The ADD8754 is optimized for use in TFT LCD applications, requiring only external charge pump components to provide all the requirements for panel power, V_COM, and gate modulation. Included in a single chip are a high frequency step-up dc-to-dc switching regulator, logic voltage regulator, V_COM amplifier, and gate pulse modulation circuitry.

The step-up dc-to-dc converter provides up to 20 V output and includes a 2 A internal switch. Either a 650 kHz or 1.2 MHz step-up switching regulator frequency can be chosen, allowing easy filtering and low noise operation. It achieves 93% efficiency and features soft start to limit the inrush current at startup.

The internal voltage regulator operates with an input voltage range of 3 V to 5.5 V and delivers a load current of up to 350 mA. Three selectable output voltages are available: 2.5 V, 2.85 V, and 3.3 V.

The proprietary V_COM amplifier can deliver a peak output current of 300 mA and is specifically designed to drive TFT panel loads.

The gate pulse modulator allows shaping of the TFT gate high voltage to improve image quality. The integrated switches provide the ability to independently control the delay and slope for the gate drive voltage.

The ADD8754 is offered in a 24-lead, Pb-free LFCSP package and is specified over the industrial temperature range of −40 to +85°C.

Applications

TFT LCD Panels for Monitors, TVs, and Notebooks

Part#	V Span Max	Iq per Amplifier (max)	-3dB Bandwidth	Aol	I out Capability	Capacitive Load	Slew Rate	Vos	Ib	Price* (1000-4999)	Product Description
AD8560	16V	1mA	8MHz	n/a	35mA	n/a	8V/µs	2mV	80nA	$1.01	16 V, 5-Channel, Rail - to - Rail Buffer Amplifier for LCD Monitor Applications
ADD8504	6.5V	0.95mA	n/a	n/a	20mA	1nF	7V/µs	20mV	2nA	$0.79	4 - Channel LCD Gamma Reference Buffer in 16 - Lead TSSOP
ADD8505	6.5V	0.88mA	n/a	n/a	20mA	1nF	7V/µs	20mV	2nA	$0.86	5 - Channel LCD Gamma Reference Buffer in 20 - Lead TSSOP
ADD8506	6.5V	0.85mA	n/a	n/a	20mA	1nF	7V/µs	20mV	2nA	$0.95	6 - Channel Muxed Input, LCD Gamma Reference Buffer in 24 - Lead TSSOP
ADD8754	18V	n/a	1.95MHz	n/a	300mA	n/a	105V/µs	19mV	50nA	$1.23	VCOM Amplifier with LCD Panel Power & Gate Pulse Modulation Ciruitry
AD8531	6V	1.25mA	3MHz	98dB	250mA	1nF	5V/µs	25mV	5pA	$0.27	250 mA Output Current, Rail-Rail In/Out, Single-Supply Operational Amplifier
AD8509	-	944µA	n/a	n/a	20mA	1000pF	7V/µs	20mV	50nA	$3.73	9-Channel, Multiplexed Input, LCD Driver
AD8532	6V	1.25mA	3MHz	70dB	250mA	10nF	5V/µs	25mV	5pA	$0.42	Dual, 250 mA Output Current, Rail-Rail In/Out, Single-Supply Operational Amplifier
AD8511	-	773µA	n/a	n/a	20mA	1000pF	7V/µs	20mV	50nA	$3.94	11-Channel, Multiplexed Input, LCD Driver
AD8534	6V	1.25mA	3MHz	70dB	250mA	10nF	5V/µs	25mV	5pA	$0.59	Quad, 250 mA Output Current, Rail-Rail In/Out, Single-Supply Operational Amplifier
AD8519	12V	1.2mA	8MHz	100dB	25mA	600pF	2.9V/µs	600µV	300nA	$0.91	8 MHz, Rail-Rail Out, Operational Amplifier
ADD8702	16V	1.25mA	n/a	n/a	10mA	n/a	n/a	n/a	n/a	-	12-Channel Gamma Buffers with VCOM Buffer
AD8529	12V	1.2mA	8MHz	100dB	25mA	600pF	2.9V/µs	600µV	300nA	$1.21	Dual, 8 MHz, Rail-Rail Out, Operational Amplifier
ADD8708	16.5V	0.9mA	4.5MHz	n/a	150mA	200pF	6V/µs	5mV	500nA	-	18 - Channel Gamma Buffer with Regulator
ADD8701	16V	1mA	4.5MHz	n/a	35mA	n/a	6V/µs	4mV	500nA	-	Low Cost, 16 V, 12-Channel Gamma Buffer w/ Integrated High Drive Amplifier
AD8565	16V	850µA	5MHz	80dB	35mA	1nF	6V/µs	2mV	600nA	$0.55	16V, Single-Supply, Rail-Rail In/Out, Operational Amplifier
AD8568	16V	850µA	6MHz	n/a	35mA	1µF	6V/µs	2mV	600nA	-	Rail-Rail In/Out, Single-Supply Buffer Amplifier
ADD8709	16.5V	0.94mA	4.5MHz	n/a	15mA	200pF	6V/µs	5mV	1.5µA	-	18-Channel Gamma Buffer with Regulator
AD8566	16V	850µA	5MHz	80dB	35mA	1nF	6V/µs	2mV	600nA	$0.70	16V, Single-Supply, Rail-Rail In/Out, Dual Operational Amplifier
ADD8710	18V	0.91mA	5MHz	n/a	10mA	n/a	8V/µs	4mV	500nA	$1.82	10-Channel Gamma Buffer with Vcom Driver
AD8567	16V	850µA	5MHz	80dB	35mA	1nF	6V/µs	2mV	600nA	$0.92	16V, Single-Supply, Rail-Rail In/Out, Quad Operational Amplifier
ADD8706	16.5V	1.35mA	6MHz	80dB	15mA	n/a	6V/µs	2mV	400nA	$1.01	16 V, (5 + 1)-Channel Operational Amplifier
AD8614	18V	1.1mA	5.5MHz	100dB	30mA	2nF	7.5V/µs	1mV	80nA	$1.15	Rail-Rail In/Out, 70 mA Output Current, Single-Supply Op Amp
AD8024	24V	17mA	200MHz	280dB	50mA	1nF	390V/µs	2mV	1µA	$4.27	Quad, 350 MHz, 24 V Amplifier
AD8569	16V	850µA	6MHz	n/a	35mA	1µF	6V/µs	2mV	600nA	-	Quad, Rail-Rail In/Out, Single-Supply Buffer Amplifier
AD8641	26V	290µA	3.5MHz	103dB	12mA	500pF	3V/µs	50µV	0.25pA	$1.45	Low Power, Rail-to-Rail Output Precision JFET Amplifier
AD8644	18V	1.1mA	5.5MHz	100dB	30mA	2nF	7.5V/µs	1mV	80nA	$2.30	Quad, Rail-Rail In/Out, 70 mA Output Current, Single-Supply Op Amp
AD8570	16V	850µA	6MHz	n/a	35mA	1µF	6V/µs	2mV	600nA	-	Octal, Rail-Rail In/Out, Single-Supply Buffer Amplifier

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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• Automotive: -40 to +125 degrees Celsius

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