
MAX22203AUU+
Active65V, 3.8A DUAL BRUSHED OR SINGLE STEPPER MOTOR DRIVER WITH INTEGRATED CURRENT SENSE

MAX22203AUU+
Active65V, 3.8A DUAL BRUSHED OR SINGLE STEPPER MOTOR DRIVER WITH INTEGRATED CURRENT SENSE
Description
General part information
MAX22203 Series
The MAX22203 is a dual 65V, 3.8AMAXH-Bridge with PWM inputs and accurate Current Drive Regulation (CDR). Each H-Bridge can be controlled individually and has a very low typical RON (high-side + low-side) of 0.3Ω, resulting in high driving efficiency and low heat generation. The MAX22203 can be used to drive two Brushed DC motors or a single Stepper motor.The integrated CDR can limit the start up or stall the cur- rent of a Brushed DC motor or control the phase current for stepper operation.The bridge output current is sensed by a non-dissipative Integrated Current Sensing (ICS), eliminating the bulky external power resistors (normally required for this function) and compared with a configurable threshold current (ITRIP). The ITRIPthreshold can be set independently for the two full bridges by connecting the external resistors to pins REFA and REFB.The maximum output current per H-Bridge is IMAX= 3.8A and is limited by the Overcurrent Protection (OCP) circuit. This current can be driven for very short transients and is aimed to effectively drive small capacitive loads. The maximum user-configurable current regulation threshold is ITRIP_MAX= 3A. The maximum RMS current (IRMS) per H-Bridge is 2ARMSon a standard JEDEC 4-layer board. The maximum RMS current can be limited by thermal considerations and depends on the thermal characteristic of the application (PCB ground planes, heat sinks, forced air ventilation, etc).The MAX22203 features Overcurrent Protection (OCP), Thermal Shutdown (TSD), and Undervoltage Lockout (UVLO). An open-drain active lowFAULTpin is activated every time a fault condition is detected. During Thermal Shutdown and Undervoltage Lockout, the driver is tristated until normal operating conditions are restored.The MAX22203 is packaged into a small TQFN38 5mm x 7mm and TSSOP38 9.7mm x 4.4mm packages.
Technical Specifications
Parameters and characteristics for this part
| Specification | MAX22203AUU+ |
|---|---|
| Applications | Fan Motor Driver |
| Current - Output | 3.8 A |
| Function | Control and Power Stage, Driver - Fully Integrated |
| Half-Bridge Count | 2 |
| Motor Type - AC, DC | Brushed DC |
| Motor Type - Stepper | Bipolar |
| Mounting Type | Surface Mount |
| Operating Temperature (Max) | 125 °C |
| Operating Temperature (Min) | -40 °C |
| Output Configuration | Half Bridge |
| Package Features | Exposed Pad |
| Package Length | 0.173 in |
| Package Name | 38-TFSOP, 38-TSSOP-EP |
| Package Width | 4.4 mm |
| Technology | NMOS |
| Voltage - Load (Max) | 65 V |
| Voltage - Load (Min) | 4.5 V |
| Voltage - Supply (Maximum) | 65 V |
| Voltage - Supply (Minimum) | 4.5 V |
Pricing
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