MAX22211ATJ+

MAX22211ATJ+ is a 36V, 3.8A two H-bridge for dual brushed or single stepper motor drive. The H-bridge FETs have very low impedance resulting in high driving efficiency and low heat generation. The typical total RON (high-side + low-side) is 0.25ohm. Each H-bridge can be individually pulse-width modulation (PWM)-controlled using three logic inputs (DIN1, DIN2, EN). It features an accurate current drive regulation (CDR) which can be used to limit the start-up current of a brushed DC motor or to control the phase current for stepper operation. The bridge output current is sensed by a non-dissipative integrated current sensing (ICS) and it is then compared with user configurable threshold (ITRIP). When the bridge current exceeds the ITRIP threshold, the device enforces the decay for a fixed OFF-time (tOFF). Application includes stepper-motor driver, brushed DC motor driver, solenoid driver, latched valves.

• Two H-Bridges with +36V maximum operating voltage
• Typical total RON (high-side + low-side) is 250mohm (TA = 25°C)
• Low-power mode (sleep mode)
• Minimum overcurrent protection threshold is 3.8A (VM = +4.5V to +36V, TA =+25°C)
• Current sense output (current monitor), fault indicator pin (active-low FAULT)
• Integrated current drive regulation, ICS eliminates bulky external resistors and improves efficiency
• Current drive regulation monitor output pins (CDRA, CDRB)
• Four decay modes supported (slow decay, fast decay, and two mixed decays)
• Half full scale pin to improve current control accuracy in the low current range
• 32 pin TQFN package, operating temperature range from -40°C to +125°C

附註

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