Overview
The DRV8436RGER, produced by Texas Instruments, is a highly integrated stepper motor driver designed for industrial and consumer applications. This device features a PWM microstepping stepper motor driver with a simple STEP/DIR interface, allowing for precise control over the stepper motor. It integrates two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing, eliminating the need for external power sense resistors. The DRV8436RGER supports up to 1/256 microstepping and operates within a supply voltage range of 4.5 to 48 V, making it versatile for various applications.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Power Supply Voltage (VM) | -0.3 | 50 | V | |
| Charge Pump Voltage (VCP, CPH) | -0.3 | VVM + 7 | V | |
| Output Current (Peak) | 2.4 | A | ||
| Output Current (Full-Scale) | 1.5 | A | ||
| Output Current (RMS) | 1.1 | A | ||
| High-Side FET On Resistance (RDS(ONH)) at 25°C | 450 | 550 | mΩ | |
| Low-Side FET On Resistance (RDS(ONL)) at 25°C | 450 | 550 | mΩ | |
| Output Slew Rate | 150 | V/μs | ||
| PWM Off-Time (TOFF) | 7 | 32 | μs | |
| UVLO Lockout Voltage | 4.15 | 4.25 | 4.35 | V |
Key Features
- PWM microstepping stepper motor driver with up to 1/256 microstepping capability
- Simple STEP/DIR interface for external controller management
- Integrated current sense functionality, eliminating the need for external sense resistors
- Smart tune decay technology for optimal current regulation and compensation for motor variation and aging
- Configurable decay modes: slow-mixed, mixed decay, smart tune Ripple Control, and smart tune Dynamic Decay
- Low-power sleep mode with a quiescent current of 2 μA
- Protection features: VM undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), thermal shutdown (OTSD), and fault condition output (nFAULT)
- Supports 1.8-V, 3.3-V, 5.0-V logic inputs
- Compact package options: HTSSOP (28-pin) and VQFN (24-pin)
Applications
- Multi-purpose printers and scanners
- 3D printers and laser beam printers
- Automatic teller and money handling machines
- Textile and sewing machines
- Stage lighting equipment
- CCTV, security, and dome cameras
- Office and home automation
- Factory automation and robotics
Q & A
- What is the operating voltage range of the DRV8436RGER?
The DRV8436RGER operates within a supply voltage range of 4.5 to 48 V.
- What is the maximum output current of the DRV8436RGER?
The device can provide up to 2.4-A peak, 1.5-A full-scale, or 1.1-A root mean square (rms) output current.
- What microstepping capabilities does the DRV8436RGER offer?
The DRV8436RGER supports up to 1/256 microstepping.
- What protection features are included in the DRV8436RGER?
The device includes VM undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), thermal shutdown (OTSD), and fault condition output (nFAULT).
- How does the DRV8436RGER manage current sensing?
The DRV8436RGER uses an internal current-sense architecture, eliminating the need for external power sense resistors.
- What are the available package options for the DRV8436RGER?
The device is available in HTSSOP (28-pin) and VQFN (24-pin) packages.
- What is the purpose of the Smart Tune decay technology in the DRV8436RGER?
The Smart Tune decay technology automatically adjusts for optimal current regulation performance and compensates for motor variation and aging effects.
- How does the DRV8436RGER enter low-power sleep mode?
The device enters low-power sleep mode when the nSLEEP pin is set to logic low.
- What is the quiescent current in sleep mode for the DRV8436RGER?
The quiescent current in sleep mode is 2 μA.
- What types of logic inputs does the DRV8436RGER support?
The device supports 1.8-V, 3.3-V, and 5.0-V logic inputs.
