Document
Datasheet
Synchronous Buck Converter with Integrated FET
BD9106FVM BD9107FVM BD9109FVM BD9110NV BD9120HFN
General Description The BD9106FVM, BD9107FVM, BD9109FVM, BD9110NV, and BD9120HFN are ROHM’s high efficiency step-down switching regulators designed to produce a voltage as low as 1V from a supply voltage of 3.3V or 5.0V. It offers high efficiency by using synchronous switches and provides fast transient response to sudden load changes by implementing current mode control.
Features Fast Transient Response because of Current Mode Control System High Efficiency for All Load Ranges because of Synchronous Switches (Nch and Pch FET) and SLLMTM (Simple Light Load Mode) Soft-Start Function Thermal Shutdown and ULVO Functions Short-Circuit Protection with Time Delay Function Shutdown Function
Application Power Supply for LSI including DSP, Microcomputer and ASIC
Typical Application Circuit
Key Specifications Input Voltage Range BD9120HFN: BD9106FVM, BD9107FVM: BD9109FVM, BD9110NV: Output Voltage Range BD9109FVM: BD9120HFN: BD9107FVM: BD9106FVM, BD9110NV: Output Current BD9106FVM, BD9109FVM, BD9120HFN: BD9107FVM: BD9110NV: Switching Frequency: FET ON-Resistance
BD9110NV: BD9106FVM, BD9107FVM: BD9120HFN, BD9109FVM: Standby Current: Operating Temperature Range BD9110NV: BD9120HFN, BD9106FVM: BD9107FVM, BD9109FVM:
2.7V to 4.5V 4.0V to 5.5V 4.5V to 5.5V
3.30V ± 2% 1.0V to 1.5V 1.0V to 1.8V 1.0V to 2.5V
0.8A(Max) 1.2A(Max) 2.0A(Max) 1MHz(Typ)
Pch(Typ)/Nch(Typ) 200mΩ / 150mΩ 350mΩ / 250mΩ 350mΩ / 250mΩ 0μA(Typ)
-25°C to +105°C -25°C to +85°C -25°C to +85°C
Packages
W(Typ) x D(Typ) x H(Max)
VCC
CIN
VCC,PVCC
L
EN SW
VOUT
VOUT
CO R2
RITH
ITH GND,PGND
R1
HSON8
MSOP8
2.90mm x 3.00mm x 0.60mm 2.90mm x 4.00mm x 0.90mm
CITH
Figure 1. Typical Application Circuit
SON008V5060 5.00mm x 6.00mm x 1.00mm
Product structure : Silicon integrated circuit
www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. T SZ22111 • 14 • 001
This product has no designed protection against radioactive rays.
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TSZ02201-0J3J0AJ00090-1-2 03.Apr.2019 Rev.004
BD9106FVM BD9107FVM BD9109FVM BD9110NV BD9120HFN
Pin Configuration (Top View)
(Top View)
1 ADJ
VCC 8
1 VOUT
VCC 8
2 ITH
PVCC 7
2 ITH
PVCC 7
3 EN
SW 6
3 EN
SW 6
4 GND
PGND 5
4 GND
PGND 5
Datasheet
Figure 2. BD9106FVM, BD9107FVM
ADJ 1
(Top View)
8 EN
VCC 2 ITH 3
7 PVCC 6 SW
GND 4
5 PGND
Figure 3. BD9109FVM
(Top View)
1 ADJ
VCC 8
2 ITH 3 EN
PVCC SW
7 6
4 GND
PGND 5
Figure 5. BD9120HFN
Figure 4. BD9110NV
Pin Description
[BD9106FVM, BD9107FVM, BD9109FVM]
Pin No.
Pin Name
1 ADJ/VOUT
2 ITH
3 EN
4 GND
5 PGND
6 SW
7 PVCC
8 VCC
[BD9110NV]
Pin No.
Pin Name
1 ADJ
2 VCC
3 ITH
4 GND
5 PGND
6 SW
7 PVCC
8 EN
[BD9120HFN]
Pin No.
Pin Name
1 ADJ
2 ITH
3 EN
4 GND
5 PGND
6 SW
7 PVCC
8 VCC
Function Output voltage detection pin / ADJ for BD9106FVM·BD9107FVM GmAmp output pin/connected to phase compensation capacitor Enable pin(active h.