GENERAL DEscriptION
The SGM3839 is designed for powering AMOLED displays which require VELVDD, VELVSS and VAVDD. The device integrates two Boost converters, VO1 for VELVDD and VO3 for VAVDD, and a dual-phase inverting Buck-Boost converter VO2 for VELVSS. Output voltages of all the three converters can be programmed in digital steps through the digital interface control pin (SWIRE).
The SGM3839 is available in a Green WLCSP-2.90×2.96-49B package.
FEATURES
2.5V to 4.8V Input Supply Voltage Range
Synchronous Boost Converter (ELVDD)
4.6V to 5.0V Output Voltage with 100mV Steps
4.6V Default Output Voltage
0.8% Accuracy at 4.6V
1200mA Output Current Capability (VIN ≥ 2.9V, VVO1 = 4.6V, VVO2 = -3V)
Output Voltage Sensing Pin for Path Lose Compensation (FBS)
Synchronous Inverting Buck-Boost Converter (ELVSS)
-6.0V to -0.8V Output Voltage with 100mV Steps
-3.0V Default Output Voltage
1% Accuracy at -3V
1200mA Output Current Capability (VIN ≥ 2.9V, VVO1 = 4.6V, VVO2 = -3V)
Synchronous Boost Converter (AVDD)
5.5V to 7.9V Output Voltage with 100mV Steps
7.3V Default Output Voltage
1% Accuracy at 7.3V
150mA Output Current Capability
VIN and VOUT Bi-Directional Isolation
Short Circuit Protection (SCP)
Overload Protection
Thermal Shutdown
VELVSS Start-Up Delay: 5.5ms
Short Circuit and OLP Detect Time: 0.68ms
Available in a Green WLCSP-2.90×2.96-49B Package
APPLICATIONS
Smart Phone, Tablet, Notebook
Active Matrix OLED Display