参数资料
型号: A8515GLPTR-T
厂商: Allegro Microsystems Inc
文件页数: 24/34页
文件大小: 0K
描述: IC LED DVR WHT/RGB BKLGT 16TSSOP
标准包装: 8,000
拓扑: PWM,升压(升压)
输出数: 2
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 600kHz ~ 2.5MHz
电源电压: 5 V ~ 40 V
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm)裸露焊盘
供应商设备封装: 16-TSSOP-EP
包装: 带卷 (TR)
工作温度: -40°C ~ 105°C
A8515
Fault Mode Table ( continued)
Wide Input Voltage Range, High Efficiency
Fault Tolerant LED Driver
Fault Name
Type
Active
Fault
Flag
Set
Description
Boost
Disconnect
Switch
Sink
driver
Fault occurs when the FSET current goes above
150% of maximum current. The boost will stop
FSET Short Protection
Auto-restart
Always
Yes
switching, the disconnect switch will turn off and
the IC will disable the LED sinks until the fault is
Off
Off
Off
removed. When the fault is removed the IC will try
to restart with soft-start.
Overvoltage
Protection
Auto-restart
Always
No
Fault occurs when OVP pin exceeds V OVP(th)
threshold. The A8515 will immediately stop
switching to try to reduce the output voltage. If the
output voltage decreases then the A8515 will restart
switching to regulate the output voltage.
Stop
during
OVP
event.
On
On
Off for
Fault occurs when the LED pin voltage exceeds
shorted
LED Short Protection
Auto-restart
Always
No
5.1 V. When the LED short protection is detected
the LED string above the threshold will be removed
On
On
pins.
On
from operation.
for all
others.
Overtemperature
Protection
VIN UVLO
Auto-restart
Auto-restart
Always
Always
No
No
Fault occurs when the die temperature exceeds the
overtemperature threshold, typically 165°C.
Fault occurs when V IN drops below V UVLO , typically
3.90 V. This fault resets all latched faults.
Off
Off
Off
Off
Off
Off
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
24
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