MAX749CSA+
ActiveDC-DC FLYBACK REGULATOR, ADJUSTABLE, 2 TO 6V IN, -100V OUT, SOIC-8, 70 °C
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MAX749CSA+
ActiveDC-DC FLYBACK REGULATOR, ADJUSTABLE, 2 TO 6V IN, -100V OUT, SOIC-8, 70 °C
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | MAX749CSA+ |
|---|---|
| Applications | LCD Display |
| Current - Supply | 60 µA |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 377 | $ 9.32 | |
| 6300 | $ 9.32 | |||
| Tube | 1 | $ 11.40 | ||
| 10 | $ 7.99 | |||
| 25 | $ 7.11 | |||
| 100 | $ 6.13 | |||
| 250 | $ 5.65 | |||
| 500 | $ 5.36 | |||
| 1000 | $ 5.12 | |||
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
Documents
Technical documentation and resources