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AP8801
500mA LED STEP-DOWN CONVERTER
Description
Pin Assignments
The AP8801 is a step-down DC/DC converter designed to drive LEDs with
a constant current. The device can drive up to thirteen LEDs, depending on
?
(Top View)
the forward voltage of the LEDs, in series from a voltage source of 8V to
48V. Series connection of the LEDs provides identical LED currents
SET 1
8
CTRL
resulting in uniform brightness and eliminating the need for ballast
resistors. The AP8801 switches at frequency up to 700kHz. This allows
the use of small size external components, hence minimizing the PCB area
needed.
GND 2
NC 3
V IN 4
AP8801
7
6
5
GND
SW
SW
Maximum output current of AP8801 is set via an external resistor
connected between the V IN and SET input pins. Dimming is achieved by
applying either a DC voltage or a PWM signal at the CTRL input pin. An
input voltage of 0.2V or lower at CTRL shuts down the output at SW and
SO-8
(Top View)
puts the device into a low-current standby state.
SET 1
8
CTRL
Features
? LED driving current up to 500mA
GND 2
NC 3
AP8801
7
6
GND
SW
?
?
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Operating input voltage up to 48V
High efficiency up to 92%
High switching frequency up to 700kHz
V IN 4
MSOP-8
5
SW
?
PWM/DC input for dimming control
?
?
Built-in output open-circuit protection
SO-8 and MSOP-8 are in “Green” Molding Compound (No Br, Sb)
Applications
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
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Commercial & industrial lighting
Small LCD panel backlight
Appliances interior lighting
Architecture Detail lighting
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.
Typical Application Circuit
AP8801
Document number: DS31765 Rev. 7 - 2
1 of 14
www.diodes.com
June 2012
? Diodes Incorporated
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相关代理商/技术参数
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AP8802_0912 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:1A LED Step-down Converter
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AP8802EV2 功能描述:AP8802 1, Non-Isolated Output LED Driver Evaluation Board 制造商:diodes incorporated 系列:- 零件状态:有效 电流 - 输出/通道:1A 输出和类型:1，非隔离 电压 - 输出:- 特性:可调光 电压 - 输入:8 V ~ 45 V 所含物品:板 使用的 IC/零件:AP8802 标准包装:1
AP8802EV3 功能描述:AP8802 1, Non-Isolated Output LED Driver Evaluation Board 制造商:diodes incorporated 系列:- 零件状态:有效 电流 - 输出/通道:1A 输出和类型:1，非隔离 电压 - 输出:- 特性:可调光 电压 - 输入:8 V ~ 45 V 所含物品:板 使用的 IC/零件:AP8802 标准包装:1
AP8802FNG-7 功能描述:LED照明驱动器 28V, 350mA LED DC/DC Converter RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
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