SGM3854
1.3A PMIC for LTPO and Tandem AMOLED Display
The SGM3854 is designed for powering LTPO (Low Temperature Polycrystalline Oxide) and Tandem structure AMOLED displays which require VELVDD, VELVSS, VAVDD, VDVDD and VVGL.
The device integrates one Buck-Boost converters VO1 for VELVDD, one dual-phase inverting Buck-Boost converter VO2 for VELVSS, one Boost converter VO3 for VAVDD, one Buck converter VO4 for VDVDD and one single-phase inverting Buck-Boost converter VO5 for VVGL. Output voltages of all the five converters can be programmed in digital steps through the I2C interface.
The SGM3854 is available in a Green WLCSP- 2.8×2.8-49B package.
- 2.5V to 5.0V Input Supply Voltage Range
- Buck-Boost Converter VO1 (ELVDD)
- 2.0V to 5.0V Output Voltage with 50mV Steps
- 4.6V Default Output Voltage (Boost Mode)
- 2.8V Default Output Voltage (Buck Mode)
- 1% Accuracy at 4.6V
- Synchronous Inverting Buck-Boost Converter VO2 (ELVSS)
- -12.0V to -0.5V Output Voltage with 25mV Steps
- -2.4V Default Output Voltage
- ±25mV Variation at -2.4V
- ELVDD-ELVSS Combined Output Current Capability (VVO1 = 2.8V)
- 1.15A @ VIN = 2.5V, VVO2 = -3.2V
- 1.2A @ VIN = 2.6V, VVO2 = -3.2V
- 1.3A @ VIN = 2.8V, VVO2 = -4.8V
- 0.7A @ VIN = 2.5V, VVO2 = -9.8V
- ELVDD-ELVSS Combined Output Current Capability (VVO1 = 4.6V)
- 0.85A @ VIN = 2.5V, VVO2 = -1.4V
- 0.95A @ VIN = 2.6V, VVO2 = -1.4V
- 1A @ VIN = 2.7V, VVO2 = -3V
- 0.75A @ VIN = 2.5V, VVO2 = -8V
- Synchronous Boost Converter VO3 (AVDD)
- 5.0V to 8.0V Output Voltage with 50mV Steps
- 6.5V Default Output Voltage
- 0.8% Accuracy at 6.5V
- 150mA Output Current Capability
- Synchronous Buck Converter VO4 (DVDD)
- 0.8V to 1.5V Output Voltage with 10mV Steps
- 1.05V Default Output Voltage (Set by VO4_SEL)
- ±16mV Variation at 1.05V
- 400mA Output Current Capability
- Synchronous Inverting Buck-Boost Converter VO5 (VGL)
- -12.5V to -5V Output Voltage with 100mV Steps
- -8.5V Default Output Voltage
- 0.7% Accuracy at -8.5V
- 30mA Output Current Capability
- VIN and VOUT Bi-Directional Isolation
- I2C Interface
- Under-Voltage Lockout (UVLO)
- All Channels Soft-Start
- All Channels Fast Discharge Function (FD)
- All Channels Short Circuit Protection (SCP)
- All Channels Over-Current Protection (OCP)
- Over-Temperature Protection (OTP)
- Overload Protection (OLP)
- Start-Up Short Detection (SSD)
- VELVSS Start-Up Delay: 5.8ms
- Short Circuit and OLP Detection Time: 1ms
Available in a Green WLCSP-2.8×2.8-49B Package
Smartphones & Tablets
Folding-Screen Phones
LTPS & LTPO1.0 AMOLED Displays
LTPO2.0 AMOLED Displays
Tandem AMOLED Displays
