BD93291EFJ
2ch 同步整流降压转换器
BD93291EFJ
2ch 同步整流降压转换器
The BD93291EFJ is a dual synchronous buck converter. It integrates wide input voltage range (8.0V to 26V) synchronous buck converter and low input voltage (Vout1 : 5.0V) synchronous buck converter. The IC also incorporates a new technology called H3RegTM, a Rohm proprietary control method which facilitates ultra-high transient response against changes in load. SLLM (Simple Light Load Mode) technology is also integrated to improve efficiency when powering lighter loads. For protection and ease of use, the IC also incorporates soft start. Space-saving and high efficient switching regulator can be achieved due to built-in N-MOSFET power transistor in HTSOP-J8 package.
主要规格
特性：
ch
2
Integrated FET / Controller
Integrated FET
Topology
Buck
Synchronous / Nonsynchronous
Synchronous
Vin1(Min.)[V]
8
Vin1(Max.)[V]
26
Vout1(Min.)[V]
4.925
Vout1(Max.)[V]
5.075
Iout1(Max.)[A]
1.7
Vin2(Min.)[V]
5
Vin2(Max.)[V]
5
Vout2(Min.)[V]
0.8
Vout2(Max.)[V]
4
Iout2(Max.)[A]
0.5
SW frequency(Max.)[MHz]
2.5
Light Load mode
Yes
EN
Yes
PGOOD
No
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
4.9x6 (t=1)
特点：
・ Dual Synchronous Buck Converter in small package.・ standby mode ( Istandby = 0uA )
・ High Voltage Synchronous Buck Converter(Vout1)
- Wide input range(8.0V to 26V) *absolute voltage 30V
- H3RegTM DC/DC Converter Controller included
- Output Current 1.7A *1
- FET on resistance High-side 0.175Ω/Low-side 0.175Ω
- Internal soft-start function
- Switching Frequency 300 to 600kHz
(*According to input/output conditions)
- Fixed output voltage (5.0V ± 1.5%; Normal Mode)
・ Low Voltage Synchronous Buck Converter(Vout2)
- Input voltage range 5.0V(VOUT1)
- H3RegTM DC/DC Converter Controller included
- Output Current 0.5A *1
- FET on resistance High-side 0.25Ω/Low-side 0.25Ω
- Internal soft-start function
- Switching Frequency 1.5M to 2.5MHz
(*According to input/output conditions)
- Feedback voltage (0.8V ± 1.5%; Normal Mode)
・ Protection Circuits
Under Voltage Lockout Protection
Thermal Shutdown
Over Current Protection
・ HTSOP-J8 Package with Exposed thermal PAD.
