参数资料
型号: A8514KLPTR-T
厂商: Allegro Microsystems Inc
文件页数: 42/42页
文件大小: 0K
描述: IC LED DVR WHT 4X80MA 16-ETSSOP
标准包装: 8,000
拓扑: PWM,SEPIC,升压(升压)
输出数: 4
内部驱动器:
类型 - 主要: 车载,背光
类型 - 次要: 白色 LED
频率: 580kHz ~ 2MHz
电源电压: 5 V ~ 40 V
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)裸露焊盘
供应商设备封装: 20-TSSOP-EP
包装: 带卷 (TR)
工作温度: -40°C ~ 125°C
A8514
Wide Input Voltage Range, High Efficiency
Fault Tolerant LED Driver
Whole Closed-Loop System Transfer Function Gain and
Phase Margin Measurement
The closed-loop whole system transfer function gain and phase
margin can be measured using the following steps:
1. Change R Z , C Z , and C P to be the same as the calculated values.
2. Follow same steps 2 through 5, shown above.
3. Hook the voltage probe V1 (blue) to A1, so the gain would be
G S (f) = B1 / A1.
4. Run the sweep.
5. When the sweep is completed, to read the phase margin at the
cross over frequency, f C , place the analyzer screen cursor at f C .
6. To read the gain margin, place the analyzer screen cursor where
the phase margin is zero.
The whole system closed loop is considered stable if the phase
margin is larger than 45°. It is also recommended to have the
gain margin as large as possible. Larger than around –7 dB
is sufficient.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
A-7
相关PDF资料
PDF描述
A8515GLPTR-T IC LED DVR WHT/RGB BKLGT 16TSSOP
A8516ELPTR-T IC LED DVR BACKLIGHT MON 24TSSOP
A8740EEETR-T IC PHOTOFLASH CAP CHARGER 8DFN
AC162049-2 MOD PROGR UNIV MPLAB ICD2 ICD3
AC162049 MODULE SOCKET FOR ICD2 DIP
相关代理商/技术参数
参数描述
A8515 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A8515 is a multi-output white LED (WLED) driver for LCD backlighting in consumer and industrial displays.
A8515GLPTR-T 功能描述:IC LED DVR WHT/RGB BKLGT 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压(升压),切换式电容器(充电泵) 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP,10-MSOP(0.118",3.00mm 宽) 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C
A8516 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A8516 is a multi-output WLED/RGB driver for backlighting LCD monitors and televisions.
A85169-000 制造商:TE Connectivity 功能描述:MPCB-20.0-0-E563 - Cable Rools/Shrink Tubing
A8516ELBTR-T 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A8516 is a multi-output WLED/RGB driver for backlighting LCD monitors and televisions.