参数资料
型号: A8516ELPTR-T
厂商: Allegro Microsystems Inc
文件页数: 6/17页
文件大小: 0K
描述: IC LED DVR BACKLIGHT MON 24TSSOP
标准包装: 8,000
拓扑: PWM,升压(升压)
输出数: 6
内部驱动器:
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)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 ~ 85°C
A8516
LED Backlight Driver for LCD Monitors and Televisions
ELECTRICAL CHARACTERISTICS (continued) Valid at V IN = 12 V; T A = 25°C, R FSET = 52 k Ω , R ISET = 12.4 k Ω , except
indicates specifications guaranteed over the full operating temperature range with T A = T J , unless otherwise noted
Characteristics
Symbol
Test Conditions
Min.
Typ. 1
Max.
Unit
LED Current Sinks (continued)
LEDx Accuracy 3
Err ILEDX
LED1 through LED6 = 1.0 V, at 100% Current
–3
±0.6
3
%
LEDx
Matching 4
Δ I LEDX
LED1 through LED6 = 1.0 V, I SET = 100 μ A
–3
±0.6
3
%
LEDx Switch Leakage Current 2
LEDx Bleeder Resistor to GND
I SL
R LEDX
V LEDx = 12 V, EN = 0
PWM = Low, V LEDx = 10 V
48
250
μ A
k Ω
Soft Start
Soft Start Sense Threshold Voltage
Soft Start LEDx Current Limit Relative to LED
100% Current
V SENS
I LED(SS)
Sense voltage for boost switch current
sensing
Current through enabled LEDx pins during
soft start
28.5
8
mV
%
Protection Features
Thermal Shutdown Threshold
Short Circuit Detect Voltage
Output Overvoltage Threshold
OVP Pin Leakage Current 2
Overvoltage Protection Sense Current 2
ˉFˉ ˉA ˉ ˉUˉˉLˉ ˉTˉ Pin Output Leakage 2
ˉFˉ ˉA ˉ ˉUˉˉLˉ ˉTˉ Pin Output Voltage
T TSD
V SC
V OVP
I OVPLK
I OVPH
I FLT
V OL
T J rising
Measured on any LEDx pin
R OVP = 0
V OVP = 22 V, EN = V IL , or PWM=V IL
V=5V
I = 500 μ A
18.0
183
165
25
19.5
0.1
200
21.0
217
1
0.4
°C
V
V
μ A
μ A
μ A
V
1 Typical specifications are at T A = 25oC.
2 For input and output current specifications, negative current is defined as coming out of the node or pin (sourcing), positive current is defined as going
into the node or pin (sinking).
3 LED accuracy is defined as (I SET × 640 – I LED (av)) / (I SET × 640), I LED (av) measured as the average of I LED1 through I LED6 . Refer to characterization
chart for variation over temperature range.
4 LED current matching is defined as (I
temperature range.
LEDx – I LED (av)) / I LED (av), with I LED (av) as defined in footnote 3. Refer to characterization chart for variation over
5 Guaranteed by design and characterization.
Variation of Total LED Current versus Ambient Temperature
100% Current = 64 mA per channel at 25°C
101.0
100.5
100.0
99.5
99.0
98.5
98.0
-60
-40
-20
0
20 40 60
80
100
Temperature, T A (°C)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
6
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