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MP6604B 4.5-45V, 2.5A Simple Dual H-Bridge Driver (PHASE/EN) QFN-28
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pMPS MP6604B — Simple Dual H-Bridge Driver (PHASE/EN), 4.5-45V input, 2.5 A output, QFN-28./p
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MP6604B 4.5-45V, 2.5A Simple Dual H-Bridge Driver (PHASE/EN) QFN-28
The MPS MP6604B is a Simple Dual H-Bridge Driver (PHASE/EN). It operates from a 4.5 V to 45 V input and is rated for 2.5 A. It is supplied in a QFN-28 package.
The MP6604B is a dual H-bridge motor driver IC designed to drive stepper motors, brushed DC motors, and other loads.
Key Specifications
| Part Number | MP6604B |
| Function | Simple Dual H-Bridge Driver (PHASE/EN) |
| Input Voltage | 4.5 V to 45 V |
| Current Rating | 2.5 A |
| Package | QFN-28 |
| Ordering Codes | MP6604B |
Features
- 4.5V to 45V Operating Input Voltage (VIN) Range
- 2.5A Maximum Output Current (IOUT)
- Dual, Full H-Bridge Driver
- 150mΩ Low On Resistance per MOSFET
- Protection Functions Include: o Over-Current Protection (OCP) o Over-Voltage Protection (OVP) o Under-Voltage Lockout (UVLO) o Thermal Shutdown o Fault Indication Output
- Available in QFN-28 (4mmx5mm) and TSSOP-28EP Packages
Typical Application Circuit
Applications
- Bipolar Stepper Motors
- Stage Lighting
- 3D Printers
- Laser Printers and Copiers
Design Notes
- Set dead time to match the external FET turn-off, not the datasheet typical. Too little risks shoot-through, too much distorts the current waveform at low duty cycle.
- Use a Kelvin connection for the current-sense resistor; shared copper injects switching noise straight into the sense amplifier.
- The thermal pad is the only heat path for most packages — via-stitch it to a ground plane with at least 9 vias.
- PWM frequency trades switching loss against current ripple in the motor inductance; 20 kHz keeps the drive out of the audible band.
- Add a brake or coast path so regeneration during a fast stop does not pump the supply rail.
Common Questions
What input voltage does the MP6604B support?
4.5 V to 45 V. The rated output is 2.5 A.
Which package and ordering codes apply to the MP6604B?
QFN-28; order codes include MP6604B.
What are the defining features of the MP6604B?
4.5V to 45V Operating Input Voltage (VIN) Range 2.5A Maximum Output Current (IOUT)
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