Datasheet > BD555A1AFV-E2

BD555A1AFV-E2

更新时间： 2024-11-03 12:50:43

品牌	Logo	应用领域
罗姆 - ROHM		驱动器转换器
页数	文件大小	规格书
18页	667K
描述
Electrolytic Capacitor Free Buck Converter LED Driver

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中文翻译

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BD555A1AFV-E2 数据手册

BD555A1AFV

Datasheet

LED Driver for Lighting Series

Electrolytic Capacitor Free

Buck Converter LED Driver

BD555A1AFV

●General Description

●Features

BD555A1AFV is a LED driver best for LED lighting

applications. It supports dimming. Constant current

switching controller for AC/DC buck converter is

accumulated inside. By choosing external MOS

Transistor, small～large power of LED can be driven.

The driver is adoptable to a wide range of lighting from

small light such as spotlights to large one like base

lights.

With digital power control, the average value of LED

current is stably adjustable to requesting current. By

only primary sense resistor, LED current is available to

feedback LED current is useful without feedback

circuits, reduce parts. Input characteristics and output

characteristics is good by precisely digital power

control.

■

Highly efficient Buck AC/DC converter

Primary control without feedback circuit

High accuracy LED current output by LED average

control

Capacitor controller for Electrolytic free design

Fixed switching frequency

Built-in regulator for inner power supply

Built-in LED open detection (shutdown type)

Built-in UVLO detection

■

Built-in thermal shut-down function

●Packages

SSOP-B14

5.00mm×6.40mm×1.15mm

It’s support electrolytic free design by capacitor

controller which is detect AC voltage and control

ceramic capacitor.

●Applications

●Key Specifications

■

Spot light without dimming

Desk ramp without dimming

Down light without dimming

Base light without dimming

■

AC Input range

80 to 275V_AC

10 to 38V

-40 to 100℃

±1.5 %( Typ.)

Input Voltage range(AUX pin)

Operating temperature

Accuracy of output current

●Typical Application Circuits

VBUCK

R_AUX2:1kΩ

R_AUX1:200kΩ

C_out

0.1µF

C_AC: 10µF

TR3

D_AUX1:15V

D_AUX2

D_FLY

VLED

L_A: 0.2mH

L_P: 2mH

D_BUCK

C_VDD2

2.2µF

C_AUX

0.47µF

VDD2

AUX

VDD2

VDET

DVDD

VDD1

VOUT

C_VDD1

2.2µF

DVDD2

TR1

CSEL

ISENSE

TESTO

GNDA

R_ISET: 1.5Ω

SOFT

GND

OSC

R_SOFT

R_OSC

100kΩ

Fig.1 Typical Application Circuit

○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

.www.rohm.com

TSZ02201-0F2F0C300010-1-2

03.AUG.2012 Rev.001

1/15

TSZ22111・14・001

12 3 4 5 6 7...18

中文翻译

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