Datasheet > AP8801EV1

AP8801EV1

更新时间： 2024-02-05 12:22:09

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
8页	214K
描述
The evaluation board does not have reverse polarity protection

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AP8801EV1 数据手册

AP8801EV1 USER GUIDE

DESCRIPTION

The AP8801EV1, Figure 1, is a PCB constructed using an FR4 base for evaluating the AP8801 LED

driver with internal switch in SOP-8L package. The evaluation board can be used to drive an external

choice of LEDs; the total forward voltage across the LEDs depending on the number and type

connected. [1]

The suggested operating voltage for the evaluation board ranges from 8V to 45V maximum.

Higher voltage means lower supply current.

The nominal current for the evaluation board is set at 460mA with a 0R43 sense resistor, R1.

Test point CTRL provides a connection point for DC or PWM dimming and shutdown.

Note: The evaluation board does not have reverse polarity protection

Warning: with 500mA output, the connected LED will be hot and very bright

Figure 1: AP8801EV1 Evaluation Board

AP8801 DEVICE DESCRIPTION

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 largely on 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

resulting in uniform brightness and eliminates the need for ballast resistors. The AP8801 switches at

frequencies up to 500kHz. This allows the use of small size external components, hence minimizing

the PCB area needed.

Maximum output current of AP8801 is set via an external resistor connected between the V_INand 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 puts the device into

a low-current standby state.

The device includes the output switch and a current sense circuit, which requires an external sense

resistor to set the nominal current up to 500mA.

Issue 5 – August 2009

www.diodes.com

12 3 4 5 6 7 8

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型号	品牌	获取价格	描述	数据表
AP8801EV2	DIODES	获取价格	The evaluation board does not have reverse polarity protection
AP8801M8G	DIODES	获取价格	The evaluation board does not have reverse polarity protection
AP8801M8G-13	DIODES	获取价格	500mA LED Step-Down Converter
AP8801SG	DIODES	获取价格	The evaluation board does not have reverse polarity protection
AP8801SG-13	DIODES	获取价格	500mA LED Step-Down Converter
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AP8802_0912	DIODES	获取价格	1A LED Step-down Converter
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AP8802H	DIODES	获取价格	60V 1A LED Step-down Converter