BD9470AFM
中型、大型LCD背光用白光LED驅動器
BD9470AFM
BD9470AFM
中型、大型LCD背光用白光LED驅動器
BD9470AFM是白光LED用高效率驅動器，適用於大型面板液晶驅動器。BD9470AFM內建了針對光源（LED串聯連接的陣列）提供適當電壓的DCDC轉換器。BD9470AFM內建了過電壓保護（OVP: over voltage protection）、過電流檢測（OCP: over current limit protection of DCDC）、短路電路保護（SCP: short circuit protection）、開路保護（open detection of LED string）等針對異常狀態的保護功能。因此，可在更寬的輸出電壓條件及負載條件下使用。
Product Detail
規格:
Topology
Boost
Vin(Min.)[V]
9
Vin(Max.)[V]
35
Total Output Current (Max.)[mA]
250
Number of Outputs
6
Switching Frequency (Max.)[MHz]
0.15
Dimming
PWM
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
18.5x9.9 (t=2.41)
功能:
· 6chLED constantcurrent driver· LED maximum output current 250mA
· Individual PWM dimming modulation allowed for LEDs
· ±2%LED current accuracy (when eachLED is set to 130mA)
· Built-inLED feedback voltage automatic adjustment circuit according toLED current
· Built-in start-up circuit independent of PWM light modulation
· built-in VOUT・FB voltage maintenance function when PWM=Low（0%）
· Built-in LED current stabilization circuit while scanning operation is performed
· Built-in VOUT discharge circuitwhile shutdown
· Built-inLED protection(OPEN / SHORT protection)
· Individual detection and individual LED OFF for both open and short circuit
· AdjustableLED short-circuit protection threshold
· PWM-independentLED protection
· VOUT over voltage protection (OVP) and reduced voltage protection(SCP) circuit
· Built-in failure indication function
· Built-inISET pin short-circuit protection circuit
