PWM Buck Converter
Datasheet
6V to 20V, 1A 1ch PWM Buck Converter Integrated FET
BD9227F
General Description The BD9227F is a 20V, 1A no...
Description
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 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...
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