STA6940M MFG:Sanken
STA6940M D/C:22+
STA6940M Packeging:ZIP18
STA6940M Note:Original and new in stock Brushed DC Motor Driver IC With PWM Control
Description
Combining low-power CMOS-compatible logic with high-current, high-voltage power MOSFET outputs, the STA6940M provides complete control and drive for brush DC motors. It provides internal fixed off time, pulse-width modulation (PWM) control of the output current, rated for 4 A normal operating level.
The CMOS 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 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 providing fixed off-time dual decay modes. The internal charge pump ensures full power availability for switching.
Functional Block Diagram
Features and Benefits
- Power supply voltage, VBB, 44 V maximum, 10 to 40 V normal operating range
- Logic supply voltage, VDD, 3 to 5.5 V compatible
- Output current, IO, 4 A average, 8 A maximum
- Output elements are all N-channel MOSFETs to reduce losses
- Internal charge pump
- Forward, reverse, free, and brake control modes available
- Constant-current control:
- Off-time 35 µs, fixed (Slow Decay mode)
- Internal Overcurrent Protection (OCP) circuitry
- Off-time 142 µs fixed (Fast Decay mode)
- Internal Thermal Shutdown (TSD) circuitry
- ZIP type 18-pin fully-molded package (STA package)
Supplier
FROM: Company Name: Aunytor Electronic (HK) Co.,Ltd
Contact Person: Charlotte
Skype: Aunytor
whatsapp：+86 13537622113
Email: carrot@aunytorchips.com