400mA Triple-Output AMOLED Display Power Supply
SGM3849
SGM3849.pdf
SGM3849.pdf
No.10760
FEATURES
• 2.9V to 4.5V Input Voltage Range
• Synchronous Boost Converter (AVDD)
5.8V to 7.9V Output Voltage (Programmable)
6.1V Default Output Voltage
1.2% Accuracy
100mA Output Current Capability
VIN to VOUT and VOUT to VIN Isolation
• Synchronous Boost Converter (ELVDD)
4.6V to 5.0V Output Voltage (Programmable)
4.6V Default Output Voltage
1.2% Accuracy
400mA Output Current Capability
External Output Voltage Sensing Pin for Load
Drop Compensation
VIN to VOUT and VOUT to VIN Isolation
• Synchronous Inverting Buck-Boost Converter(ELVSS)
-5.4V to -1.4V Output Voltage (Programmable)
-2.5V Default Output Voltage
1.6% Accuracy at -2.5V (±40mV)
400mA Output Current Capability
VIN to VOUT and VOUT to VIN Isolation
• Short Circuit Protection
• Thermal Shutdown
• VELVSS Start-Up Delay: 10ms
• Short Circuit and OLP Detect Time: 1ms
• Available in Green TQFN-3×3-16L Package
DESCRIPTION
The SGM3849 is designed to drive AMOLED displays (Active Matrix Organic Light Emitting Diode) requiring VAVDD, VELVDD and VELVSS. The device integrates a boost converter for VELVDD, an inverting buck-boost converter for VELVSS and a boost converter for VAVDD, which are suitable for battery operated products. The digital interface control pin (CTRL) allows programming VAVDD, VELVDD and VELVSS in digital steps.
The SGM3849 is available in Green TQFN-3×3-16L package. It operates over an ambient temperature range of -40℃ to +85℃
APPLICATION CIRCUIT
PIN CONFIGUTION
