19-4240; Rev 0; 8/08
High-Voltage Liquid Lens Driver
MAX415
General Description
Features
o Small Footprint for Placement Inside Camera
Modules
The MAX14515 high-voltage liquid lens driver features a
2
high-voltage differential output controlled through an I C
interface. The MAX14515 uses a charge-pump-based
boost converter and integrated H-bridge to provide a
compact lens driver solution with minimal external com-
ponents to achieve a small overall footprint suitable for
small space constraints inside camera modules.
o 47V Maximum Output (C
= 220pF)
RMS
LENS
2
o I C-Compatible Interface for Setting Output
Voltage
o 8-Bit Output Voltage Resolution
o Guaranteed Monotonic Output
The MAX14515 features an 8-bit monotonic DAC with a
single differential high-voltage output controlled by a
2-wire I C interface to set the amplitude. The high-volt-
2
o
15kV Human Body Model ESD Protection on
Outputs
age outputs are capable of delivering up to 42V
(min) into a 220pF liquid lens load at 1.0kHz (min).
RMS
o Low 500nA (max) Shutdown Current
o +2.7V to +5.5V Input Voltage Range
o Space-Saving, 8-Bump WLP (1mm x 2mm) Package
The MAX14515 also features two power-saving modes
(shutdown mode and sleep mode) to minimize power
consumption when the device is inactive. Shutdown
mode places the device in a low-power state that resets
2
all registers and disables the I C interface to reduce cur-
rent below 500nA (max). In sleep mode, the power-on
reset circuit remains active. If no activity is detected on
2
the I C interface, current consumption is less than 3µA.
The MAX14515 operates over the +2.7V to +5.5V sup-
ply voltage range, ideal for portable applications using
lithium ion battery sources. The MAX14515 is specified
over the -40°C to +85°C extended temperature range
and is available in a small (1mm x 2mm) 8-bump WLP
package.
Ordering Information
Applications
TOP
MARK
PART
TEMP RANGE PIN-PACKAGE
Autofocus Camera Modules
Barcode Readers
Webcams
MAX14515EWA+ -40°C to +85°C
8 WLP
+AAA
+Denotes a lead-free/RoHS-compliant package.
Pin Configuration
Typical Application Circuit
2.8V
TOP VIEW
(BUMP SIDE DOWN)
0.1μF
1μF
1.8V
MAX14515
1
2
3
4
+
V
V
REF
DD
SCL
EN
GND
V
A
B
A
SDA
SCL
V
B
IMAGE
SIGNAL
PROCESSOR
LIQUID
LENS
MAX14515
SDA
V
V
V
DD
REF
B
V
EN
A
GND
WLP
1mm x 2mm
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.