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| 型号： | A8512ELPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 4/18页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR WHT/RGB BKLGT 24TSSOP |
| 标准包装： | 8,000 |
| 拓扑： | 高端，低端，PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 300kHz ~ 1MHz |
| 电源电压： | 8 V ~ 24 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
A8512
LED Backlight Driver for LCD Monitors and Televisions
Pin-out Diagrams
EN 1
PGND 2
24 PWM
23 FAULT
EN 1
PGND 2
24 DGND
23 PWM
DRIVER
VREG7V
1
2
21 LED5
20 LED4
DRIVER 3
VREG7V 4
22 LED6
21 LED5
DRIVER 3
VREG7V 4
22 FAULT
21 LED6
NC
VIN
NC
VBIAS
OVP
3
4
5
6
7
PAD
19 LGND
18 LGND
17 LED3
16 LED2
15 LED1
VIN 5
AGND 6
AGND 7
VBIAS 8
OVP 9
SENSE2 10
20 LED4
19 LGND
18 LGND
17 LED3
16 LED2
15 LED1
VIN 5
VBIAS 6
NC 7
OVP 8
SENSE2 9
SENSE1 10
PAD
20 LED5
19 LED4
18 LGND
17 LED3
16 LED2
15 LED1
Package ET
SENSE1 11
ISET 12
14 COMP
13 FSET
Package LB
ISET 11
AGND 12
Package LP
14 COMP
13 FSET
Terminal List Table
ET
26
28
1
2
4
11, 12
6
7
8
9
10
13
14
15,16,17
18,19
20,21,22
23
24
25
3,5,27
PAD
Number
LB
1
2
3
4
5
6, 7
8
9
10
11
12
13
14
15,16,17
18,19
20,21,22
23
24
–
–
–
LP
1
2
3
4
5
12
6
8
9
10
11
13
14
15,16,17
18
19,20,21
22
23
24
7
PAD
Name
EN
PGND
DRIVER
VREG7V
VIN
AGND
VBIAS
OVP
SENSE2
SENSE1
ISET
FSET
COMP
LED1-3
LGND
LED4-6
ˉFˉ ˉA ˉ ˉUˉˉLˉ ˉTˉ
PWM
DGND
NC
PAD
Function
Device Enable. Apply logic-high signal to enable, low to shut down.
Power ground for external FET gate driver. Connect directly to R SC ground and to common star ground.
Gate driver terminal to drive external MOSFET.
Gate driver supply from internal voltage regulator. Bypass with 0.1 to 1 μ F ceramic capacitor to PGND.
Input supply voltage for the IC.
Analog (signal) GND for the IC. Connect to common star ground.
Bias supply voltage from internal regulator. Bypass with 0.1 to 1 μ F ceramic capacitor to AGND
Overvoltage Protection terminal. Connect this pin to output capacitor through a resistor R OVP to set the
OVP threshold.
Connect to ground side of current sense resistor R SC .
Connect to high side of current sense resistor R SC .
Sets 100% Current through LED strings; connect R ISET from ISET to AGND.
Sets switching frequency; connect R FSET from FSET to AGND.
Compensation pin; connect C COMP (1 μ F typical) capacitor to AGND.
LED current sinks; connect unused LEDx pins to ground to disable.
LED current sink ground; connect to common star ground.
LED current sinks; connect unused LEDx pins to ground to disable.
This open-drain output is pulled low when fault condition occurs; connect to external pull-up resistor.
Pulse width modulation LED-current control; apply logic level PWM for dimming.
Digital ground for input control signals (EN and PWM); connect to common star ground.
Not connected electrically.
Exposed pad. Solder to GND plane for enhanced thermal dissipation.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
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| A8513KLPTR-T | 功能描述:IC LED DRVR AUTO BCKLGHT 16TSSOP 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 |
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