参数资料
型号: A8510GECTR-T
厂商: Allegro Microsystems Inc
文件页数: 1/33页
文件大小: 0K
描述: IC LED DRVR BCKLGHT/WHT 26QFN-EC
标准包装: 1
拓扑: PWM,升压(升压)
输出数: 8
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 600kHz ~ 2.25MHz
电源电压: 5 V ~ 40 V
安装类型: 表面贴装
封装/外壳: 26-WFQFN 裸露焊盘
供应商设备封装: 26-QFN/MLP-EP(4x4)
包装: 标准包装
工作温度: -40°C ~ 105°C
其它名称: 620-1385-6
A8510
Wide Input Voltage Range, High Efficiency
Fault Tolerant LED Driver
Features and Benefits
? Integrated 2 MHz capable boost converter with 60 V DMOS
switch with OVPprotection
? Sync function to synchronize boost converter switching
frequencies up to 2.3 MHz
? LED current up to 40 mA per LED channel into 8 channels
? Drives up to 12 series LEDs in 8 parallel strings
(V f = 3.5 V, I f = 40 mA), V IN = 8 V, switching frequency
of 1 MHz
? Single EN/PWM pin interface for PWM dimming and
enable functions
? APWM pin for fine-tuning color adjustment and/or
maximizing contrast ratio
? Integrated driver for optional external PMOS input
disconnect switch
? Typical LED accuracy of 0.7% and 0.8% for
LED-to-LED matching
? Internal bias supply for single-supply operation
from 5 to 40 V
? Extensive protection features
Package: 26-pin QFN (suffix EC)
Approximate scale 1:1
Description
The A8510 is a multi-output white LED driver for LCD
backlighting. It integrates a current-mode boost converter with
internal power switch and 8 current sinks. The boost converter
can drive up to 96 LEDs with 12 LEDs at 40 mA per string.
The LED sinks can also be paralleled together to achieve even
higher LED currents, up to 320 mA. The A8510 can operate
from a single power supply, from 5 to 40 V.
If required, the A8510 can drive an external P-FET to
disconnect the input supply from the system in the event of a
fault. The A8510 provides protection against output short and
overvoltage, open or shorted diode, open or shorted LED pin,
and overtemperature. A dual level cycle-by-cycle current limit
function provides soft start and protects the internal current
switch against high current overloads.
The A8510 has a synchronization pin that allows PWM
switching frequencies to be synchronized in the range of
580 kHz to 2.3 MHz.
The device package is a 26-contact, 4 mm × 4 mm, 0.75 mm
nominal overall height QFN, with exposed pad for enhanced
thermal dissipation. It is lead (Pb) free, with 100% matte tin
leadframe plating.
Applications
? Industrial LCD displays
? Backlighting LCD displays
? Infotainment displays
Typical Application Diagram
V IN
R SC
0.056 Ω
Q1
L1
22 μ H
D1
2 A / 60 V
V OUT
C IN
4.7 μ F/ 50 V
100 k Ω
V C
R ADJ
590 Ω
C VDD
0.1 μ F
VGATE
VSENSE
VIN
VDD
SW SW
A8510
PAD
OVP
LED1
LED2
LED3
LED4
R OVP
169 k Ω
C OUT
4.7 μ F
50 V
FAULT
EN/PWM
APWM
ISET
R ISET
8.25 k Ω
R FSET
25.5 k Ω
FSET/SYNC
AGND PGND PGND
LED5
LED6
LED7
LED8
COMP
C P
120 pF
R Z
120 Ω
C Z
0.47 μ F
Figure 1. Typical Application Circuit showing VIN to GND
short protection using P-MOSFET sensing
A8510-DS, Rev. 2
相关PDF资料
PDF描述
A8511KLPTR-T IC LED DVR 150MA AUTO 28-TSSOP
A8512ELBTR-T IC LED DVR WHT/RGB BKLGT 24SOIC
A8513KLPTR-T IC LED DRVR AUTO BCKLGHT 16TSSOP
A8514KLPTR-T IC LED DVR WHT 4X80MA 16-ETSSOP
A8515GLPTR-T IC LED DVR WHT/RGB BKLGT 16TSSOP
相关代理商/技术参数
参数描述
A8511 制造商:ROCKWE 功能描述:
A8511KLPTR-T 功能描述:IC LED DVR 150MA AUTO 28-TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 特色产品:LM3445 TRIAC Dimmable LED Driver 标准包装:55 系列:PowerWise® 恒定电流:是 恒定电压:- 拓扑:PWM,降压(降压) 输出数:1 内部驱动器:无 类型 - 主要:- 类型 - 次要:高亮度 LED(HBLED) 频率:30kHz ~ 1MHz 电源电压:8 V ~ 12 V 输出电压:- 安装类型:表面贴装 封装/外壳:14-SOIC(0.154",3.90mm 宽) 供应商设备封装:14-SOICN 包装:管件 工作温度:-40°C ~ 125°C 产品目录页面:1285 (CN2011-ZH PDF) 其它名称:LM3445M
A8512 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:LED Backlight Driver for Medium/Large Displays
A8512EETTR-T 功能描述:IC LED DVR WHT/RGB BKLGT 28QFN 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
A8512ELBTR-T 功能描述:IC LED DVR WHT/RGB BKLGT 24SOIC 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