MAX14514
MAX14514
PRODUCTIONDual Electroluminescent Lamp Driver
Industry's Most Flexible Dual EL Driver for Efficient and Bright Backlighting
- Part Models
- 2
- 1ku List Price
- Starting From $5.46
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Overview
- Dual ±15kV ESD-Protected EL Lamp Outputs
- 300VP-P Maximum Output for Highest Brightness
- +2.7V to +5.5V Input Voltage Range
- Resistor Adjustable Slew-Rate Control
- Resistor Adjustable Lamp and Switching Converter Frequencies
- DIM Input for Controlling Output Voltage Through DC Analog Voltage, PWM, or Resistor to GND
- Capacitor Adjustable Soft Turn-On/Off
- Low 150nA Shutdown Current
- Thermal Shutdown
- Space-Saving, 14-Pin, 3mm x 3mm TDFN Package
The MAX14514 is a high-voltage DC-AC converter ideal for driving two electroluminescent (EL) lamps. The MAX14514 features a +2.7V to +5.5V input range that allows the device to accept a wide variety of voltage sources, including single-cell lithium-ion (Li+) batteries. The lamp outputs of the device generate up to 300VP-P for maximum lamp brightness.
The MAX14514 utilizes an inductor-based boost converter to generate the high voltage necessary to drive EL lamps and allows the use of a 220µH inductor to effectively drive total combined lamp sizes of up to 20nF.
The MAX14514 uses a high-voltage full-bridge output stage to convert the high voltage generated by the boost converter to an AC waveform suitable for driving the EL panels. An external resistor controls the slew-rate of the rising and falling edges of the AC drive waveform to reduce audible noise output. The high-voltage outputs are ESD protected up to ±15kV Human Body Model, ±4kV IEC 61000-4-2 Air Gap Discharge, and ±4kV IEC 61000-4-2 Contact Discharge.
The MAX14514 features dimming/enable controls (DIM1, DIM2) for each output to allow the user to set the peak-to-peak output voltage with a PWM signal, a DC analog voltage, or a resistor connected from DIM_ to GND. The MAX14514 also provides a slow turn-on/-off feature that slowly ramps the output voltage applied to the lamp when enabled or disabled.
The MAX14514 enters a low-power shutdown mode when the EN and DIM_ inputs are connected to GND. The device also features thermal shutdown if the die temperature exceeds +158°C (typ).
The MAX14514 is available in a space-saving, 14-pin, 3mm x 3mm TDFN package and is specified over the extended -40°C to +85°C operating temperature range.
Applications
- Keypad Backlighting
- LCD Backlighting
- PDAs/Smartphones
Documentation
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX14514ETD+ | 14-Lead TDFN (3mm x 3mm x 0.75mm) | ||
| MAX14514ETD+T | 14-Lead TDFN (3mm x 3mm x 0.75mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Sep 23, 2026 - 2026-0082 ASSEMBLY |
||
| MAX14514ETD+ | PRODUCTION | |
| MAX14514ETD+T | PRODUCTION | |
|
Aug 2, 2025 - 2505 PIN/ERRATA |
||
| MAX14514ETD+ | PRODUCTION | |
|
Oct 4, 2018 - 1807 DESIGN,ELECTRICAL DA |
||
| MAX14514ETD+ | PRODUCTION | |
| MAX14514ETD+T | PRODUCTION | |
|
Jun 20, 2016 - 1612 ASSEMBLY |
||
| MAX14514ETD+ | PRODUCTION | |
| MAX14514ETD+T | PRODUCTION | |
|
Apr 20, 2026 - 2571D PIN/ERRATA |
||
| MAX14514ETD+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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