SGM3842中文資料圣邦股份數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

GENERAL DESCRIPTION

The SGM3842 is designed for powering AMOLED

displays which requires VELVDD, VELVSS, VAVDD and VDVDD.

The device integrates two Boost converters, VO1 for

VELVDD and VO3 for VAVDD, a dual-phase inverting

Buck-Boost converter VO2 for VELVSS and a Buck

converter VO4 for VDVDD. Output voltages of all the four

converters can be programmed in digital steps through

the digital interface control pins (SWIRE1 & SWIRE2).

The SGM3842 is available in a Green WLCSP-2.5×2.9-

42B package.

FEATURES

● 2.9V to 4.8V Input Supply Voltage Range

● Synchronous Boost Converter (ELVDD)

? 4.6V to 5.2V Output Voltage with 100mV Steps

? 4.6V Default Output Voltage

? 0.8% Accuracy at 4.6V

? 1A Output Current Capability

? Output Voltage Sensing Pin for Path Loss

Compensation (FB1)

● Synchronous Inverting Buck-Boost Converter

(ELVSS)

? -10V to -1.4V Output Voltage with 100mV Steps

? -5.0V Default Output Voltage

? 1% Accuracy at -5V

? 1A Output Current Capability at -5.4V

? 660mA Output Current Capability at -9V

● Synchronous Boost Converter (AVDD)

? 5.5V to 8.0V Output Voltage with 100mV Steps

? 7.0V Default Output Voltage

? 0.7% Accuracy at 7.0V

? 150mA Output Current Capability

● Synchronous Buck Converter (DVDD)

? 0.8V to 1.5V Output Voltage with 25mV Steps

? 1.2V Default Output Voltage

? 1.1% Accuracy at 1.2V

? 300mA Output Current Capability

● VIN and VOUT Bi-Directional Isolation

● Short Circuit Protection (SCP)

● Overload Protection

● Thermal Shutdown

● VELVSS Start-Up Delay: 6ms

● Short Circuit and OLP Detection Time: 1.2ms

● Available in a Green WLCSP-2.5×2.9-42B Package

APPLICATIONS

Smartphones & Tablets

Active Matrix OLED Displays