System Motor Driver IC for Slim Drivers (3 sensors)

ROHM's slim drive 3-sensor motor driver ICs BH5510KV, BH5510KVT, BH5511KV contain the necessary circuitry to drive notebook PC and recorder disk drives. ROHM provides models that incorporate the latest technology to ensure quiet spindle motor operation and stability at low revolution speeds.

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* This is a standard-grade product.
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Product Detail

Part Number | BH5510KVT-E2
Status | Recommended
Package | TQFP48V
Unit Quantity | 1500
Minimum Package Quantity | 1500
Packing Type | Taping
RoHS | Yes






Number of Channels


Operating Temperature (Min.)[°C]


Operating Temperature (Max.)[°C]


Package Size [mm]

9x9 (t=1.2)


・The spindle motor driver achieves a low noise by S!PWM×2 super low noise drive method of an original Rohm.
・The spindle motor driver built the gain switch function in, and it enabled the low-speed stability rotation.
・Actuator coil driver is no dead zone system and linearity is good.
・Actuator coil driver can be optimized the frequency characteristic matched to the load characteristic by external R.C.
・When the tilt coil load is not used by the set, it is possible to use it as an eject motor driver.
・STBY input is three state input, and only the spindle motor drive can be operated.

Design Resources


Technical Articles

Schematic Design & Verification

  • Method for Monitoring Switching Waveform
  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • What Is Thermal Design
  • Basics of Thermal Resistance and Heat Dissipation
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Notes for Temperature Measurement Using Thermocouples
  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Forward Voltage of PN Junction
  • Thermal Resistance
  • Precautions When Measuring the Rear of the Package with a Thermocouple

Packaging & Quality

Package Information

  • Package Information
  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)