MAX17088 Internal-Switch Boost
max17088 internal-switch boost regulator with high-voltage level shifter for tft lcds
the max17088 includes a high-performance, step-up regulator; a high-speed operational amplifier; a digitally adjustable vcom calibration device with nonvolatile memory; an i²c interface; and a high-voltage, level-shifting scan driver. the device is optimized for thin-film transistor (tft) liquid-crystal display (lcd) applications. the max17088 is the successor to the max8798.
the step-up dc-dc converter provides the regulated supply voltage for panel source driver ics. the converter is a 1.2mhz current-mode regulator with an integrated 20v n-channel power mosfet. the high switching frequency allows the use of ultra-small inductors and ceramic capacitors. the current-mode control architecture provides fast transient response to pulsed loads typical of source driver loads. the step-up regulator features soft-start and current limit.
the high-current operational amplifier is designed to drive the lcd backplane (vcom). the amplifier features high output current (±150ma), fast slew rate (45v/µs), wide bandwidth (20mhz), and rail-to-rail inputs and outputs.
the programmable vcom calibrator is externally attached to the vcom amplifier's resistive voltage-divider and sinks a programmable current to adjust the vcom output-voltage level. an internal 7-bit digital-to-analog converter (dac) controls the sink current. the dac is ratiometric relative to boost and is guaranteed to be monotonic over all operating conditions. the calibrator ic includes an mtp to store the desired vcom voltage level. the 2-wire, i²c interface between the lcd panel and the programming circuit minimizes panel connector lead count and simplifies production equipment.
the high-voltage, level-shifting scan driver is designed to drive the tft panel gate drivers. its three outputs swing 65v (maximum) between +45v (maximum) and -25v (minimum) and can swiftly drive capacitive loads. to save power, the two complementary outputs are designed to allow charge sharing during state changes.
the max17088 is available in a 36-pin (6mm x 6mm), thin qfn package with a maximum thickness of 0.8mm for ultra-thin lcd panels.
key features
1.8v to 5.5v in supply voltage range
1.8v to 4.0v vdd input voltage range
1.2mhz current-mode step-up regulator
fast transient response
high-accuracy output voltage (1.5%)
built-in 20v, 1.9a, 150mω mosfet
high efficiency (> 85%)
digital soft-start
high-speed (20mhz) operational amplifier
±150ma output current
40v/µs slew rate
high-voltage drivers with scan logic
+45v to -25v outputs
output charge sharing
programmable vcom calibrator
7-bit adjustable current-sink output
i²c interface
mtp adjustment memory
thermal-overload protection
max17088 pdf datasheet (internal-switch boost regulator)
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the max17088 includes a high-performance, step-up regulator; a high-speed operational amplifier; a digitally adjustable vcom calibration device with nonvolatile memory; an i²c interface; and a high-voltage, level-shifting scan driver. the device is optimized for thin-film transistor (tft) liquid-crystal display (lcd) applications. the max17088 is the successor to the max8798.
the step-up dc-dc converter provides the regulated supply voltage for panel source driver ics. the converter is a 1.2mhz current-mode regulator with an integrated 20v n-channel power mosfet. the high switching frequency allows the use of ultra-small inductors and ceramic capacitors. the current-mode control architecture provides fast transient response to pulsed loads typical of source driver loads. the step-up regulator features soft-start and current limit.
the high-current operational amplifier is designed to drive the lcd backplane (vcom). the amplifier features high output current (±150ma), fast slew rate (45v/µs), wide bandwidth (20mhz), and rail-to-rail inputs and outputs.
the programmable vcom calibrator is externally attached to the vcom amplifier's resistive voltage-divider and sinks a programmable current to adjust the vcom output-voltage level. an internal 7-bit digital-to-analog converter (dac) controls the sink current. the dac is ratiometric relative to boost and is guaranteed to be monotonic over all operating conditions. the calibrator ic includes an mtp to store the desired vcom voltage level. the 2-wire, i²c interface between the lcd panel and the programming circuit minimizes panel connector lead count and simplifies production equipment.
the high-voltage, level-shifting scan driver is designed to drive the tft panel gate drivers. its three outputs swing 65v (maximum) between +45v (maximum) and -25v (minimum) and can swiftly drive capacitive loads. to save power, the two complementary outputs are designed to allow charge sharing during state changes.
the max17088 is available in a 36-pin (6mm x 6mm), thin qfn package with a maximum thickness of 0.8mm for ultra-thin lcd panels.
key features
1.8v to 5.5v in supply voltage range
1.8v to 4.0v vdd input voltage range
1.2mhz current-mode step-up regulator
fast transient response
high-accuracy output voltage (1.5%)
built-in 20v, 1.9a, 150mω mosfet
high efficiency (> 85%)
digital soft-start
high-speed (20mhz) operational amplifier
±150ma output current
40v/µs slew rate
high-voltage drivers with scan logic
+45v to -25v outputs
output charge sharing
programmable vcom calibrator
7-bit adjustable current-sink output
i²c interface
mtp adjustment memory
thermal-overload protection
max17088 pdf datasheet (internal-switch boost regulator)
魅族近年来不断关门 进行新一轮裁员，达30%
无线无源测温系统的有点与其它测温方式的对比
Type-C有望一统智能家居
一文教你看懂什么是PLC接线图
2016机器人市场遍地黄金 谁是年度“吸金王”？
MAX17088 Internal-Switch Boost
手机蓝牙的功能介绍
罗氏线圈在纳秒级电磁脉冲中的应用
一年一度的＂InterDrone商业无人机展“如期召开
富昌电子凭借可再生能源领域的突破性增长，获颁WAGO（万可）中国区最佳业绩奖
爱立信，见证全球通信行业的变迁
旋转编码器的基本原理解析
传华为车BU将发生重大战略调整，非核心业务或被缩减
汽车零部件系统集成企业华域汽车发布2021年报
微芯科技:家用独立式红外烟雾报警器控制方案
面板厂Q2调节产能度难关 布局新品Q3迎旺季
使用RX HMI解决方案满足新常态的需求
LED显示屏控制系统
总线制气体报警的三个主要布线方式
校园网络视频监控系统的结构组成及功能实现