GENERAL DEscriptION
The SGM3837 is designed for powering AMOLED (Active Matrix Organic LED) displays which require VELVDD, VELVSS and VAVDD. The device integrates two Boost converters, VO1 for VELVDD and VO3 for VAVDD, and one 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 pins (ASWIRE & ESWIRE).
The SGM3837 is available in a Green WLCSP-2.0× 2.0-25B package.
FEATURES
2.9V to 5.0V Input Supply Voltage Range
Synchronous Boost Converter (ELVDD)
4.6V to 5.0V Output Voltage with 100mV Steps
4.6V Default Output Voltage
600mA Output Current Capability
Synchronous Inverting Buck-Boost Converter (ELVSS)
-6.6V to -1.0V Output Voltage with 100mV Steps
-4.0V Default Output Voltage
-600mA Output Current Capability (VELVSS = -1.0V to -5.4V)
Synchronous Boost Converter (AVDD)
7.1V to 7.8V Output Voltage (SET = Low)
6.9V to 7.9V Output Voltage (SET = High)
7.6V Default Output Voltage
150mA Output Current Capability
Selectable ASWIRE Setting via SET pin
VIN and VOUT Bi-Directional Isolation
Short Circuit Protection (SCP)
Overload Protection
Thermal Shutdown
VELVSS Start-Up Delay: 10.4ms
Short Circuit and OLP Detection Time: 0.08ms
Available in a Green WLCSP-2.0×2.0-25B Package
APPLICATIONS
Smartphone & Tablet
Active Matrix OLED Display