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A8514KLPTR-T

更新时间： 2024-01-03 05:41:42
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器
页数 文件大小 规格书
35页 1288K
描述
The A8514 is a multi-output white LED driver for small-size LCD backlighting.

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A8514KLPTR-T 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：TSSOP
包装说明：TSSOP-20针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.71
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PDSO-G20
JESD-609代码：e3长度：6.5 mm
湿度敏感等级：2复用显示功能：NO
功能数量：1区段数：48
端子数量：20最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HTSSOP封装等效代码：TSSOP20,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260电源：16 V
认证状态：Not Qualified筛选级别：AEC-Q100
座面最大高度：1.2 mm子类别：Display Drivers
最大压摆率：10 mA最大供电电压：40 V
最小供电电压：5 V标称供电电压：16 V
表面贴装：YES温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：4.4 mm
最小 fmax：2.5 MHzBase Number Matches：1

A8514KLPTR-T 数据手册

 浏览型号A8514KLPTR-T的Datasheet PDF文件第1页浏览型号A8514KLPTR-T的Datasheet PDF文件第2页浏览型号A8514KLPTR-T的Datasheet PDF文件第4页浏览型号A8514KLPTR-T的Datasheet PDF文件第5页浏览型号A8514KLPTR-T的Datasheet PDF文件第6页浏览型号A8514KLPTR-T的Datasheet PDF文件第7页 
Wide Input Voltage Range, High Efficiency  
Fault Tolerant LED Driver  
A8514  
Thermal Characteristics may require derating at maximum conditions, see application information  
Characteristic  
Symbol  
Test Conditions*  
Value  
Unit  
On 2-layer PCB, 3 in2.  
40.0  
ºC/W  
Package Thermal Resistance  
RθJA  
On 4-layer PCB based on JEDEC standard  
(estimated)  
29.0  
ºC/W  
*Additional thermal information available on the Allegro website  
GATE  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
SW  
1
2
VSENSE  
VIN  
OVP  
PGND  
PGND  
PGND  
VDD  
3
FAULT  
4
Pin-out Diagram  
COMP  
5
APWM  
6
PWM/EN  
FSET/SYNC  
ISET  
LED1  
LED2  
LED3  
LED4  
7
8
9
AGND  
10  
Terminal List Table  
Number  
Name  
Function  
1
GATE  
Output gate driver pin for external P-channel FET control.  
Connect this pin to the negative sense side of the current sense resistor RSC. The threshold  
voltage is measured as VIN – VSENSE . There is also a fixed current sink to allow for trip  
threshold adjustment.  
2
3
4
VSENSE  
VIN  
Input power to the A8514 as well as the positive input used for current sense resistor.  
Indicates a fault condition. Connect a 100 kΩ resistor between this pin and the required logic  
level voltage. The pin is an open drain type configuration that will be pulled low when a fault  
occurs.  
¯¯¯¯¯¯¯¯¯  
FAULT  
Output of the error amplifier and compensation node. Connect a series RZ-CZ network from  
this pin to ground for control loop compensation.  
5
6
7
COMP  
APWM  
Analog trimming option for dimming. Applying a digital PWM signal to this pin adjusts the  
internal ISET current.  
PWM dimming pin, used to control the LED intensity by using pulse width modulation. Also  
used to enable the A8514.  
PWM/EN  
Frequency/synchronization pin. A resistor RFSET from this pin to ground sets the switching  
frequency. This pin can also be used to synchronize two or more A8514s in the system. The  
maximum synchronization frequency is 2.3 MHz.  
8
FSET/SYNC  
9
10  
ISET  
AGND  
LEDx  
VDD  
Connect the RISET resistor between this pin and ground to set the 100% LED current.  
LED signal ground.  
11,12,13,14  
15  
Connect the cathodes of the LED strings to these pins.  
Output of internal LDO; connect a 0.1 μF decoupling capacitor between this pin and ground.  
Power ground for internal DMOS device.  
16,17.18  
PGND  
Overvoltage Condition (OVP) sense; connect the ROVP resistor from VOUT to this pin to  
adjust the overvoltage protection.  
19  
20  
–
OVP  
SW  
The drain of the internal DMOS switch of the boost converter.  
Exposed pad of the package providing enhanced thermal dissipation. This pad must be  
connected to the ground plane(s) of the PCB with at least 8 vias, directly in the pad.  
PAD  
Allegro MicroSystems, Inc.  
115 Northeast Cutoff  
3
Worcester, Massachusetts 01615-0036 U.S.A.  
1.508.853.5000; www.allegromicro.com  
1234567...35

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