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PDF BD9227F Data sheet ( Hoja de datos )
| Número de pieza | BD9227F | |
| Descripción | PWM Buck Converter Integrated FET | |
| Fabricantes | ROHM Semiconductor | |
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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: -40℃ to +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 structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed for protection against radioactive rays
1/25
TSZ02201-0252AAJ00010-1-2
8.Jun.2016 Rev.001
1 page  
BD9227F
Recommended Operating Conditions
Parameter
Symbol
Min
Typ Max Unit
Input Voltage
Output Voltage
VCC
6
VOUT(Note1) VCC x 0.252
-
-
20
VCC
V
V
Output Current
IOUT
-
-
1A
NON Input Voltage
VNON
-
-
1V
PWM Input Voltage
VPWM
-
- 5.5 V
PWM Input Frequency
FPWM
1
- 50 kHz
Input Capacitor
CVCC(Note2)
4.7
10
- μF
Inner Regulator Capacitor
CVB(Note3)
0.047
0.1
0.22 μF
Inductor
L(Note4)
4.7
10
- μH
Output Capacitor
COUT(Note5)
4.7
10
- μF
Ref Voltage Capacitor
CNON(Note6)
-
1
- μF
Please select each capacitor considering the effect of DC bias and temperature coefficient to satisfy the specification.
(Note1) Refer to P.18(10)
(Note2) Refer to P.15 (6)
(Note3) Refer to P.15 (4)
(Note4) Refer to P.14 (1)
(Note5) Refer to P.15 (2)
(Note6) Refer to P.16 (7)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/25
TSZ02201-0252AAJ00010-1-2
8.Jun.2016 Rev.001
5 Page 
BD9227F
Reference Characteristics of Typical Application Circuits (VOUT=12V)
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
CNON:
1uF
PWM
C2:
1.5nF
R3:
33k
C3:
Open
Figure 15. Typical Application Circuit (VOUT=12V)
Parts
L1 ：
CVCC/COUT ：
CVB ：
D1 ：
Coilcraft
Murata
Murata
Rohm
LPS5030-103ML
GRM31CR71E106MA12#
GRM155R71E104ME14#
RB060MM-30
10μH
10μF/25V
0.1μF/25V
100
90
80
70
60
50
40
30
20
10
0
1
VCC=16V
VCC=20V
10 100
Output Current:IOUT[mA]
Figure 16. Efficiency-Output Current (VOUT=12V)
1000
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/25
TSZ02201-0252AAJ00010-1-2
8.Jun.2016 Rev.001
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet BD9227F.PDF ] | |
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