MAX17126 Multi-Output Power Su
max17126 multi-output power supply with vcom amplifier and high-voltage gamma reference for lcd tvs
the max17126 generates all the supply rails for thin-film transistor liquid-crystal display (tft lcd) tv panels operating from a regulated 12v input. it includes a step-down and a step-up regulator, a positive and a negative charge pump, an operational amplifier, a high-accuracy high-voltage gamma reference, and a high-voltage switch control block. the max17126 can operate from input voltages from 8v to 16.5v and is optimized for an lcd tv panel running directly from 12v supplies.
the step-up and step-down switching regulators feature internal power mosfets and high-frequency operation allowing the use of small inductors and capacitors, resulting in a compact solution. the step-up regulator provides tft source driver supply voltage, while the step-down regulator provides the system with logic supply voltage. both regulators use fixed-frequency current-mode control architectures, providing fast load-transient response and easy compensation. a current-limit function for internal switches and output-fault shutdown protects the step-up and step-down power supplies against fault conditions. the max17126 provides soft-start functions to limit inrush current during startup. in addition, the max17126 integrates a control block that can drive an external p-channel mosfet to sequence power to source drivers.
the positive and negative charge-pump regulators provide tft gate-driver supply voltages. both output voltages can be adjusted with external resistive voltage-dividers. a logic-controlled, high-voltage switch block allows the manipulation of the positive gate-driver supply.
the max17126 includes one high-current operational amplifier designed to drive the lcd backplane (vcom). the amplifier features high output current (±200ma), fast slew rate (45v/µs), wide bandwidth (20mhz), and rail-to-rail outputs.
key features
8.0v to 16.5v in supply-voltage range selectable frequency (500khz/750khz) current-mode step-up regulator fast load-transient response high-accuracy output voltage (1.0%) built-in 20v, 4.2a, 100mω mosfet high efficiency adjustable soft-start adjustable current limit low duty-cycle operation (13.2vin - 13.5v avdd) current-mode step-down regulator fast load-transient response built-in 20v, 3.2a, 100mω mosfet high efficiency 3ms internal soft-start adjustable positive charge-pump regulator adjustable negative charge-pump regulator integrated high-voltage switch with adjustable turn-on delay high-speed operational amplifier ±200ma short-circuit current 45v/µs slew rate high-accuracy reference for gamma buffer ±1% feedback voltage up to 30ma load current low-dropout voltage 0.5v at 60ma external p-channel gate control for avdd sequencing pgood comparator input undervoltage lockout and thermal-overload protection 48-pin, 7mm x 7mm, thin qfn package applications/uses
lcd tv panels
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MAX17126 Multi-Output Power Su
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the max17126 generates all the supply rails for thin-film transistor liquid-crystal display (tft lcd) tv panels operating from a regulated 12v input. it includes a step-down and a step-up regulator, a positive and a negative charge pump, an operational amplifier, a high-accuracy high-voltage gamma reference, and a high-voltage switch control block. the max17126 can operate from input voltages from 8v to 16.5v and is optimized for an lcd tv panel running directly from 12v supplies.
the step-up and step-down switching regulators feature internal power mosfets and high-frequency operation allowing the use of small inductors and capacitors, resulting in a compact solution. the step-up regulator provides tft source driver supply voltage, while the step-down regulator provides the system with logic supply voltage. both regulators use fixed-frequency current-mode control architectures, providing fast load-transient response and easy compensation. a current-limit function for internal switches and output-fault shutdown protects the step-up and step-down power supplies against fault conditions. the max17126 provides soft-start functions to limit inrush current during startup. in addition, the max17126 integrates a control block that can drive an external p-channel mosfet to sequence power to source drivers.
the positive and negative charge-pump regulators provide tft gate-driver supply voltages. both output voltages can be adjusted with external resistive voltage-dividers. a logic-controlled, high-voltage switch block allows the manipulation of the positive gate-driver supply.
the max17126 includes one high-current operational amplifier designed to drive the lcd backplane (vcom). the amplifier features high output current (±200ma), fast slew rate (45v/µs), wide bandwidth (20mhz), and rail-to-rail outputs.
key features
8.0v to 16.5v in supply-voltage range selectable frequency (500khz/750khz) current-mode step-up regulator fast load-transient response high-accuracy output voltage (1.0%) built-in 20v, 4.2a, 100mω mosfet high efficiency adjustable soft-start adjustable current limit low duty-cycle operation (13.2vin - 13.5v avdd) current-mode step-down regulator fast load-transient response built-in 20v, 3.2a, 100mω mosfet high efficiency 3ms internal soft-start adjustable positive charge-pump regulator adjustable negative charge-pump regulator integrated high-voltage switch with adjustable turn-on delay high-speed operational amplifier ±200ma short-circuit current 45v/µs slew rate high-accuracy reference for gamma buffer ±1% feedback voltage up to 30ma load current low-dropout voltage 0.5v at 60ma external p-channel gate control for avdd sequencing pgood comparator input undervoltage lockout and thermal-overload protection 48-pin, 7mm x 7mm, thin qfn package applications/uses
lcd tv panels
运动无线蓝牙耳机哪款好，运动蓝牙跑步耳机品牌排行榜
马斯克：今年年底前推出全自动驾驶技术
详细介绍RF芯片测试夹具在微波测量中的应用及仿真对比
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在FPC上贴装SMD有哪些方案
MAX17126 Multi-Output Power Su
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5G技术助力医疗发展将步入高速发展期
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