|
|
| ▶ General Description |
| The DD336 is a triple DC/DC converter to provide the power of AMOLED (Active Matrix Organic Light Emitting Diode) display panel. The device integrates 300mA boost converter for VO1, 300mA inverting converter for VO2, and 80mA boost converter for VO3, all of which are suitable for battery operated products. In addition, it works in pulse skipping mode during light load condition. The enable pins allow turning off the device so reducing the current consumption to less than 1uA. The device include soft start with controlled inrush current limit, thermal shutdown and short circuit protection. The digital control pin (CTRL) allows programming VO3 and VO2 in digital steps. The DD336 uses a novel technology enabling excellent line and load regulation.
|
| ▶ Features |
Two Step-up converters and an Inverting converter
- 2.9V to 4.5V input voltage range
- Synchronous rectification for all DC/DC converters
- VVO1 = 4.6V, high accuracy output voltage
- External output sense pin for VO1
- Excellent VO1 line transient regulation
- ENVO3 pin for VO3 boost converter shutdown mode
- Low quiescent current in shutdown mode
- Programmable VVO2 = -1.4V to -5.4V in 100mV steps, Default = -4.0V
- Programmable VVO3 = 5.8V to 8.8V in 300mV steps, Default = 7.6V
- 300mA output current for VO1 and VO2 and 80mA output current for VO3
- 1.45MHz PWM mode control switching frequency
- Soft-start with inrush current protection
- Short-circuit protection
- Over-temperature protection
- Over-current protection
- Fast outputs discharge after shutdown
- Under voltage lockout function
- 3㎜ x 3㎜ x 0.6㎜ 16 Pin QFN Package
|
| ▶ Application |
| - Active Matrix OLED Displays |
| ▶ Typical Application |
 |
|
