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 (I
2
C
compatible) serial interface that operates at clock rates up to 400KHz.
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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 I
2
C address for the PT5662 is 0x18h.
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FEATURES
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102.3mA current sink
2-wire (I
2
C -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
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STRUCTURE
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Silicon CMOS IC
PT5662 PRE1.0
-1-
August, 2008