MAX14922ATE+ Analog Devices

Click here to ask about the production status of specific part numbers. MAX14922 High-Side Switch Controller with Current Limiting General Description Benefits and Features The MAX14922 is a high-side, n-channel FET controller +9V to +70V Operating Supply Range for implementing industrial high-side switches for switch- 5V / 50mA Integrated Linear Regulator ing ground-connected loads. The MAX14922 device con- -40C to +125C Ambient Temperature Operating trols an external nMOS power transistor, allowing low R Range ON high-side switch applications from a +9V to +70V supply 16-TQFN Package, 3mm x 3mm, 0.5mm Pin Pitch range. Robust Design Features Ultra High-Speed Inductive Load Turn-Off by Fast inductive load turn-off can be achieved with use of a Clamping to -70V high-voltage TVS diode enabling up to -70V (max) voltage Supply Independent Inductive Clamping clamping. Ground-connected TVS diodes allow clamping Support of Low R FETs Having Q (Total) = ON g of exceptionally high inductive energies. 50nC Load current is limited to a user-defined value through External FET Turn-On Propagation Delay < 20s a sense resistor. External FET overload protection is Active Current Limit Control During Overcurrent achieved using an auto-retry timing feature, as defined by Fault Monitoring Diagnostic Features a user-selected capacitor (C at t input) or op- BLANK BLANK Overcurrent Detect Output tionally using an external timing control. High Supply-Voltage Indication The MAX14922 features an on-chip comparator enabling Flexible Supply or Load Voltage Monitor monitoring of the high-side switch output or the supply in- Undervoltage Lockout put voltage with a user-selected threshold. An integrated Thermal Warning and Shutdown Protection charge pump enables high speed switching rates when Device Ready Indication using low R FETs in the 20kHz to 50kHz range. ON The MAX14922 is available in a 3mm x 3mm, 16-TQFN Ordering Information appears at end of data sheet. package. The MAX14922 device is specified over the -40C to +125C operating temperature range. Applications Industrial Digital Outputs High-Side Switches Motor Holding Brakes Relay and Solenoid Drivers Simple High-Side Switch Application SYSTEM LOAD POWER (24V) CONNECTOR R S CBYPASS LOAD TVS G S V SNS DD IN t MAX14922 BLANK C FAULT C BLANK MONITOR GND 19-100761 Rev 0 4/20MAX14922 High-Side Switch Controller with Current Limiting TABLE OF CONTENTS General Description 1 Applications 1 Benefits and Features 1 Simple High-Side Switch Application 1 Absolute Maximum Ratings 4 Package Information . 4 16 TQFN 4 Electrical Characteristics . 4 Typical Operating Characteristics 9 Pin Configuration . 12 MAX14922 . 12 Pin Description 12 Functional Diagram . 14 Functional Block Diagram . 14 Detailed Description 15 Logic Interface 15 5V Linear Regulator 15 Inductive Loads . 15 Diagnostic Features 15 Output or Supply Voltage Monitor . 15 Output Ready 16 High Supply Indication (OV) . 16 Overcurrent Monitor . 16 Current Limiting . 16 Current Limit Auto-Retry Timing 17 Short-Circuit Protection . 17 Thermal Warning and Shutdown 17 Maximum Switching Frequency . 17 Applications Information . 19 Selecting the Power nFET Transistor . 19 Transient EMC Protection . 19 Inductive Clamping . 20 Operation with High Supply Voltages . 20 Typical Application Circuits . 20 2A / 24V Application Circuit 20 2A / 60V Application Circuit 21 Ordering Information 22 Revision History . 23 19-100761 www.maximintegrated.com Maxim Integrated 2