同步整流DC/DC轉換器 1.5A FLASH LED驅動器 - BD7757MWX
BD7757MWX是同步整流升壓DC/DC型1ch的1.5A FLASH LED驅動器。外接應用不需要整流用二極體，有助於實現高效率以及減少貼裝面積。透過一線串列控制不僅可實現FLASH電流、TORCH電流的16級調節，還可調整計時器時間、UVLO閾值等。
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規格:
Topology
Boost
Number of Outputs
1
Vin(Min.)[V]
2.7
Vin(Max.)[V]
5.0
Output Current(Max.)[mA]
1500.0
Per Channel Drive(Max.)[mA]
1500.0
Vout(Max.)[V]
5.1
Frequency(Max.)[MHz]
2.0
Data Input
UPIC
LED Configuration
1
LDO
No
Auto Luminous Control
No
Synchronous
Yes
Integrated FET
Yes
Peak Efficiency[%]
85
Operating Temperature (Min.)[°C]
-30
Operating Temperature (Max.)[°C]
85
功能:
- Synchronous rectification step-up DC/DC converter.
- Control of registers via Uni-Port Interface Control ++ (UPIC)
- Maximum current of 1.5A in Flash mode (Low side LED Driver).
- Lighting Mode Setup
Flash Mode…1.5A (Max)
Torch Mode…450mA (Max) - Variable LED current
- Protection Circuits:
- Over Current Protection Circuit (OCP)
- Over Voltage Protection Circuit (OVP)
- VOUT – GND Short Protection Circuit
- LED Short / Open Protection Circuit
- Under Voltage Lock Out Circuit (UVLO)
- Thermal Shut Down Circuit (TSD)
- Battery Drop Protection Circuit
- Flash Timer Protection Circuit