Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Auto Focus Motor Driver IC Preliminary PT5662 DESCRIPTION The PT5662 is a single 10-bit DAC with 102.3mA output current sink capability. It features an internal reference and operates from a single 2.3V to 5.5V supply. The DAC is controlled via a 2-wire (I2C compatible) serial interface that operates at clock rates up to 400KHz. P P The PT5662’s unique and proprietary Slope Control Modes allow the user to customize the output transient response thereby overcoming mechanical ringing associated with reduced form factor voice coil motors (VCMs). The PT5662 incorporates a power-on reset circuit, which ensures that DAC output powers up to 0V and remains there until a valid write takes place. It has a power-down feature that reduces the current consumption of the device to 1μA maximum. The PT5662 is designed for autofocus, image stabilization, and optical zoom applications in camera phones, digital still cameras, and camcorders. The PT5662 also has many industrial applications, such as controlling temperature, light, and movement, over the range -40℃ to +85℃ without derating. The I2C address for the PT5662 is 0x18h. P P FEATURES • • • • • • • • • • • • • • • 102.3mA current sink 2-wire (I2C -compatible) 1.8V serial interface 10-bit resolution DAC Integrated current sense resistor Selectable output slope control 2.3V to 5.5V power supply Guaranteed monotonic over all codes Power-down to 0.5μA typical Internal reference Built-in UVLO shutdown circuit Built-in thermal shutdown circuit Power-down function Power-on reset Available in 2 x 3 array, 1.114mm x 1.614mm WLCSP packages Available in WCSP-6 and DFN-8 P P STRUCTURE • Silicon CMOS IC PT5662 PRE1.0 -1- August, 2008 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Auto Focus Motor Driver IC Preliminary PT5662 APPLICATIONS CONSUMER APPLICATIONS • • • • • • • • • • • • • • Lens autofocus Image stabilization Optical zoom Shutters Iris/exposure Neutral density (ND) filters Lens covers Camera phones Digital still cameras Camera modules Digital video cameras/camcorders Camera-enabled devices Security cameras Web/PC cameras INDUSTRIAL APPLICATIONS • • • • • • • • Heater controls Fan controls Cooler (Peltier) controls Solenoid controls Valve controls Linear actuator controls Light controls Current loop controls PT5662 PRE1.0 -2- August, 2008 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Auto Focus Motor Driver IC Preliminary PT5662 BLOCK DIAGRAM PT5662 PRE1.0 -3- August, 2008 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Auto Focus Motor Driver IC Preliminary PT5662 PIN CONFIGURATION WCSP-6 DFN-8 PT5662 PRE1.0 -4- August, 2008 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Auto Focus Motor Driver IC Preliminary PT5662 PIN DESCRIPTION WCSP-6 Ball Name ISINK Xshutdown GND SDA VDD SCL Output current sink Power down, asynchronous power down signal Ground pin (Power/Analog/Digital ground) I2C interface signal Power supply I2C interface signal Ball No. A1 A2 B1 B2 C1 C2 Pin Name Xshutdown NC SDA SCL AGND VDD PGND ISINK Description Power down, asynchronous power down signal No connection I2C interface signal I2C interface signal Analog/Digital ground pin Digital supply voltage Power ground pin Output current sink Pin No. 1 2 3 4 5 6 7 8 B B Description P P P P DFN-8 B PT5662 PRE1.0 B P P P P -5- August, 2008