BD9A301MUV-LB Datasheet, PDF (17/35 Pages) Rohm – This is the product guarantees long time support in Industrial market

BD9A301MUV-LB
Datasheet
1. Function Explanations
(1) DC/DC converter operation
BD9A301MUV-LB is a synchronous rectifying step-down switching regulator that achieves faster transient response
by employing current mode PWM control system. It utilizes switching operation in PWM (Pulse Width Modulation)
mode for heavier load, while it utilizes SLLM (Simple Light Load Mode) control for lighter load to improve efficiency.
① SLLM^TM control
② PWM control
Output current IOUT [A]
Figure 41. Efficiency (SLLM^TM control and PWM control)
①SLLM^TM control
②PWM control
VOUT =50mV/div
SW=2V/div
Time=5µs/div
VOUT =50mV/div
SW=2V/div
Time=5µs/div
Figure 42. SW Waveform (SLLM^TM control)
(V_IN = 5.0V, VOUT = 1.8V, IOUT = 50mA)
Figure 43. SW Waveform (PWM control)
(V_IN = 5.0V, VOUT = 1.8V, IOUT = 1A)
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20.Aug.2014 Rev.001