Documentation Support 13.1 Documentation Support 13.1.1 Related Documentation 13.2 Receiving Notification of Documentation Updates 13.3 Support Resources 13.4 Trademarks 13.5 Electrostatic Discharge Caution 13.6 Glossary 14 Mechanical, Packaging, and Orderable Information