2.55-5.5V 0.4A/0.3A 2ch Buck converter - BD91501MUVROHM's high efficiency dual step-down switching regulator BD91501MUV is a 2ch output power supply designed to produce a low voltage including 2.55V/0.4A and 1.8V/0.3A from 3.3V power supply line. Offers high efficiency with our original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster transient response to sudden change in load.
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| * This product is a STANDARD grade product and not recommend for on-vehicle devices. | ||||
| Grade | Standard |
| ch | 2 |
| Integrated FET / Controller | Integrated FET |
| Buck / Boost / Buck-Boost / Inverting | Buck |
| Synchronous / Nonsynchronous | Synchronous |
| Vin1(Min.)[V] | 2.55 |
| Vin1(Max.)[V] | 5.5 |
| Vout1(Min.)[V] | 1.8 |
| Vout1(Max.)[V] | 2.55 |
| Iout1(Max.)[A] | 0.4 |
| Vin2(Min.)[V] | 2.55 |
| Vin2(Max.)[V] | 5.5 |
| Vout2(Min.)[V] | 1.8 |
| Vout2(Max.)[V] | 1.8 |
| Iout2(Max.)[A] | 0.3 |
| SW frequency(Max.)[MHz] | 1.65 |
| Light Load mode | Yes |
| EN | Yes |
| PGOOD | No |
| Operating Temperature (Min.)[°C] | -30 |
| Operating Temperature (Max.)[°C] | 105 |
- ・Offers fast transient response with current mode PWM control system.
・Offers highly efficiency for all load range with
synchronous rectifier (Pch/Nch FET) and SLLMTM (Simple Light Load Mode)
・2ch output power supply (2.55V, 1.8V)
・2ch output ON/OFF individual control
・Full 100% Duty function
・Incorporates soft start function
・Incorporates thermal protection and UVLO function
・Incorporates short-current protection with timer latch
・Incorporates shutdown function Icc=0μA (Typ.)
・Employs small surface mount package: VQFN016V3030
・Halogen free
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Capacitor Calculation for Buck converter IC
Inductor Calculation for Buck converter IC
Resistor Value Table to set Output Voltage of Buck Converter IC
Thermal Resistance
PCB Layout Techniques of Buck Converter
The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit
Calculation of Power Loss (Synchronous)
Considerations for Power Inductors Used for Buck Converters
For ICs