LC898217XC: Auto Focus (AF) Controller with 128 Byte EEPROM

LC898217XC is the AF control LSI. It consists of 1 system of feedback circuit for AF control. Built-in equalizer circuit using digital operation. Built-in A/D converter, D/A converter, Constant Current Driver. LC898217XC contains an internal EEPROM. It easily accomplishes Hall calibration and power-on sequence. Also LC898217XC has fast settling function for quickly moving focus lens. This is suitable for small & thinner camera module.

Features
  • Built-in equalizer circuit using digital operation- AF control equalize circuit- Any coefficient can be specified by 2-wire serial I/F (TWIF)
  • 2-wire serial interface(The communication protocol is compatible with I2C)
  • Built-in Constant Current Driver- 10-bit, 110 mA- 1-channel
  • Built-in A/D converter- 11-bit- Input 1-channel
  • Built-in D/A converter- 8-bit- Output 2-channel (Hall offset, Constant current bias)
  • Built-in VGA- Hall Amp- 1-channel
  • Built-in EEPROM : 128 byte (16 byte/page)
  • Built-in OSC : 24 MHz
  • Supply Voltage : VDD (2.6 V to 3.3 V)
Benefits
  • Auto focus performance is good at focusing time and suitable for any types of actuators
  • Auto sequence for moving initial location after power-on
  • Auto Hall calibration
  • Suitable for small & thinner camera module
  • Minimal external component
  • Current driver makes a camera module less noise
Applications
  • Auto Focus (AF) Camera Module
End Products
  • Smart phone
  • Tablet
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Auto Focus (AF) Controller & DriverLC898217XC/D (213kB)1Nov, 2016
Package Drawings (1)
Document TitleDocument ID/SizeRevision
WLCSP10 1.04x2.04567LF (32.5kB)B
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
LC898217XC-MHActivePb-free Halide freeWLCSP-10567LF1Tape and Reel4000$0.88
Specifications
ProductVM Min (V)VM Max (V)VCC Min (V)VCC Max (V)IO Max (A)IO Peak Max (A)Step ResolutionControl TypeFeedback MethodCurrent SenseRegulator OutputFault DetectionFlyback ProtectionRDS(on) Typ (Ω)
LC898217XC-MH2.63.32.63.30.115SerialNoIntegrated Active1.4
Auto Focus (AF) Controller & Driver (213kB) LC898217XC
WLCSP10 1.04x2.04 LC898217XC