Datasheet > HV892

HV892

更新时间： 2023-12-06 20:09:48

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
14页	1744K
描述
The HV892 liquid lens driver is controlled via an I2C interface, is capable of driving capacitive

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HV892 数据手册

HV892

Inductorless Liquid Lens Driver

Features

General Description

• Drives Capacitive Loads up to 200 pF

The HV892 liquid lens driver is controlled via an I²C

interface. It is capable of driving capacitive loads of up

to 200 pF and is compatible with 40 V_RMSto 60 V_RMS

lenses.

• Programmable Drive Amplitude (Compatible with

40 V_RMSto 60 V_RMSlenses)

• On-chip Boost Converter

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 µA. When

active, the HV892 draws less than 20 mA.

• No External Inductor

• I²C Interface

• Low Operating Current (≤ 20 mA)

• Low Standby Current (≤1 µA)

• Reduced EMI with Controlled Drive Edge

• 10-lead 4 x 4mm DFN package

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.

Applications

• Cellphone Cameras

• PDA and Ultracompact Cameras

• Bar Code Readers

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 reduce EMI.

• Web and Laptop Cameras

Package Type

10-lead DFN

(Top view)

GND1

VIN

SCL

OUT1

OUT2

GND2

SDA

VDD

Pads are at the bottom of the package. Center heat slug is at ground potential. See Table 2-1 for pin

information.

 2022 Microchip Technology Inc. and its subsidiaries

DS20005712A-page 1

12 3 4 5 6 7...14

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