BD9109FVM-TR Rohm Semiconductor, BD9109FVM-TR Datasheet - Page 15

• 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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【BD9110NV】
【BD9120HFN】
GND 4
Fig.82 BD9120HFN TOP View
ADJ 1
V
ITH 3
Fig.80 BD9110NV TOP View
CC
2
1
2
3
4
GND
EN
ADJ
ITH
TOP View
TOP View
PGND
PV
V
SW
CC
CC
8
7
6
5
8 EN
7 PV
6 SW
5 PGND
CC
1
EN
Gm Amp.
R1
ADJ
15/28
1
VREF
EN
Gm Amp.
+
3
Start
ADJ
R1
Soft
VREF
R2
+
8
Start
Soft
R2
2
R
Fig.83 BD9120HFN Block Diagram
Fig.81 BD9110NV Block Diagram
ITH
3
R
ITH
SLOPE
ITH
ITH
SLOPE
V
C
UVLO
CC
TSD
SCP
V
V
Current
Comp
ITH
UVLO
CC
C
CC
TSD
+
ITH
OSC
V
Current
Comp
+
CC
OSC
CLK
S
CLK
R
R
S
Q
Q
Current
Sense/
Protect
Driver
Current
Logic
Sense/
Protect
Driver
Logic
+
+
Technical Note
2009.05 - Rev.A
2
7
5
4
8
6
7
6
5
4
PV
SW
SW
PGND
PV
V
GND
GND
V
PGND
4.7µH
CC
CC
CC
2.2µH
22µF
CC
10µF
5V
Input
10µF
10µF
3.3V
Input
Output
Output