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BD9227F PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD9227F
기능 PWM Buck Converter Integrated FET
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BD9227F 데이터시트, 핀배열, 회로
Datasheet
6V to 20V, 1A 1ch
PWM Buck Converter Integrated FET
BD9227F
General Description
The BD9227F is a 20V, 1A non-synchronous PWM duty
control buck converter with integrated internal high-side
20V Power MOSFET. Operating frequency is 1.0MHz
fixed by inner circuit. Current mode control with internal
slope compensation simplifies the external compensation
calculation and reduces component count while allowing
the use of ceramic output capacitors. Additional
protection features are included such as Over Current
Protection, Thermal Shutdown and Under Voltage
Lockout. The under voltage lockout and hysteresis can
be set by external resistor. The BD9227F is available in
SOP8.
Key Specifications
Input Voltage Range:
6V to 20 V
Ref. Precision: PWM=H: ±2.0 %(±1.0 %@Ta=25°C)
Max Output Current:
1A (Max.)
Switching Frequency:
1.0MHz (Typ.)
Operating Temperature Range: -40to +85°C
Packages
SOP8
W(Typ) x D(Typ) x H(Max)
5.00mm x 6.20mm x 1.71mm
Features
Wide Operating Input Range 6V to 20V
20V/200mΩ Internal Power MOSFET
1.0MHz Fixed Operating Frequency
Current Mode
Over Current Hiccup Period Protection
Under Voltage Locked Out(UVLO), Over Voltage
Protection(OVP), Thermal Shut Down(TSD)
Available in SOP8 Package.
SOP8
Applications
Home Appliance
VM Motor
Typical Application Circuits
VCC
VOUT
COUT:
10uF
CVB:
0.1uF
CVCC:
10uF
L1:10uH
D1
R1:
110k
R2:
10k
VB NON
VCC
PWM
LX FB
GND
COMP
BD9227F
Figure 1. Typical Application Circuit
CNON:
1uF
PWM
C2:
1.5nF
R3:
33k
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed for protection against radioactive rays
1/25
TSZ02201-0252AAJ00010-1-2
8.Jun.2016 Rev.001




BD9227F pdf, 반도체, 판매, 대치품
BD9227F
Absolute Maximum Ratings (Ta=25°C)
Parameter
Symbol
Rating
Unit
VCC to GND
VB to GND
LX to GND
VCC to LX
VCC to VB
COMP to GND
NON to GND
FB to GND
PWM to GND
High-Side FET Drain Current
Power Dissipation
VCC
VB
VLX
VLX
VB
VCOMP
VNON
VFB
VPWM
IDH
Pd
-0.3 to +22
-0.3 to +22
-2.0 to +22
-0.3 to +22
-0.3 to +7
-0.3 to +7
-0.3 to +7
-0.3 to +7
-0.3 to +7
OCP
0.633(Note 1)
V
V
V
V
V
V
V
V
V
A
W
Operating Temperature
Topr
-40 to +85
°C
Storage Temperature
Tstg -55 to +150 °C
Junction Temperature
Tjmax
150
°C
(Note 1) During mounting of 114.3×76.2×1.57t mm 1layer board.Reduce by 5.07mW for every 1increase. (Above 25)
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
Junction to Top Characterization Parameter(Note 2)
θJA 197.4
ΨJT 21
109.8
19
°C/W
°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.
(Note3) Using a PCB board based on JESD51-3
Layer Number of
Measurement Board
Material
Board Size
Single
FR-4
114.3mm x 76.2mm x 1.57mmt
Top
Copper Pattern
Thickness
Footprints and Traces
70μm
(Note 4) Using a PCB board based on JESD51-7
Layer Number of
Measurement Board
Material
4 Layers
FR-4
Board Size
114.3mm x 76.2mm x 1.6mmt
Thermal Via(Note 5)
Pitch
Diameter
1.20mm
Φ0.30mm
Top 2 Internal Layers
Copper Pattern
Thickness
Copper Pattern
Footprints and Traces
70μm
74.2mm x 74.2mm
(Note 5) This thermal via connects with the copper pattern of all layers
Thickness
35μm
Bottom
Copper Pattern
74.2mm x 74.2mm
Thickness
70μm
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© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/25
TSZ02201-0252AAJ00010-1-2
8.Jun.2016 Rev.001

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BD9227F 전자부품, 판매, 대치품
BD9227F
Timing Chart
VCC
VCC UVLO reset
PWM
PWMON_IH(inner)
REG(inner)
REG UVLO reset
REG UVLO_IL(inner)
VCC
VB
VCC-5V
VBUVLO_IL(inner)
PWM_CNT_IH(inner)
NON
COMP
LX
VB UVLO reset
Tss
VOUT(FB)
OVPOUT_IH(inner)
REG UVLO
VB UVLO
Shutdown delay
2.047 msec
OVP
OVP reset
VOUT (FB)
NON
VOUT short to GND
reset
Figure 4. Startup/Shutdown Timing Chart
restart
Short condition is reset
restart
COMP
LX
IL OCP th
OCPOUT_IH(inner)
OCP_latch(inner)
OCP detect
OCP latch is set
Hiccup time:8.191 msec(typ)
Figure 5. OCP Timing Chart
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© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
7/25
TSZ02201-0252AAJ00010-1-2
8.Jun.2016 Rev.001

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BD9227F

PWM Buck Converter Integrated FET

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