BD9141MUV Datasheet, PDF (5/19 Pages) Rohm – Output 2A or More High-efficiency Step-down Switching Regulator with Built-in Power MOSFET

BD9141MUV
Technical Note
530
VCC=PVCC
=EN
520
510
Ta=25℃
500
490
VOUT
480
470
5 6 7 8 9 10 11 12 13
INPUT VOLTAGE:VCC[V]
Fig.12 VCC-FOSC
【VOUT=5V】
VCC=8V
Ta=25℃
Io=0A
Fig.13 Soft start waveform
SW 【SLLM control
VOUT=5V】
VOUT
VCC=8V
Ta=25℃
Io=0A
Fig.14 SW waveform Io=10mA
【PWM control
SW
VOUT=5V】
VOUT
【VOUT=5V】
VOUT
VOUT
IOUT
VCC=8V
Ta=25℃
Fig.15 SW waveform Io=2000mA
IOUT
VCC=8V
Ta=25℃
Fig. 16Transient response
Io=0.5A→1A(10μs)
VCC=8V
Ta=25℃
Fig.17 Transient response
Io=1A→0.5A(10μs)
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5/18
2009.06 - Rev.A