- 您现在的位置：买卖IC网 > Datasheet目录307 > A8514KLPTR-T (Allegro Microsystems Inc)IC LED DVR WHT 4X80MA 16-ETSSOP Datasheet资料下载
参数资料
| 型号： | A8514KLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/42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： | 是 |
| 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 |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页
A8514
Wide Input Voltage Range, High Efficiency
Fault Tolerant LED Driver
Features and Benefits
? AEC-Q100 Qualified
? Wide input voltage range of 5 to 40Vfor start/stop, cold
crank and load dump requirements
? Fully integrated LED current sinks and boost converter
with 60 V DMOS
? Sync function to synchronize boost converter switching
frequency up to 2.3 MHz, allowing operation above the
AM band
? Excellent input voltage transient response
? Single resistor primary OVP minimizes V OUT leakage
? Internal secondary OVP for redundant protection
? LED current of 80 mA per channel
? Drives up to 12 series LEDs in 4 parallel strings
? 0.7% to 0.8% LED to LED matching accuracy
? PWM and analog dimming inputs
? 5000:1 PWM dimming at 200 Hz
? Provides driver for external PMOS input disconnect switch
? Extensive protection against:
? Shorted boost switch or inductor
? Shorted FSET or ISET resistor
? Shorted output
? Open or shorted LED pin
? Open boost Schottky
? Overtemperature (OTP)
Package: 20-pin TSSOP with exposed
thermal pad (suffix LP)
Not to scale
Description
The A8514 is a multi-output white LED driver for small-size
LCD backlighting. It integrates a current-mode boost converter
with internal power switch and four current sinks. The boost
converter can drive up to 48 LEDs, 12 LEDs per string, at
80 mA. The LED sinks can be paralleled together to achieve
even higher LED currents, up to 320 mA. The A8514 can
operate with a single power supply, from 5 to 40 V, which
allows the part to withstand load dump conditions encountered
in automotive systems.
The A8514 can drive an external P-FET to disconnect the input
supply from the system in the event of a fault. The A8514
provides protection against output short and overvoltage,
open or shorted diode, open or shorted LED pin, shorted
boost switch or inductor, shorted FSET or ISET resistor, and
IC overtemperature. A dual level cycle-by-cycle current limit
function provides soft start and protects the internal current
switch against high current overloads.
The A8514 has a synchronization pin that allows PWM
switching frequencies to be synchronized in the range of
580 kHz to 2.3 MHz. The high switching frequency allows
the A8514 to operate above the AM radio band.
Continued on the next page…
Applications:
LCD backlighting or LED lighting for:
? Automotive infotainment
? Automotive cluster
? Automotive center stack
Typical Application Circuit
V IN
8 to 16 V
R SC
0.033 Ω
Optional
L1
10 μ H
D1
2 A / 60 V
V OUT
C IN
4.7 μ F
50 V
R ADJ
249 Ω
R C
20 Ω
C C
22 nF
Q1
GATE
VSENSE
SW
OVP
R OVP
137 k Ω
C OUT
4.7 μ F
50 V
100 k Ω
V C
C VDD
0.1 μ F
VIN
VDD
A8514
PAD
LED1
R ISET
8.25 k Ω
R FSET
10 k Ω
FAULT
PWM/EN
APWM
ISET
FSET/SYNC
AGND
LED2
LED3
LED4
COMP
PGND
C P
120 pF
R Z
150 Ω
C Z
0.47 μ F
Figure 1. Application with VIN to ground short protection, using optional P-MOSFET for input disconnect protection
A8514-DS, Rev. 5
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. |
发布紧急采购，3分钟左右您将得到回复。