SGM3846
SGM3846 is Triple-Output AMOLED Display Power Supply manufactured by SG Micro.
DESCRIPTION
The SGM3846 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 SGM3846 is available in 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 (AVDD)
- 5.8V to 7.9V Output Voltage (Programmable)
- 6.1V Default Output Voltage
- 1.2% Accuracy
- 100m A 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
- 400m A Output Current Capability
- External Output Voltage Sensing Pin for Load
Drop pensation
- 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 (±40m V)
- 400m A 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
APPLICATIONS
Smartphones Small Size Tablets Active Matrix OLED Displays ≤ 8"
TYPICAL APPLICATION
VIN = 2.9V to 4.5V
Enable VAVDD
Enable VELVDD/VELVSS Program device
Enable Discharge
4.7μH
1 SW1
VO1 3 FBS...
