Datasheet > SGM3804

SGM3804

更新时间： 2023-09-03 20:28:41

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
14页	854K
描述
Single Inductor, Positive/Negative Dual Output, Buck/Boost Converter

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SGM3804 数据手册

SGM3804

Single Inductor, Positive/Negative

Dual Output, Buck/Boost Converter

GENERAL DESCRIPTION

FEATURES

The SGM3804 generates both positive and negative

precision regulated voltage power sources, with a

patent pending control scheme for single inductor dual

output converter. Outputs are programmable in 100mV

steps in 2.4V to 6.4V range, which are commonly used

in drivers for LCD displays and AMOLED displays, as

well as in any other circuits requiring both rails, with

different loading on each rail. The device is equipped

with I²C interface. With input in the range of 2.7V to

5.5V, the device is optimized for loading 100mA in

boost-inverter mode and also works in buck-inverter

mode.

● Single Inductor for Positive & Negative Outputs

● High Efficiency in Wide Output Loading Range

● Outputs Programmable with I²C Interface

● 2.4V to 6.4V Programmable for Both Outputs

● Factory Programmable Default Outputs:

SGM3804-0: V_PO= +5.4V/V_NO= -5.4V

SGM3804-1: V_PO= +4.6V/V_NO= -3.5V

SGM3804-2: V_PO= +5.0V/V_NO= -5.0V

SGM3804-3: V_PO= +4.6V/V_NO= -2.4V

SGM3804-4: V_PO= +6.4V/V_NO= -6.4V

● 1.6MHz Switching plus Pulse-Skip Operation

● Configurable Stop Active Discharge

● Slim Package Fits into *65132 Footprint

The SGM3804 is available in a Green WLCSP-

1.7×1.51-12B package. It operates over an ambient

temperature range of -40℃ to +85℃.

APPLICATIONS

AMOLED/LCD Smart-Phones/Pads/Media-Players

Wearable Device Display/Audio

AFE with Positive & Negative Rails

TYPICAL APPLICATION

4.7µH

SWN

ENN

SWP

VIN

Enable

2.7V ~ 5.5V

2.4V ~ 6.4V

-2.4V ~ -6.4V

^ENPSGM3804

SCL

I²C I/F

SDA

C_N

C_P

C_IN

10µF

22µF

Figure 1. Typical Application Circuit

SG Micro Corp

OCTOBER 2016 –REV. A. 1

www.sg-micro.com

12 3 4 5 6 7...14

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