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4,499 pcs
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4499 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The MAX8831EWE+T is a highly integrated solution for display and keypad backlighting in portable devices. It features a 60mA, 28V PWM DC-DC step-up converter with up to 90% efficiency, operating over an input voltage range of 2.7V to 5.5V.
This device includes five independently programmable LED current regulators. Two regulators (LED1, LED2) support display backlighting with currents up to 25mA, utilizing a 128-step logarithmic dimming scheme via I2C. The other three regulators (LED3, LED4, LED5) are for keypad backlighting or signal indicators, programmable up to 5mA with a 32-step logarithmic dimming scheme.
The I2C interface allows control over on/off states, LED current, and ramp timers. The MAX8831 also incorporates protection features such as open/short LED detection, output overvoltage protection, and thermal shutdown, enhancing reliability. It is available in a compact 2mm x 2mm, 16-bump WLP package, suitable for space-constrained applications.
Key electrical characteristics include a 2MHz switching frequency, enabling small external components. The converter automatically transitions to pulse-skipping mode at light loads for improved efficiency. It offers an ultra-low shutdown current of 0.1µA, extending battery life.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.17 | $0.17 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The input voltage range is 2.7V to 5.5V.
The maximum output voltage is 28V.
The switching frequency is 2MHz.
The operating temperature range is -40°C to 85°C (TA).
The LED current is programmed using an I2C interface.
The MAX8831EWE+T has 5 LED outputs.
The MAX8831EWE+T is a DC-DC Step-Up (Boost) regulator.