Description

The IMP528EMA-T is an Electroluminescent (EL) lamp driver with on-chip functions for switch-mode power supply, high-frequency oscillator, high-voltage H-bridge lamp driver, and low-frequency oscillator. It is designed to drive EL lamps up to 50nF capacitance to high brightness, although it can still drive EL lamps with capacitances greater than 50nF, but with lower light output. With a regulated output voltage of 220V peak-to-peak, this circuit requires minimal external components, making it a convenient choice for various applications.

Specifications and features

- 220V peak-to-peak typical AC output voltage
- Low Power: 420µA typical VDD current
- Wide operating voltage range: 2.0V to 6.5V
- Large output load capability, suitable for lamps with more than 50nF capacitance
- Eliminates the need for an external protection resistor in series with the EL lamp
- Adjustable output lamp frequency for control of lamp color, lamp life, and power consumption
- Adjustable converter frequency to minimize power consumption
- High-Voltage CMOS Process
- MicroSO package option

Application Scenarios

The IMP528EMA-T is suitable for a wide range of applications, including but not limited to:
- GPS units, Pagers, and Cellular phones
- PDAs and Handheld computers
- Safety illumination
- Portable instrumentation
- Battery-operated displays
- LCD modules
- Toys

Comparison

- On-chip functions for switch-mode power supply and lamp driving
- Wide operating voltage range for versatility
- Large output load capability for driving lamps with capacitances greater than 50nF
- Eliminates the need for an external protection resistor
- Adjustable lamp frequency and converter frequency for customization
- High-Voltage CMOS Process ensures reliable performance
- MicroSO package option for space-constrained applications

- Light output of EL lamps with capacitances greater than 50nF may be lower