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PDF BM520Q25F Data sheet ( Hoja de datos )
| Número de pieza | BM520Q25F | |
| Descripción | AC/DC Controller IC | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
AC/DC Drivers
AC/DC Controller IC for LED Lighting
Included 650V MOSFET
BM520Q25F
●Description
BM520Q25F is an AC/DC converter which has a
built-in MOSFET with 650V withstand voltage. This
IC can be applied to quasi-resonant typed High-side
LED driver application, and the high current precision
and Low EMI noise can be achieved. Moreover, owing
to the built-in PFC (Power Factor Correction)
converter, the harmonics can be improved.
Owing to the start-up circuit with 650V withstand
voltage, the low power consumption is achieved. And
owing to the external current setting resistance, a
power supply design with a high degree of freedom
can be achieved.
With the built-in MOSFET with 650V withstand
voltage, a low-cost application can be achieved, and it
makes the application design easily.
●Key Specifications
Operating power supply voltage range:
VCC 8.9V to 26.0V DRAIN: ～650V
Operating current: Normal operation: 0.45mA (typ.)
Operating temperature range: - 40deg. to +105deg.
MOSFET ON resistance: 4.0Ω (typ.)
●Features
Quasi-resonant switching mode + PFC circuit
Built-in 650V starter circuit
Built-in 650V switching MOSFET
Maximum frequency 200kHz
VCC pin: under voltage protection
VCC pin: over voltage protection (latch)
SOURCE pin: Leading-Edge-Blanking function
LED over current detection function
ZT pin: trigger mask function
ZT pin: over voltage protection (latch)
FET over current protection function
LED current AC compensation function
●Package
SOP8
5.00mm × 4.40mm pitch 1.27mm
(typ.) (typ.)
(typ.)
●Application Circuit
●Application
LED bulb, seal-typed LED lighting
Electrical machineries for LED lighting
L1
F1
L FUSE
DA1
FLT
R1
N
CB C1 +
U1
CVCC
RZTH
RS
CCOMP RZTL
D1
T1
LED+
RO CO
LED-
Figure 1. Application circuit
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays.
1/15
TSZ02201-0F1F0C300030-1-2
15.Apl.2014 Rev.001
1 page  
BM520Q25F
●Block Diagram
F1
Fu se
Vin
R1
CIN
D3
C1
VCC (1)
VCCUVLO
Po w e r
Supply
VREF4V
S T ART COMP
0.7V
VCCRECHG
13V/
8.7V
VCCUVLO
R2
R3 ZT (8)
C2
13.5V/
8.2V
27.5V/
23.5V
3.5V
VCCOVP
100us
Mask
ZT OVP
100us
Mask
ZT COMP
NOUT
100mV/
200mV
Max
Freq.
Istart1=0. 55mA
Istart2=3mA
Istart3=10uA
DR AIN(4)
HV Starter
LOGIC
12V
Clamper
NOUT
SQ
R
DRIVER
TSD
Max
ON time
200ns
L.E.B.
OCP
AC
Compenstaion
0.6V
EAMP
VREF4V
1MΩ
SOU R CE (5)
GND (7)
OSC
0.6V
COM P
(6)
C3
RS
D2
Figure 3. Block diagram
Datasheet
T1
LED+
COUT
LED-
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/15
SZ02201-0F1F0C300030-1-2
15.Apl.2014 Rev.001
5 Page 
BM520Q25F
●Thermal loss
According to the thermal design, please observe the conditions below when use this IC.
1. The ambient temperature Ta must be 105℃ or less.
2. The consumption of the IC must be within the allowable dissipation Pd.
The thermal dissipation characteristics are as follows.
(PCB: 70 mm × 70mm × 1.6 mm, mounted on glass epoxy substrate)
1000
900
800
700
600
500
400
300
200
100
0
0
25 50 75 100 125 150
Ta[℃]
Figure 14. Thermal dissipation characteristics
Datasheet
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/15
SZ02201-0F1F0C300030-1-2
15.Apl.2014 Rev.001
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet BM520Q25F.PDF ] | |
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