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BD9B300MUV Datasheet, PDF (16/33 Pages) Rohm – Over Current Protection | |||
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BD9B300MUV
Datasheet
Application Example(s)
1. Basic Operation
(1) DC/DC Converter operation
BD9B300MUV is a synchronous rectifying step-down switching regulator that achieves faster transient response by
employing constant on-time control system. It utilizes switching operation in PWM (Pulse Width Modulation) mode
for heavier load, while it utilizes Deep-SLLM (Simple Light Load Mode) control for lighter load to improve efficiency.
â Deep-SLLMTM Control
â¡ PWM Control
Output Current IOUT [A]
Figure 40. Efficiency (Deep-SLLMTM Control and PWM Control)
â Deep-SLLMTM Control
VOUT
20mV/div
â¡PWM Control
VOUT
20mV/div
SW
2.0V/div
SW
2.0V/div
Figure 41. Switching Waveform at Deep-SLLMTM Control
(VIN=5.0V, VOUT=1.2V, IOUT=100mA)
Figure 42. Switching Waveform at PWM Control
(VIN=5.0V, VOUT=1.2V, IOUT=3A)
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© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 ⢠15 ⢠001
16/30
TSZ02201-0J2J0AJ00410-1-2
23.May.2014 Rev.001
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