Datasheet
LED Drivers for LCD Backlights
PFC Direct Current Resonance Type White LED Driver for Large LCD
BD94122F
Ge...
Datasheet
LED Drivers for LCD Backlights
PFC Direct Current Resonance Type White LED Driver for Large LCD
BD94122F
General Description
BD94122F is a current resonance type LED Driver, which can connect to PFC directly. LED current is controlled by driving output frequency. Because this IC can use half bridge structure, it can reduce the number of external components. BD94122F has some protection functions against fault conditions such as Over
Voltage Protection(OVP), LED Short Protection(LSP) and LED Open Protection Detection(LOP).
Key Specifications Power Supply
Voltage Range: Output Driving Frequency
(Minimum Frequency Setting): Circuit Current: Operating Temperature Range:
VCC: 9.0V to 18.0V
60kHz(RRT=68kΩ) 5.0mA(Typ)
-40°C to +85°C
Package SOP18
W(Typ) x D(Typ) x H(Max) 11.20mm x 7.80mm x 2.01mm
Features 1 Channel Push Pull Control Current Feedback by Driving Frequency Resolution Timer Latch Circuit Under
Voltage Detection for IC’s Power Line (VCC UVLO) Output Over
Voltage Protection Driving Output Frequency (Minimum Frequency Setting) Tolerance: ±5% Error Signal Output from FAIL Pin Control IC Power On and Off by STB Pin Burst Control by External PWM Analog Dimming by External DC Pulse/DC Conversion Function for ADIM
Applications TV, Computer Display, LCD Backlighting
Typical Application Circuit
PVIN RN12
LED1P
LED2P
RVOM11 RVOM21
DN1 CN12 DN2 CSOFTON
RRT RSSFB CSSFB
CVOM1 RVOM12 CVOM2 RVOM22
CLSPSET RLSPSET1
RLSPSET2 RFAIL...