Stepper Motor Drivers with Built-in Micro-stepping Algorithm Solveing the Jitter and Noise Problems
The TMI88221 device is a Stepper Motor Driver used in TV cameras, network cameras, and other low-noise stepper motor applications. TMI88221 has a wide input voltage range of 4V to 20V, can be powered by a DC power supply and single or multi-cell lithium batteries, and supports 1A RMS current (peak current 1A).
Different from traditional chips, TMI88221 built-in micro-stepping algorithm effectively solves the common jitter and noise problems of motor drive and does not require users to set PWM control signals, and only needs to control 2 logic signals to switch 3-speed control modes. On this basis, different speed regulation schemes can be provided according to user needs.
TMI88221 has built-in under-voltage protection and over-temperature protection, which can effectively guarantee the stability of chip work.
TMI88221 adopts the ESOP8 package, external application devices only need 2 chip capacitors and 1 electrolytic capacitor, which greatly saves layout space.
Functions and features:
1. Drive a stepper motor with a built-in micro-step algorithm to reduce the noise and jitter of the stepper motor
2. Three preset speed levels
3. 4V to 20V wide operating voltage of VCC
4. LDMOS RDSON (HS + LS): 0.83Ω (typical value)
5.1.0A peak current drive
6. No need for PWM control signal
7. Low-power sleep mode
8. VCC under-voltage lockout (UVLO)
9. Thermal shutdown protection (TSD)
Application:
1. TV camera
2. Network Camera
3. Industrial equipment
4. Other low noise stepper motors
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