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PDF BD555BKFV Data sheet ( Hoja de datos )
| Número de pieza | BD555BKFV | |
| Descripción | AC/DC Controller IC | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
BD555BKFV AC/DC Controller IC
for mains dimmable LED lighting
BD555BKFV
●General Description
The BD555BKFV controller AC/DC controller IC can be
used in a wide range of dimmable LED lighting driver
applications. The main target application is dimmable
retro-fit LED lighting, replacing existing incandescent
light bulbs, halogen spot lights, CFL tubes etc.
●Features
Fixed frequency DC/DC controller (selectable)
Peak current or average current control (PCC/ACC)
Dynamic Load Current Controller (DLCC)
Logarithmic compensation of detected dimming level
Dimmer detector function
Anti-flash function when dimmer is OFF
PWM and analog dimming control supported
Over Current Protection (OCP)
Thermal Shutdown protection (TSD)
Under Voltage Lock Out (UVLO)
●Key Specifications
Input voltage range........................................16~39V
Regulated supply voltage.................................11.5V
Fixed DC/DC operating frequency.........40~400kHz
Detectable phase-cut range........................45°~135°
Typical current consumption.............................1mA
Under Voltage Lock Out detection.....................9.0V
Operating temperature range.................-40~+110°C
●Package
SSOP-B14
W(Typ.) x D(Typ.) x H(Max.)
5.00mm x 6.40mm x 1.15mm
●Applications
Retro-fit dimmable LED lighting (E27, E14, GU10, T8
etc.). Wide range of TRIAC and transistor dimmers
supported by DLCC function.
Custom LED lighting with PWM or voltage controlled
dimming.
●Typical Application Circuits
Figure 1. Typical application circuit for non-isolated dimmable buck topology
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed protection against radioactive rays
1/12
TSZ02201-0W1W0C300010-1-2
30.July.2013 Rev.003
1 page  
BD555BKFV
Datasheet
●Absolute Maximum Ratings
Parameter
Symbol
Maximum rating
Unit
Supply voltage (SUP terminal)
VSUP
40 V
Internal supply regulator voltage (VDDH terminal)
SW output current
BLDR output current
WLBD, ISNS terminal voltage
WBLD input current (strong load current)
VVDDH
ISW
IBLDR
VWBLD, VISNS
ISBLD
15.5
600*1
60*1
15.5
300*2
V
mA
mA
V
mA
DIM, DET, OSC, REF, FB terminal voltage
VDIM, VDET, VOSC, VREF, VFB
4.5
V
FB input current (VFB=4.5V)
ISYS, PGND terminal voltage
IFB
VISYS, VPGND
4.0
+/- 0.5
mA
V
Operating frequency
Maximum power dissipation
Operating ambient temperature range
Storage temperature range
foperating
Pd
Ta
Tstorage
400
0.87*4
-40 ～ +110
-55 ～ +150
kHz
W
°C
°C
Maximum junction temperature
Tjunction,max
+150
°C
*1 ISW pulse current duration <100ns@foperating
*2 IBLDR pulse current duration <1us@fmains
never exceed 0.8*Pd
*3 IWBLD pulse current duration <300us@fmains
*4 SSOP-B14 package thermal resistance RθJA=143°C/W, mounted on a two-layer PCB of 70x70x1.6mm3
Notice1: Due to in case of the applied voltage or operating ambient temperature range or etc. exceed the absolute maximum ratings, a damage maybe
occurs, and the damage mode (short or open or etc.) can not be supposed, please take a physical safety measure (such as add a fuse) while some special
modes in which the absolute maximum ratings may be exceeded are considered.
Notice2: The power dissipation in BD555BKFV is mainly decided by the switching frequency of the DCDC converter and the current which is applied to the
BLDR pin. Please make the power dissipation caused by those less than 80% of the maximum power dissipation of the package.
●Recommended Operating Range (Ta= -40 ~ +110°C)
Parameter
Symbol
Supply voltage
VSUP
Range
16 ~ 39
Unit
V
●Electrical Characteristics
Parameter
Internal Supply Regulator*1
Startup current
Supply current ON
Supply current ON 1
Supply current ON 2
VDDH internal regulator voltage
UVLO release voltage
UVLO trigger voltage
UVLO hysteresis
Switching regulator
Minimum frequency
Maximum frequency
SW maximum duty cycle
Limits
Symbol
Unit
Min. Typ. Max.
Comments
ISUP,start
ISUP,NS
ISUP,ON1
ISUP,ON2
VVDDH
VUVLO,rl
VUVLO,tr
VUVLO,hys
- 0.4 0.8
- 0.8 1.0
- 1.0 1.3
- 2 2.4
10.0 11.5 15.0
9.20 10.0 10.8
VUVLO,tr - VUVLO,hys
0.75 1.00 1.25
mA In UVLO condition
mA No switching.
mA No load on SW/BLDR, fSW =40kHz.
mA No load on SW/BLDR, fSW =400kHz.
V VDDH load current IVDDH < 10mA
V VDDH rising
V VDDH falling
V
fSW_min 32 40 48 kHz fSW = 9.0×106/R11 (kHz)±20%,
fSW_max 320 400 480 kHz for frequency range 40KHz to 400KHz.
δmax
70 75 80 %
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/12
TSZ02201-0W1W0C300010-1-2
30.July.2013 Rev.003
5 Page 
BD555BKFV
●Physical Dimension, Tape and Reel Information
Package Name
SSOP-B14
Datasheet
<Tape and Reel information>
Tape
Quantity
Embossed carrier tape
2500pcs
Direction
of feed
E2
( )The direction is the 1pin of product is at the upper left when you hold
reel on the left hand and you pull out the tape on the right hand
Reel
1pin Direction of feed
∗Order quantity needs to be multiple of the minimum quantity.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/12
TSZ02201-0W1W0C300010-1-2
30.July.2013 Rev.003
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet BD555BKFV.PDF ] | |
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