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HV892

Inductorless Liquid Lense Driver

Status: In Production

Features:

  • Drives capacitive loads up to 200pF
  • Programmable drive amplitude
  • (compatible with 40VRMS to 60VRMS lenses)
  • On-chip boost converter
  • No external inductor
  • I2C interface
  • Low operating current (≤20mA)
  • Low standby current (≤1.0µA)
  • Controlled drive edge reduces EMI
  • 10-Lead 4x4mm DFN Package
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The HV892 liquid lens driver is controlled via an I2C interface, is capable of driving capacitive loads of up to 200pF, and is compatible with 40VRMS to 60VRMS lenses. A single byte (AMP) written to the HV892 controls the operation of the driver. Setting AMP = 01h to FFh controls output amplitude in 255 monotonic steps. Setting AMP = 00h causes the HV892 to go into low power standby mode, consuming less than 1.0µA. When active, the HV892 draws less than 20mA. A charge pump boost converter integrated on-chip provides the high voltage necessary for driving the lens. No external inductors or diodes are needed. Two ceramic chip capacitors are the only external components required for a complete lens driver circuit. An H-bridge output stage provides AC drive to the lens, allowing the use of a single high voltage boost converter while providing alternating polarity to the lens. Controlled rising and falling edges on the drive waveform reduces EMI. The HV892 is offered in a 10-Lead 4x4mm DFN package.

Additional Features
  • Drives capacitive loads up to 200pF
  • Programmable drive amplitude
  • (compatible with 40VRMS to 60VRMS lenses)
  • On-chip boost converter
  • No external inductor
  • I2C interface
  • Low operating current (≤20mA)
  • Low standby current (≤1.0µA)
  • Controlled drive edge reduces EMI
  • 10-Lead 4x4mm DFN Package
Parametrics
Name
Value
DC/DC
Internal charge pump
Input Voltage min (V)
2.65
Input Voltage max (V)
5.5
Output Voltage min (VRMS)
10
Output Voltage max (VRMS)
60
Load min (pF)
100
Load max (pF)
200
Package
DFN-10

Documents

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User Guides

06/25/2014
580KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
HV892DB1 Liquid Lens Driver Demo Board
HV892DB1 Liquid Lens Driver Demo Board ( ADM00931 )

The HV892DB1 liquid lens driver demoboard is controlled via an I2C interface, is capable of driving capacitive loads of up to 200pF, and is compatible with 40VRMS to 60VRMS lenses. A charge pump boost converter integrated on-chip provides the high voltage necessary for driving the lens. No external inductors or diodes are needed.

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Product
Price 5K
$1.46

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
HV892K7-G
0.041100
0.139091
10
WDFN
4x4x0.8mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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