- -40%
Szín: 5db - A4988 léptetőmotor meghajtó modul 3D nyomtató alkatrészekhez V3 gravírozó CNC pajzs V3 illesztőprogram
Szín: 5db - A4988 léptetőmotor meghajtó modul 3D nyomtató alkatrészekhez V3 gravírozó CNC pajzs V3 illesztőprogram
361 Ft
40% megtakarítás
601 Ft
Nincs adó
Note: A4988 green and red are the same as 1A
A4988 is a complete micro-stepping motor driver with a built-in converter for easy operation. The product can operate bipolar stepping motors in full, half, 1/4, 1/8 and 1/16 stepping modes, and the output drive performance can reach 35 V and ±1 A. A4988 includes a fixed off-time current regulator, which can work in slow or mixed decay mode. The converter is the key to A4988's easy implementation. Just input a pulse in the "step" input to drive the motor to generate microsteps. No need for phase sequence table, high frequency control line or complicated interface programming. The A4988 interface is very suitable for applications where complex microprocessors are unavailable or overloaded.
During micro-step operation, the chopper control in A4988 can automatically select the current decay mode (slow or mixed). In the mixed decay mode, the device is initially set to decay quickly during part of the fixed downtime, and then slowly decay during the rest of the downtime. The mixed decay current control scheme can reduce audible motor noise, increase step accuracy and reduce power consumption. Provide internal synchronous rectification control circuit to improve power consumption during pulse width modulation (PWM) operation. Internal circuit protection includes: thermal shutdown with hysteresis, under voltage lockout (UVLO) and cross current protection. No special power-on sequencing is required.
The A4988 adopts a surface-mounted QFN package (ES) with a size of 5 mm × 5 mm, a nominal overall package height of 0.90 mm, and an exposed heat sink to enhance heat dissipation. The package is a lead-free package (suffix -T), using 100% matte tin plating lead frame.
Functions and advantages
Low RDS (open) output
Automatic current decay mode detection/selection
Mixed and slow current decay mode
Synchronous rectification for low power dissipation
Internal UVLO
Cross current protection
3.3 and 5 V compatible logic power supply
Thermal shutdown circuit
Ground short circuit protection
Load short circuit protection
Five selectable step modes: full, 1/2, 1/4, 1/8 and 1/16
A4988 is a complete micro-stepping motor driver with a built-in converter for easy operation. The product can operate bipolar stepping motors in full, half, 1/4, 1/8 and 1/16 stepping modes, and the output drive performance can reach 35 V and ±1 A. A4988 includes a fixed off-time current regulator, which can work in slow or mixed decay mode. The converter is the key to A4988's easy implementation. Just input a pulse in the "step" input to drive the motor to generate microsteps. No need for phase sequence table, high frequency control line or complicated interface programming. The A4988 interface is very suitable for applications where complex microprocessors are unavailable or overloaded.
During micro-step operation, the chopper control in A4988 can automatically select the current decay mode (slow or mixed). In the mixed decay mode, the device is initially set to decay quickly during part of the fixed downtime, and then slowly decay during the rest of the downtime. The mixed decay current control scheme can reduce audible motor noise, increase step accuracy and reduce power consumption. Provide internal synchronous rectification control circuit to improve power consumption during pulse width modulation (PWM) operation. Internal circuit protection includes: thermal shutdown with hysteresis, under voltage lockout (UVLO) and cross current protection. No special power-on sequencing is required.
The A4988 adopts a surface-mounted QFN package (ES) with a size of 5 mm × 5 mm, a nominal overall package height of 0.90 mm, and an exposed heat sink to enhance heat dissipation. The package is a lead-free package (suffix -T), using 100% matte tin plating lead frame.
Functions and advantages
Low RDS (open) output
Automatic current decay mode detection/selection
Mixed and slow current decay mode
Synchronous rectification for low power dissipation
Internal UVLO
Cross current protection
3.3 and 5 V compatible logic power supply
Thermal shutdown circuit
Ground short circuit protection
Load short circuit protection
Five selectable step modes: full, 1/2, 1/4, 1/8 and 1/16
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