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参数资料
| 型号： | A8512ELBTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 10/18页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR WHT/RGB BKLGT 24SOIC |
| 标准包装： | 3,000 |
| 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-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
A8512
LED Backlight Driver for LCD Monitors and Televisions
Normal Operation and Fault Conditions
V BAT = 12 V, Load = 6 strings, 18 LEDs each string, 56 mA per string, Output capacitors = 2 × 2.2 μ F ceramic, ROVP = 249 k Ω (OVP at 69 V)
Symbol
C1
C2
C3
C4
t
Parameter
V EN
V LEDx
V OUT
Total I LED
time
Units/Division
10 V
10 V
10 V
100 mA
2 ms
C4
C2,C3
V OUT
I LED
V LEDx
V EN
Normal startup with V BAT = 12 V,
(V OUT ≈ 58 V when cold)
C1
t
OVP tripped
Symbol
C1
C2
C3
C4
t
Parameter
V EN
V LEDx
V OUT
Total I LED
time
Units/Division
10 V
10 V
10 V
100 mA
2 ms
C4
C2,C3
C1
V OUT
I LED
V LEDx
V EN
t
Startup with one LED string open;
(OVP tripped at ≈ 69 V. Open string
removed from regulation. Remaining
strings operate normally.)
V OUT
I LED
OVP tripped
Symbol
C1
C2
C3
C4
t
Parameter
V EN
V LEDx
V OUT
Total I LED
time
Units/Division
10 V
10 V
10 V
100 mA
2 ms
Startup with all LED strings connected,
C4
C2,C3
C1
V LEDx
V EN
t
then one LED string becomes open;
(OVP tripped at ≈ 69 V. Open string
removed from regulation. Remaining
strings operate normally)
Symbol
C1
C2
C3
C4
t
Parameter
V FAULT
V LEDx
V OUT
Total I LED
time
Units/Division
10 V
10 V
10 V
100 mA
2 ms
OVP setpoint too high for the application.
C4
C2,C3
V OUT
I LED
V LEDx
V FAULT
LED short-
detect tripped
Startup with one string open; voltage
at LEDx pin exceeded Short-Detect
threshold (25 V) before OVP could be
tripped. IC shuts down.
C1
t
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
10
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相关代理商/技术参数 |
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| A8512ELPTR-T | 功能描述:IC LED DVR WHT/RGB BKLGT 24TSSOP 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 |
| A8513 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver |
| A8513KLPTR-1-T | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver |
| A8513KLPTR-2-T | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver |
| A8513KLPTR-3-T | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver |
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