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SP5001 SI-POWER Efficient ZVS CCFL monitor circuit Datasheet

SP500108-1 Speakers & Transducers Dynamic Speaker


SI-POWER
SP5001
Part Number SP5001
Manufacturer SI-POWER
Description SP5000/SP5001/SP5002 高效 ZVS CCFL 监控电路 概述: SP5000/SP5001/SP5002 是专为冷阴极荧光灯 CCFL 而开发的高效的电源监控电路。封 装形式为 SSOP-20。 SP5000/SP5001/SP5002 采用全桥 ZVS 的构造,提供了对称的交流输出和高于 85%的 效率,使其尤其适合于液晶的背光控制应用之中。该电路可通过检测灯管电流,直接控制 PWM 亮度调整电路的工作。在无电流通过灯管时,SP5000/SP5001/SP5002 提供了一个连 续的交流输出,以确保成功地点亮灯管。PWM 亮度调整电路则在灯管点亮之后立即启动。 SP50...
Features 制输出(输出逻辑高电平)。 开关功能: 一个内置的 80K 欧姆下拉电阻连接到 EA 端,提供了不需关闭电源而“开/关”芯片输 出的功能;当芯片关闭时,所有的输出被强制为逻辑高电平。 设置 ZVS 工作的 Delay / Overlap 时间: 内置延迟发生电路的周期,取决于电阻 RRTDLY 值,控制 CCFL 工作需要的定时电路: 如点亮周期、灯工作频率、控制亮度 PWM 频率、以及 ZVS 开关的 TDelay 和 TOverlap 时间。 电阻 RRTDLY 连接到 RTDLY 端,由内部 1.25V 基准电压决定了基准电流: IREF=1.25V/RRTDLY ------------(1) 无锡硅动力微电子有限公司 -2- SP5000/SP5001/SP5002 高效 ZVS CCFL 监控电路 IREF 决定 TDelay 和 TOverlap 值,在典型的运行状态(5V、25℃)时,它们的关系如下图: 设置灯管工作频率: 灯管的工作频率可由公式(2)计算: FLAMP=1.65/( RRTDLY*CCTOSC)---------(2) 如对于需要工作在 57KHz 的 CCFL,若延时电阻 RRTDLY 为 82KΩ,就应该接一个 350pF 电容到端子 CTOSC。 软启动和开灯保护: 一个大小为 0.05*IREF 的镜像电流源,向 SST 端子充电;...

Document Datasheet SP5001 datasheet pdf (592.60KB)
Distributor Distributor
Mouser Electronics
Stock 733 In Stock
Price
1 units: 4.54 USD
10 units: 3.75 USD
25 units: 3.46 USD
50 units: 3.25 USD
100 units: 3.04 USD
250 units: 3.03 USD
500 units: 2.69 USD
1000 units: 2.6 USD
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SP5001 Distributor

part
Mean Well
RSP-500-15
POWER SUPPLY, AC-DC, 15V, 33.4A
108 units: 117485 KRW
54 units: 121761 KRW
27 units: 126038 KRW
9 units: 130287 KRW
1 units: 138826 KRW
Distributor
element14 Asia-Pacific

2 In Stock
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part
DB Unlimited
SP500104-1
4 Ohms 범용 스피커 5W 135Hz ~ 20kHz 상단 원형, 정사각 프레임
500 units: 5454.652 KRW
250 units: 5790.344 KRW
100 units: 6159.97 KRW
50 units: 6573.66 KRW
25 units: 7003.52 KRW
10 units: 7597.5 KRW
1 units: 9203 KRW
Distributor
DigiKey

17 In Stock
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part
DB Unlimited
SP500108-1
Speakers & Transducers Dynamic Speaker
1 units: 4.54 USD
10 units: 3.75 USD
25 units: 3.46 USD
50 units: 3.25 USD
100 units: 3.04 USD
250 units: 3.03 USD
500 units: 2.69 USD
1000 units: 2.6 USD
Distributor
Mouser Electronics

733 In Stock
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part
DB Unlimited
SP500108-1
Speakers 190Hz 86dBA 8Ohm Round Wire Lead
100 units: 3.73 USD
10 units: 4.56 USD
1 units: 5.86 USD
Distributor
Arrow Electronics

114 In Stock
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part
Mean Well
RSP-500-15
Power Supply, AC-DC, Enclosed, 500W, [email protected], 88-264V In | MEAN WELL RSP-500-15
1 units: 108.87 USD
5 units: 103.42 USD
10 units: 100.16 USD
25 units: 96.89 USD
Distributor
RS

1 In Stock
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part
Mean Well
RSP-500-12
AC/DC Power Supply Single-OUT 12V 41.7A 500.4W 13-Pin
1 units: 96.7 USD
Distributor
Chip1Stop

8 In Stock
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part
Mean Well
SP-500-12
AC/DC Power Supply - 1 Output - 12V@40A - 480W
0 units: 0 USD
Distributor
Onlinecomponents.com

0 In Stock
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part
DB Unlimited
SP500108-1
Speakers 190Hz 86dBA 8Ohm Round Wire Lead
100 units: 3.73 USD
10 units: 4.56 USD
5 units: 5.86 USD
Distributor
Verical

114 In Stock
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part
Harris Semiconductor
HSP50016JI-52
Digital Down Converter, Synthesizer-Quadrature Mixer-lowpass filter '
1000 units: 50.92 USD
500 units: 53.92 USD
100 units: 56.31 USD
25 units: 58.71 USD
1 units: 59.91 USD
Distributor
Rochester Electronics

52 In Stock
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part
Littelfuse Inc
SP5001-04TTG
ESD Protection Diodes / TVS Diodes 4CH CMF W/TVS ARRAY
No price available
Distributor
TTI Asia

0 In Stock
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