DC/DC型針對大面板幕的白光LED驅動器 - BD93942F
BD93942F是白光LED用高效率驅動器，適用於大型面板液晶驅動器。BD93942F內建了針對光源（LED串聯連接的陣列）提供適當電壓的DC/DC轉換器。BD93942F中內建了應對異常狀態的幾種保護功能。過電壓保護(OVP: over voltageprotection) 、過電流檢測(OCP: over current limit protection of DC/DC) 、短路電路保護(SCP: short circuitprotection) 、開路保護(open detection of LED string) 等。因此，可在更寬的輸出電壓條件及負載條件下使用。
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規格:
Topology
Boost
Number of Outputs
4
Vin(Min.)[V]
9.0
Vin(Max.)[V]
35.0
Output Current(Max.)[mA]
150.0
Frequency(Max.)[MHz]
0.15
Dimming
Analog
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
功能:
- 4ch LED constant current driver and DC/DC converter
- Maximum LED Current: 150mA
- LED Feedback Voltage: 0.45V (@ILED=150mA)
so lower heat. Adjustable Feed Back Voltage
by following LED Current setting. - ±2% LED current accuracy (ADIM=2.5V,
when each LED is set to 100mA) - Analog current (Linear) dimming at ADIM pin
- LED pin rating 60V
- Individual detection and individual LED OFF for both
open and short circuits - Built-in ISET pin short-circuit protection circuit
- FET’s Gate (N pin) is driven by 5.8V swing
- Built-in Vout discharge circuit for shutdown
- Built-in Vout overvoltage protection (OVP) /
reduced voltage protection (SCP) circuit - SOP16 package