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| 型号： | A8509GLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 4/28页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR WHITE 4X120MA 24TSSOP |
| 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： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 300kHz ~ 800kHz |
| 电源电压： | 9 V ~ 40 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 24-TSSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 105°C |
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A8509
Wide Input Voltage Range, High Efficiency
4-Channel Fault Tolerant LED Driver
Pin-out Diagrams
SENP 1
GATE 2
VDR 3
COMP 4
MODE 5
24 SENN
23 PGND
22 LED1
21 NC
20 LED2
SENN 1
SENP 2
GATE 3
VDR 4
COMP 5
24 PGND
23 NC
22 LED1
21 LED2
20 NC
NC 6
NC 7
EN 8
PWM 9
FSET/SYNC 10
ISET 11
VDD 12
19 AGND
18 AGND
17 LED3
16 LED4
15 VIN
14 OVP
13 FAULT
MODE 6
EN 7
PWM 8
FSET/SYNC 9
ISET 10
VDD 11
FAULT 12
PAD
19 AGND
18 AGND
17 NC
16 LED3
15 LED4
14 VIN
13 OVP
Terminal List Table
LB Package
LP Package
Name
LB
Number
LP
Function
AGND
COMP
EN
ˉFˉ ˉA ˉUˉˉLˉ ˉTˉ
FSET/SYNC
GATE
ISET
LED1
LED2
LED3
LED4
MODE
18, 19
4
8
13
10
2
11
22
20
17
16
5
18, 19
5
7
12
9
3
10
22
21
16
15
6
LED ground.
Output of the error amplifier and compensation node. Connect a compensation network from this pin to ground.
Enable for the A8509.
This pin is used to indicate a fault condition. Connect a pull-up 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.
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 converters in the system.
Gate pin for driving external N-channel FET.
Connect the RISET resistor between this pin and ground to set the 100% LED current.
Connect the cathode of each LED string to these pins.
This pin is used to determine the mode of operation. MODE high tied to VDD allows parallel operation, and
MODE low is used for single IC operation.
NC
6, 7, 21
17, 20, 23 No connection.
OVP
PAD
PGND
PWM
SENN
SENP
VDD
VDR
VIN
14
n.a.
23
9
24
1
12
3
15
13
–
24
8
1
2
11
4
14
This pin is used to sense an Overvoltage (OVP) condition. Connect the ROVP resistor from VOUT to this pin to
adjust the overvoltage protection.
For TSSOP package, this exposed pad provides 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 solder pad.
Power ground for the internal gate driver circuit.
PWM dimming pin. Used to control the LED intensity by using pulse width modulation. The typical PWM
dimming frequency is in the range of 100 to 1000 Hz.
Negative sense line for boost switch current sensing.
Positive sense line for boost switch current sensing.
Output of internal LDO regulator. Connect a 0.1 μ F decoupling capacitor between this pin and ground.
Output of the gate driver bias voltage regulator. Connect a 1 μ F decoupling capacitor between this pin and
ground.
Input power to the A8509.
Allegro MicroSystems, LLC
115 Northeast Cutoff
4
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A8510 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Wide Input Voltage Range, High Efficiency |
| A8510GECTR-T | 功能描述:IC LED DRVR BCKLGHT/WHT 26QFN-EC 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 |
| 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 |
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