GENERAL DEscriptION
The SGM3836A is designed for powering AMOLED displays which require VAVDD, VELVDD and VELVSS. The device integrates two boost converters, VO1 for VELVDD and VO3 for VAVDD, and an 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 (CTRL).
The SGM3836A is available in a Green TQFN-3×3-16L package. It operates over an ambient temperature range of -40℃ to +85℃.
FEATURES
2.9V to 4.5V Input Voltage Range
Synchronous Boost Converter (ELVDD)
4.6V to 5.0V Output Voltage with 100mV Steps
4.6V Default Output Voltage
1% Accuracy
Output Voltage Sensing Pin for Path Loss Compensation (FBS)
Synchronous Inverting Buck-Boost Converter (ELVSS)
-5.4V to -1.4V Output Voltage with 100mV Steps
-2.5V Default Output Voltage
1.2% Accuracy at -2.5V
ELVDD & ELVSS Combined Output Current Capability
Up to 800mA at 4.6V/-2.5V (VIN = 3.1V)
Up to 780mA at 4.6V/-2.7V (VIN = 3.1V)
Up to 750mA at 4.6V/-3.0V (VIN = 3.1V)
Up to 630mA at 4.6V/-4.0V (VIN = 3.1V)
Up to 510mA at 4.6V/-5.4V (VIN = 3.1V)
Synchronous Boost Converter (AVDD)
5.8V to 7.9V Output Voltage with 300mV Steps
6.1V Default Output Voltage
1% Accuracy
100mA Output Current Capability
VIN and VOUT Bi-Directional Isolation
Short Circuit Protection (SCP)
Overload Protection
Thermal Shutdown
VELVSS Start-Up Delay: 10ms
Short Circuit and OLP Detect Time: 1ms
Available in a Green TQFN-3×3-16L Package
APPLICATIONS
Smartphones & Tablets
Active Matrix OLED Displays