SGM3852中文資料圣邦股份數(shù)據(jù)手冊PDF規(guī)格書

GENERAL DESCRIPTION

The SGM3852 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 two Buck converters VO1 for

VELVDD and VO4 for VDVDD, one Boost converter VO3 for

VAVDD, one dual-phase inverting Buck-Boost converter

VO2 for VELVSS 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 I 2 C interface.

The SGM3852 is available in a Green WLCSP-3.2×2.8-

56B package.

FEATURES

● 3.0V to 5.0V Input Supply Voltage Range

● Synchronous Buck Converter VO1 (ELVDD)

? 2.0V to 3.0V Output Voltage with 100mV Steps

? 2.8V Default Output Voltage

? 1% Accuracy at 2.8V

? 1.4A Output Current Capability

● Synchronous Inverting Buck-Boost Converter

VO2 (ELVSS)

? -2V to -12V Output Voltage with 50mV Steps

? -4.8V Default Output Voltage

? 0.4% Initial Accuracy at -4.8V

? 1.45A Output Current Capability @-4V

? 1A Output Current Capability @-6.8V

? 730mA Output Current Capability @ -10V

? 590mA Output Current Capability @-12V

● Synchronous Boost Converter VO3 (AVDD)

? 5.5V to 7.9V Output Voltage with 100mV Steps

? 6.5V Default Output Voltage

? 1% Accuracy at 6.5V

? 250mA Output Current Capability

● Synchronous Buck Converter VO4 (DVDD)

? 0.8V to 1.5V Output Voltage with 10mV Steps

? 1.0V/1.2V/1.3V Default Output Voltage Options

? 0.5% Initial Accuracy at 1.2V

? 400mA Output Current Capability

● Synchronous Inverting Buck-Boost Converter

VO5 (VGL)

? -5V to -15V Output Voltage with 100mV Steps

? -11V Default Output Voltage

? 1% Accuracy at -11V

? 40mA Output Current Capability

● VIN and VOUT Bi-Directional Isolation for ELVSS/

AVDD/VGL

? Each VIN Supports Discrete Power Supply

● I

2

C Interface

● Under-Voltage Lockout (UVLO)

● All Channels Soft-Start

● All Channels Fast Discharge Function (FD)

● All Channels Short Circuit Protection (SCP)

● All Channels Over-Circuit Protection (OCP)

● Over-Temperature Protection (OTP)

● Overload Protection (OLP)

● Start-Up Short Detection (SSD)

● VELVSS Start-Up Delay: 5.7ms

● Short Circuit and OLP Detection Time: 1ms

● Available in a Green WLCSP-3.2×2.8-56B Package

APPLICATIONS

Smartphones & Tablets

Folding-Screen Phones

LTPO2.0 AMOLED Displays

Tandem AMOLED Displays