MAX22201 - Brushed Motor Driver with Integrated Current Sense
The MAX22201 ICs integrate a single 36V, 3.5A peak full bridge configuration for driving brushed DC motors. With low impedance FETs and a typical RON of 0.3Ω, the full bridge ensures high driving efficiency. Peak current of 3.5A is limited by overcurrent protection, while the maximum RMS current is 2A, subject to thermal considerations. These ICs feature integrated current sensing and current drive regulation to monitor and limit motor current. They also provide overcurrent protection, thermal shutdown, and undervoltage lockout capabilities. Packaged in a compact TDFN12 form factor, the MAX22201 are well-suited for space- and power-sensitive applications, offering excellent efficiency and accurate current sensing. The MAX22201 is available in a compact TDFN12 package measuring 3mm x 3mm package.
MAX22201 Pinout Configuration
|
Pin Number |
Pin Name |
Description |
|
1 |
ILIM |
Programmable Current Limiter Analog Input. Connect a resistor from ILIM to GND to set the current limit |
|
2 |
ROFF |
Programmable tOFF Time Analog Input. Leave ROFF unconnected to use the internal fixed tOFF time 20μs. Connect a Resistor from ROFF to GND to set the tOFF time to a desired value. |
|
3 |
GNDP |
Power Ground. Connect to ground plane (GND). |
|
4 |
IN1 |
PWM Input 1 |
|
5 |
IN1 |
PWM Input 2 |
|
6 |
ISEN |
Current Sense Monitor Output |
|
7 |
V18 |
LDO Output Pin. Connect 1μF from V18 to GND. |
|
8 |
GNDA |
Power Ground. Connect to ground plane (GND). |
|
9 |
OUT2 |
Driver Output 2 |
|
10 |
VM |
Supply-Voltage Input. Bypass VM pin to GND with a 1μF capacitor as close as possible to the pin plus a 47μF electrolytic bulk capacitor. |
|
11 |
OUT1 |
Driver Output 1 |
|
12 |
FAULT |
Open-Drain Output. Active-low fault indicator. |
Features
- One Full H-Bridge with +36V Voltage Rating
- Total RDS(ON) (High Side + Low Side): 300mΩ (typ) (TA = +25°C)
- Current Ratings (+25°C typ)
- IPEAK = 3.5A
- IRMS = 2A
- Configurable Current Drive Regulation (CDR) for Limiting Stall and Inrush Current
- Configurable Off Time (tOFF) for CDR (MAX22201 only)
- Lossless Integrated Current Sensing (ICS) Eliminates External Bulky Resistors and Saves Power
- Current Sense Output (CSO) Function: A Replica of the Internally Sensed Current is Output on the ISEN Pin
- Current Drive Regulation Monitor (CDROUT) (MAX22207 only)
- Fault Indicator pin (FAULT)
- Fully Integrated Charge Pump
- Protections
- Overcurrent Protection for Each Individual Channel (OCP)
- Undervoltage Lockout (UVLO)
- Thermal Shutdown (TSD) T = +165°C
- ESD Protection 8kV HBM (OUT1 and OUT2 Pins)
- Ultra-Small Package TDFN12 3mm x 3mm
Alternatives for MAX22201 DC Motor Driver
MX1508, L298N, L293D, SmartElex 15S, VNH2SP30, VNH3ASP30, TB6612FNG
Note: Complete technical details can be found in the MAX22201 datasheet at this page’s end.
Circuit Diagram
Applications
- Brushed DC Motor Drive
- Latched Valves and Solenoids
- Stepper Motor Drive (One Phase Only)
2D Model and Dimensions
Below is the 2D CAD drawing of MAX22201 motor driver along with its dimensions in millimetres. The dimensions can be used to create custom footprints of the module and be used for PCB or CAD modeling.
