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AT78C7015

Features: • Operates from Single Supply: 3.3V• Small Footprint 64-Pin TQFP Package or Flip Chip• Precision Low-voltage Monitor Circuitry for the Power Supply• Master Power on Reset• Serial Port Interface with Read-back Capability• Over-temperature Protection/War...

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SeekIC No. : 004290640 Detail

AT78C7015: Features: • Operates from Single Supply: 3.3V• Small Footprint 64-Pin TQFP Package or Flip Chip• Precision Low-voltage Monitor Circuitry for the Power Supply• Master Power on...

AT78C7015 Data Sheet

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Part Number:
AT78C7015
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/24

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Product Details

Description



Features:

• Operates from Single Supply: 3.3V
• Small Footprint 64-Pin TQFP Package or Flip Chip
• Precision Low-voltage Monitor Circuitry for the Power Supply
• Master Power on Reset
• Serial Port Interface with Read-back Capability
• Over-temperature Protection/Warning
• Shock Sensor Signal Processing
• On-chip 1.8V, 2.5V and -3V Regulators
• Low Power Consumption, 9 mA in Normal Run Mode
• Spindle Driver
   Commutator is Driven by a FLL for High Immunity to Jitter
   Programmable 10-bit DAC
   Adjustable Slew Rate Control
   External Startup Capability
   0.4A Current Capability with Ron = 1.4
   Digital Commutation Delay and Blanking
   Programmable Delay from BEMF Zero Crossing
   External INDEX Signal for Spin Lock
   Active Spindle Braking Capability
• VCM Driver
   0.4A Current Capability with Ron = 2.2
   Programmable 14-bit DAC
   Ramp Load/Unload Capability with 10-bit ADC
   Programmable VCM Current Controlled by Sense Resistor
• Packaging: Variety Available Depending on Customer Needs


Description

The AT78C7015 is a CMOS monolithic device that integrates Spindle and VCM controllers as well as power stages into one chip. The device operates from 3.3V power supply. The AT78C7015 is designed for a small-form-factor hard disk drive application.A precision low-voltage detection circuit monitors the power supply and initiates VCM retract at voltage fault condition. A 3-line serial port interface with read back capability provides interface to the microprocessor.

The Spindle driver features a transconductance amplifier, a current sense amplifier, power output drivers, sequencer, internal delay/masking logic, Spindle brake circuit, FLL, and charge-pump for locking the spindle to the programmed rotational speed.The VCM driver features a transconductance amplifier AT78C7015, differential input current sense amplifier, ramp load/unload capability, and power output amplifier.




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