Specification	MAX749ESA+T

Applications	LCD Display
Current - Supply	60 µA
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 C
Package / Case	0.154 in
Package / Case	8-SOIC
Package / Case	3.9 mm
Supplier Device Package	8-SOIC
Voltage - Supply [Max]	6 V
Voltage - Supply [Min]	2 V

MAX749 Series

Digitally Adjustable LCD Bias Supply

Part	Applications	Current - Supply	Supplier Device Package	Package / Case	Package / Case	Package / Case	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]
Analog Devices Inc./Maxim Integrated MAX749CSA+	LCD Display	60 µA	8-SOIC	0.154 in	8-SOIC	3.9 mm	6 V	2 V	Surface Mount	70 °C	0 °C
Analog Devices Inc./Maxim Integrated MAX749CSA	LCD Display	60 µA	8-SOIC	0.154 in	8-SOIC	3.9 mm	6 V	2 V	Surface Mount	70 °C	0 °C
Analog Devices Inc./Maxim Integrated MAX749CPA+	LCD Display	60 µA	8-PDIP		8-DIP (0.300" 7.62mm)		6 V	2 V	Through Hole	70 °C	0 °C
Analog Devices Inc./Maxim Integrated MAX749CSA+T	LCD Display	60 µA	8-SOIC	0.154 in	8-SOIC	3.9 mm	6 V	2 V	Surface Mount	70 °C	0 °C
Analog Devices Inc./Maxim Integrated MAX749ESA+T	LCD Display	60 µA	8-SOIC	0.154 in	8-SOIC	3.9 mm	6 V	2 V	Surface Mount	85 °C	-40 C
Analog Devices Inc./Maxim Integrated MAX749ESA+	LCD Display	60 µA	8-SOIC	0.154 in	8-SOIC	3.9 mm	6 V	2 V	Surface Mount	85 °C	-40 C
Analog Devices Inc./Maxim Integrated MAX749EPA	LCD Display	60 µA	8-PDIP		8-DIP (0.300" 7.62mm)		6 V	2 V	Through Hole	85 °C	-40 C
Analog Devices Inc./Maxim Integrated MAX749EPA+	LCD Display	60 µA	8-PDIP		8-DIP (0.300" 7.62mm)		6 V	2 V	Through Hole	85 °C	-40 C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	N/A	0	$ 7.22
		5000	$ 7.22
	Tape & Reel (TR)	2500	$ 6.78

Description

General part information

MAX749 Series

The MAX749 generates negative LCD-bias contrast voltages from 2V to 6V inputs. Full-scale output voltage can be scaled to -100V or greater, and is digitally adjustable in 64 equal steps by an internal digital-to-analog converter (DAC). Only seven small surface-mount components are required to build a complete supply. The output voltage can also be adjusted using a PWM signal or a potentiometer.A unique current-limited control scheme reduces supply current and maximizes efficiency, while a high switching frequency (up to 500kHz) minimizes the size of external components. Quiescent current is only 60µA max and is reduced to under 15µA in shutdown mode. While shut down, the MAX749 retains the voltage set point, simplifying software control. The MAX749 drives either an external P-channel MOSFET or a PNP transistor.ApplicationsCommunication SystemsLaptop ComputersNotebook ComputersPalmtop ComputersPDAs and Other Handheld DevicesPortable Data-Collection Terminals