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Rohm Semiconductor Electronic Components Datasheet

BM521Q25F Datasheet

AC/DC controller

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Datasheet
AC/DC Drivers
AC/DC controller IC for LED lighting
Included 650V MOSFET
BM521Q25F
General Description
BM521Q25F is an AC/DC converter for LED lighting,
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 is 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.
Owing to the built-in start-up circuit and MOSFET with
650V withstand voltage, a compact application can be
designed easily, and the low-cost can be achieved with
the small BOM size.
Features
Quasi-resonant Switching Mode + PFC Circuit
Non-isolated Application
Built-in 650V Start-up Circuit
Built-in 650V Switching MOSFET
Maximum Frequency 300kHz
VCC Pin: Under Voltage Protection
VCC Pin: Over Voltage Protection (Latch)
SOURCE Pin: Leading-Edge-Blanking Function
SOURCE Pin: OPEN Protection Function
LED Over Current Detection Function
Package
SOP8
W(Typ) x D(Typ) x H(Max)
5.00mm x 6.20mm x 1.71mm
Key Specifications
Operating Power Supply Voltage Range:
VCC: 8.9V to 25.0V
DRAIN: to 650V
Operating Current: Normal Operation: 400μA (Typ)
Operating Temperature Range: - 40°C to +105°C
MOSFET ON Resistance:
4.0Ω (Typ)
Application
LED Bulb, Down-light etc.
Electrical Machineries for LED Lighting
Typical Application Circuit
F1
DA1
Vin
R1
CB
L1
R3
CIN C1
U1
R4 R2
RS
C3
C2
L2
D1
D2
DZ
LED+
+
RO CO
Figure 1. Application Circuit
LED-
Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/16
TSZ02201-0F4F0C300090-1-2
20.Apr.2016 Rev.002


Rohm Semiconductor Electronic Components Datasheet

BM521Q25F Datasheet

AC/DC controller

No Preview Available !

BM521Q25F
Absolute Maximum Ratings (Ta=25°C)
Item
Input Voltage Range 1
Symbol
Vmax1
Rating
-0.3 to 30
Unit
V VCC
Condition
Input Voltage Range 2
Vmax2
-0.3 to 6.5
V SOURCE, COMP, LPF, ZT
Input Voltage Range 3
Vmax3
650
V DRAIN
Drain Current Pulse
Operating Temperature Range
IDP
Topr
2.60
-40 to +105
A PW=10μs, Duty Cycle=1%
oC
Maximum Junction Temperature Tjmax 150 oC
Storage Temperature Range
Tstg
-55 to +150
oC
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the
absolute maximum ratings.
Thermal Resistance(Note 1)
Parameter
Symbol
Thermal Resistance (Typ)
1s(Note 3)
2s2p(Note 4)
Unit
SOP8
Junction to Ambient
θJA 197.4
109.8
°C/W
Junction to Top Characterization Parameter(Note 2)
ΨJT 21
19 °C/W
(Note 1)Based on JESD51-2A(Still-Air)
(Note 2)The thermal characterization parameter to report the difference between junction temperature and the temperature at the top center of the outside
surface of the component package.
(Note 3)Using a PCB board based on JESD51-3.
(Note 4)Using a PCB board based on JESD51-7.
Layer Number of
Measurement Board
Single
Material
FR-4
Board Size
114.3mm x 76.2mm x 1.57mmt
Top
Copper Pattern
Footprints and Traces
Thickness
70μm
Layer Number of
Measurement Board
4 Layers
Top
Copper Pattern
Footprints and Traces
Material
FR-4
Thickness
70μm
Board Size
114.3mm x 76.2mm x 1.6mmt
2 Internal Layers
Copper Pattern
Thickness
74.2mm x 74.2mm
35μm
Bottom
Copper Pattern
74.2mm x 74.2mm
Thickness
70μm
Recommended Operating Conditions (Ta=25°C)
Item
Input Voltage Range 1
Input Voltage Range 2
Symbol
VCC
VDRAIN
Range
8.9 to 25.0
to 650
Unit Condition
V VCC Voltage
V DRAIN Voltage
Electrical Characteristics MOSFET (Unless otherwise specified VCC=15V Ta=25°C)
Item
Symbol
Specification
Min Typ Max
Unit
Condition
Drain-Source
Breakdown Voltage
V(BR)DDS
650
-
- V ID=1mA / VGS=0V
Drain Leakage Current
IDDS
-
- 100 μA VDS=650V / VGS=0V
ON Resistance
RDS(ON)
-
4.0 5.5 Ω ID=0.25A / VGS=10V
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/16
TSZ02201-0F4F0C300090-1-2
20.Apr.2016 Rev.002


Part Number BM521Q25F
Description AC/DC controller
Maker ROHM
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