BD9109FVM-TR Rohm Semiconductor, BD9109FVM-TR Datasheet - Page 13

• Manufacturer Part Number: BD9109FVM-TR
• Description: IC REG SW 0.8A 3.3VOUTPUT 8-MSOP
• Manufacturer: Rohm Semiconductor
• Type: Step-Down (Buck)r
• Series: -r

Specifications of BD9109FVM-TR

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 3.3V
• Current - Output: 800mA
• Frequency - Switching: 1MHz
• Voltage - Input: 4.5 ~ 5.5 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Power - Output: 587.4mW
• Output Voltage: 3.3 V
• Output Current: 0.8 A
• Input Voltage: 4.5 V to 5.5 V
• Switching Frequency: 1 MHz
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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V
SW
OUT
1.2
1.1
0.9
0.8
1
2.7
Fig.73 SW waveform Io=200mA
【PWM control
Ta=25℃
Fig.70 Vcc-Fosc
INPUT VOLTAGE:V
3.6
CC
V
[V]
OUT
VCC=3.3V
Ta=25℃
=1.5V】
4.5
V
CC
=PV
V
V
I
=EN
OUT
OUT
OUT
CC
Fig. 74 Transient response
Fig.71 Soft start waveform
Io=100→600mA(10μs)
13/28
【V
【V
VCC=3.3V
VCC=3.3V
OUT
OUT
Ta=25℃
Ta=25℃
=1.5V】
=1.5V】
Io=0A
V
V
I
SW
OUT
OUT
OUT
Fig.72 SW waveform Io=10mA
VCC=3.3V
Ta=25℃
【SLLM control
Fig.75 Transient response
Io=600→100mA(10µs)
Technical Note
2009.05 - Rev.A
【V
VOUT=1.5V】
OUT
VCC=3.3V
Ta=25℃
=1.5V】