HV9910BDB3 Supertex, HV9910BDB3 Datasheet - Page 5

• Manufacturer Part Number: HV9910BDB3
• Description: LED Lighting Development Kits LO VOLT HI BRIGHT LED DRIVER DEMOBOARD
• Manufacturer: Supertex

Constant Off-Time Mode:
The HV9910BDB3 is designed to be operated in the constant off-time mode when the load is two LEDs in series. In this
mode, the line regulation of the LED current is less than 2% and the efficiency greater than 80%.
95
94
93
92
91
90
95
90
85
80
75
Fig. 5. Efficiency vs. Input Voltage Plot
Fig. 7. Efficiency vs. Load Voltage Plot
8
2
Efficiency vs. Input Voltage
Efficiency vs. Load Voltage
12
16
(@V
(@V
Input Voltage (V)
4
Load Voltage (V)
O
IN
= 7.8V)
= 12V)
●
20
1235 Bordeaux Drive, Sunnyvale, CA 94089
24
6
28
32
8
5
Fig. 8. Load Regulation of LED Current Plot
10
-1
-2
Fig. 6. Line Regulation of LED Current Plot
2
1
0
8
6
4
2
0
8
2
●
Tel: [phone]
Load Regulation (@ V
12
Line Regulation (@ V
16
Input Voltage (V)
4
Load Voltage (V)
20
●
www.supertex.com
24
O
IN
6
= 7.8V)
= 12V)
HV9910BDB3
28
32
8