A2982SLWTR-T A4982SLPTR-T Electronics Components Chip IC Electronics

A2982SLWTR-T A4982SLPTR-T Electronics Components Chip IC Electronics

A2982SLWTR- FEATURES

■ TTL, DTL, PMOS, or CMOS Compatible Inputs

■ 500 mA Output Source Current Capability

■ Transient-Protected Outputs

■ Output Breakdown Voltage to 80 V

■ DIP or SOIC Packaging

ABSOLUTE MAXIMUM RATINGS at 25°C Free-Air

Temperature Output Voltage Range, VCE (UDN2981A, UDN2982A, UDN2982LW, and A2982SLW) . . 5 V to 50 V

(UDN2983A, UDN2984A, UDN2984LW, and A2984SLW) . 35 V to 80 V

Input Voltage, VIN (UDN2981A and UDN2983A) . . . . . . . . . 15 V

(UDN2982A, UDN2984A, UDN2982LW, UDN2984LW, A2982SLW, and A2984SLW) . . . . . . . . . 20 V

Output Current, IOUT . . . . . . . . . . . . . . -500 mA

Package Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . See

Graph Operating Temperature Range, TA . . . . . . . . . . . . . . . . . . . . -20°C to +85°C

Storage Temperature Range, TS . . . . . . . . . . . . . . . . . . . -55°C to +150°C

A4982SLPTR-T Features and Benefits

▪ Low RDS(ON) outputs

▪ Automatic current decay mode detection/selection

▪ Mixed and Slow current decay modes

▪ Synchronous rectification for low power dissipation

▪ Internal UVLO

▪ Crossover-current protection

▪ 3.3 and 5 V compatible logic supply

▪ Thin profile QFN and TSSOP packages

▪ Thermal shutdown circuitry

▪ Short-to-ground protection

▪ Shorted load protection

▪ Low current Sleep mode, < 10 μA

▪ No smoke no fire (NSNF) compliance (ET package)

Description

The A4982 is a complete microstepping motor driver with built-in translator for easy operation. It is designed to operate bipolar stepper motors in full-, half-, quarter-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2 A.

The A4982 includes a fixed off-time current regulator which has the ability to operate in Slow or Mixed decay modes. The ET package meets customer requirements for no smoke no fire (NSNF) designs by adding no-connect pins between critical output, sense, and supply pins. So, in the case of a pin-to-adjacent-pin short, the device does not cause smoke or fire.

Additionally, the device does not cause smoke or fire when any pin is shorted to ground or left open. The translator is the key to the easy implementation of the A4982. Simply inputting one pulse on the STEP input drives the motor one microstep.

There are no phase sequence tables, high frequency control lines, or complex interfaces to program. The A4982 interface is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened.

During stepping operation, the chopping control in the A4982 automatically selects the current decay mode, Slow or Mixed.

A part  of stock list