STA7130MPR Series: 2-Phase Stepper Motor Unipolar Driver ICs

The STA7130MPR series are driver ICs for driving unipolar mode, 2-phase stepper motors. These drivers are designed for low-voltage (up to 44 V output) motor applications. The series provides a range of maximum output currents from 1 to 2 A, in pin-compatible proprietary (model STA) packages, allowing system optimization with reduced printed circuit board requirements. The logic section provides four modes of operation: forward and reverse normal drive rotation, outputs-off free spin (coast), and electronic braking.

The innovative multi-chip internal structure separates the main logic IC (MIC) from the four output N-channel power MOSFETs. This results in lower thermal resistance and greater efficiency. PWM control allows constant-current control of output while reducing heat generation and power losses by synchronous rectification. The rich set of protection features helps to realize low component counts, and high performance-to-cost power management.

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  • Power supply voltages, VBB: 46 V(max), 10 to 44 V normal operating range
  • Maximum output currents: 1 A, 1.5 A, 2 A
  • Clock-in drive between 2 phase and 2 W 1-2 step (full to eighth step modes)
  • Built-in Detection Resistance feature for motor current detection
  • All STA7130MPR series variants are pin-compatible
  • ZIP type 18-pin molded package (STA package)
  • Self-excitation PWM current control with fixed off-time: automatic 3-level PWM off-time shifting, based on the
  • current setting ratio
  • Built-in synchronous rectification circuit reduces losses at
  • PWM switching
  • Synchronous PWM chopping function prevents motor noise in Hold mode
  • Sleep mode for reducing the IC input current in stand-by state
  • Built-in protection circuitry against opens/shorts in motor coil
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Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
STA7130MPR 18-lead ZIP -20°C to 80°C Yes View Data New Contact your
local sales rep
Check Stock
STA7131MPR 18-lead ZIP -20°C to 80°C Yes View Data New Contact your
local sales rep
Check Stock
STA7132MPR 18-lead ZIP -20°C to 80°C Yes View Data New Contact your
local sales rep
Check Stock

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