Datasheet Texas Instruments LP8557 — 数据表
制造商 | Texas Instruments |
系列 | LP8557 |
平板电脑高效LED背光驱动器
数据表
LP8557 High-Efficiency LED Backlight Driver For Tablets datasheet
PDF, 1.7 Mb, 修订版: B, 档案已发布: Dec 18, 2015
从文件中提取
价格
状态
LP8557AYFQR | LP8557AYFQT | LP8557IAYFQR | LP8557IAYFQT | |
---|---|---|---|---|
Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) |
Manufacture's Sample Availability | No | No | Yes | Yes |
打包
LP8557AYFQR | LP8557AYFQT | LP8557IAYFQR | LP8557IAYFQT | |
---|---|---|---|---|
N | 1 | 2 | 3 | 4 |
Pin | 16 | 16 | 16 | 16 |
Package Type | YFQ | YFQ | YFQ | YFQ |
Industry STD Term | DSBGA | DSBGA | DSBGA | DSBGA |
JEDEC Code | S-XBGA-N | S-XBGA-N | S-XBGA-N | S-XBGA-N |
Package QTY | 3000 | 250 | 3000 | 250 |
Carrier | LARGE T&R | SMALL T&R | LARGE T&R | SMALL T&R |
Device Marking | D40 | D40 | D41 | D41 |
Thickness (mm) | .42 | .42 | .42 | .42 |
Pitch (mm) | .4 | .4 | .4 | .4 |
Max Height (mm) | .675 | .675 | .675 | .675 |
Mechanical Data | 下载 | 下载 | 下载 | 下载 |
参数化
Parameters / Models | LP8557AYFQR | LP8557AYFQT | LP8557IAYFQR | LP8557IAYFQT |
---|---|---|---|---|
Number of Channels | 6 | 6 | 6 | 6 |
Duty Cycle(Max), % | 100 | 100 | 100 | 100 |
LED | 48 | 48 | 48 | 48 |
LED Current Per Channel, mA | 25 | 25 | 25 | 25 |
Operating Temperature Range, C | -30 to 85 | -30 to 85 | -30 to 85 | -30 to 85 |
Package Group | DSBGA | DSBGA | DSBGA | DSBGA |
Package Size: mm2:W x L, PKG | See datasheet (DSBGA) | See datasheet (DSBGA) | See datasheet (DSBGA) | See datasheet (DSBGA) |
Peak Efficiency, % | 93 | 93 | 93 | 93 |
Rating | Catalog | Catalog | Catalog | Catalog |
Shutdown Current(Typ), uA | 0.001 | 0.001 | 0.001 | 0.001 |
Special Features | CABC,Edge Rate Control | CABC,Edge Rate Control | CABC,Edge Rate Control | CABC,Edge Rate Control |
Switching Frequency(Max), kHz | 1000 | 1000 | 1000 | 1000 |
Topology | Boost | Boost | Boost | Boost |
Type | Inductive | Inductive | Inductive | Inductive |
Vin(Max), V | 5.5 | 5.5 | 5.5 | 5.5 |
Vin(Min), V | 2.7 | 2.7 | 2.7 | 2.7 |
Vout(Max), V | 28 | 28 | 28 | 28 |
Vout(Min), V | 7 | 7 | 7 | 7 |
生态计划
LP8557AYFQR | LP8557AYFQT | LP8557IAYFQR | LP8557IAYFQT | |
---|---|---|---|---|
RoHS | Compliant | Compliant | Compliant | Compliant |
应用须知
- Schottky Diode Selection in Asynchronous Boost ConvertersPDF, 491 Kb, 档案已发布: Sep 6, 2016
Asynchronous boost converters require a Schottky diode as the rectifying element due to the diode's lowforward voltage and fast turn-on time. Because of these characteristics asynchronous boost converterscan have as good as, or better efficiency, than synchronous boost converters. This is especially true whenthe boost conversion ratios (VOUT/VIN) are high, and the Schottky diode conduction t - Inductor Selection in Boost Converters for LCD Backlight ApplicationsPDF, 764 Kb, 档案已发布: Oct 24, 2016
White LED drivers for LCD back-light applications are often designed for battery-powered devices. This makes circuit size and efficiency crucial. Because of this, selecting the optimal inductor is one of the mostimportant aspects of the design. This application note discusses the important parameters of the inductorand how to select the right inductor for the application.
模型线
系列: LP8557 (4)
制造商分类
- Semiconductors> Power Management> LED Driver> Backlight