Part No. Topology Input
Voltage		 Frequency Output Voltage Max.
LED No. 		Backlight
Type 		Brightness Control Package
HT7936A Charge Pump 2.8V~5.0V 1.0MHz 5.0V 4 Parallel PWM SOT23-6
HT7936B 4.5V 6
Part No. Topology Input
Voltage		 Frequency Typical OVP Maximum Efficiency Max.
LED No. 		Backlight
Type 		Dimming
Frequency		 Package
HT7937 boost 2.5V~5.5V 1.2MHz 28V 85% 6 Single Series WLED -- SOT23-6
HT7938 boost 2.6V~5.5V 1.2MHz 39V 88% 10 Single Series WLED < 1kHz SOT23-6
HT7938A boost 2.6V~5.5V 1.2MHz 39V 88% 10 Single Series WLED Up to 200kHz SOT23-6
HT7939 boost 2.6V~5.5V 1.2MHz 32V 90% 40 Series/Parallel Mixed < 1kHz SOT23-6
HT7939A boost 2.6V~5.5V 1.2MHz 32V 90% 40 Single Series WLED Up to 200kHz SOT23-6
Part No. Topology Input
Voltage		 Switching
Frequency		 Protection Maximum Efficiency Channel
Current
Matching		 Max.
LED No. 		LED
IF		 Backlight
Type 		Brightness Control LCD
Power		 Package
HT7943 boost 4.5V~26V 500kHz/1MHz LED Open/Short
OVP, OCP, OTP, UVLO		 88% ±1.5% 66 20mA Up to 11 Series 6ch Constant Current Sink PWM -- 20QFN
HT7945 boost 4.5V~26V 500kHz/1MHz LED Open/Short
OVP, OCP, OTP, UVLO		 88% ±1.5% 88 20mA Up to 11 Series 8ch Constant Current Sink PWM -- 24QFN
HT7953 boost 10V~26V 200kHz/400kHz LED Open/Short
OVP, OCP, OTP, UVLO		 90% ±2.0% 60 80mA Up to 10 Series 6ch Constant Current Sink PWM -- 48TQFP
HT7955 boost 10V~26V 200kHz/400kHz LED Open/Short
OVP, OCP, OTP, UVLO		 90% ±2.0% 80 80mA Up to 10 Series 8ch Constant Current Sink PWM   48TQFP
HT79T41* boost 4.5V~26V 500kHz/1MHz LED Open/Short
OVP, OCP, OTP, UVLO		 88% ±1.5% 44 20mA Up to 11 Series 8ch Constant Current Sink PWM v 40QFN

* Under development, available in 1Q, 2012.