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UA8954 Datasheet 4 CHANNEL BTL DRIVER

Manufacturer: Unisonic Technologies

Overview: UNISONIC TECHNOLOGIES CO., LTD UA8954 LINEAR INTEGRATED CIRCUIT 4 CHANNEL BTL DRIVER FOR CD/CD-ROM.

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General Description

PIN NO.

PIN NAME FUNCTION 1 VINFC Input for focus driver 2 CFCerr1 Connection with capacitor 3 CFCerr2 For error amplifier 4 VINSL+ Non inverting Input for OP-amp 5 VINSL- Inverting input for OP-amp 6 VOSL Output of OP-amp 7 VNFFC Feedback for focus driver 8 VCC VCC for pre-drive block and power block of sled 9 PVCC1 VCC for power block of loading 10 PGND GND for powr block 11 VOSL- Inverted output of sled 12 VOSL+ Non inverted output of sled 13 VOFC- Inverted output of focus 14 VOFC+ Non inverted output of focus 15 VOTK+ Non inverted output of tracking 16 VOTK- Inverted output of tracking 17 VOLD+ Non inverted output of loading 18 VOLD- Inverted output of loading 19 PGND GND for power block 20 VNFTK Feedback for tracking

Key Features

  • S.
  • Wide dynamic range, (4.0V (typ. ) at PreVcc=12V, PVcc=5V, RL=8Ω).
  • Level shift circuit built in.
  • Thermal-shut-down circuit built in.
  • UTC UA8954 is a 4 channel driver for optical disc motor driver. Dual channel current feedback type drivers are built in, in addition to dual channel motor drivers.
  • Stand-by mode built in.
  • Separating Vcc into Pre+Power of sled motor, Power of loading motor and Power of actuator, can make better power efficiency, by low supply volta.

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