| 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 |
Brightness Control |
Package |
| HT7937 |
boost |
2.5V~5.5V |
1.2MHz |
28V |
85% |
6 |
Single Series WLED |
PWM/Analog DC |
SOT23-6 |
| HT7938 |
boost |
2.6V~5.5V |
1.2MHz |
39V |
88% |
10 |
Single Series WLED |
PWM/Analog DC |
SOT23-6 |
| HT7939 |
boost |
2.6V~5.5V |
1.2MHz |
32V |
90% |
40 |
Series/Parallel Mixed |
PWM/Analog DC |
SOT23-6 |
| HT7940* |
boost |
4.5V~26V |
600kHz~
1.2MHz |
LED Open/Short Protection |
88% |
60 |
Up to 10 Series 6ch Constant Current Sink |
PWM |
20QFN |
| HT7941* |
boost |
4.5V~26V |
600kHz~
1.2MHz |
LED Open/Short Protection |
88% |
80 |
Up to 10 Series 8ch Constant Current Sink |
PWM |
24QFN |
* Under development, available in 3Q, 2010. |
