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MAX14515
High-Voltage Liquid Lens Driver
The Smallest Liquid Lens Driver for Small Camera Modules
Document Ref.: 19-4240; Rev 0; 2008-08-20
This page last modified: 2008-08-20
Maxim > Products > [Power and Battery Management]
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Status
Active: In Production.
Description
The MAX14515 high-voltage liquid lens driver features a high-voltage differential output
controlled through an I²C interface. The MAX14515 uses a charge-pump-based boost converter
and integrated H-bridge to provide a compact lens driver solution with minimal external
components to achieve a small overall footprint suitable for small space constraints inside camera modules.
The MAX14515 features an 8-bit monotonic DAC with a single differential high-voltage output controlled by a 2-wire I²C
interface to set the amplitude. The high-voltage outputs are capable of delivering up to 42V
RMS
(min) into a 220pF liquid lens
load at 1.0kHz (min).
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 all registers and disables the I²C
interface to reduce current below 500nA (max). In sleep mode, the power-on reset circuit remains active. If no activity is
detected on the I²C interface, current consumption is less than 3µA.
The MAX14515 operates over the +2.7V to +5.5V supply 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.
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Key Features
z Small Footprint for Placement Inside Camera Modules
z 47V
RMS
Maximum Output (C
LENS
= 220pF)
z I²C-Compatible Interface for Setting Output Voltage
z 8-Bit Output Voltage Resolution
z Guaranteed Monotonic Output
z ±15kV Human Body Model ESD Protection on Outputs
z Low 500nA (max) Shutdown Current
z +2.7V to +5.5V Input Voltage Range
z Space-Saving, 8-Bump WLP (1mm x 2mm) Package
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