Block Diagram
VDD
RSW-osc
GND
Switch
Osc
+
Disable C_
Vref
REL-osc
Q
Q
Output
Osc
Q
Q
HV803
Lx
Cs
VA
VB
– OBSOLETE –
Figure 1: Test Circuit, V = 3.0V
IN
(Low input current with moderate output brightness).
ON = VDD
OFF = 0V
2MΩ
VIN = 3.0V
560µH1
750KΩ
1N4148
0.1µF2
0.1µF
100V
1 VDD REL-osc 8
2 RSW-osc
VA 7
3 Cs
VB 6
4 Lx
GND 5
HV803
2.0KΩ
10nF
Equivalent to 3 square inch lamp.
Note:
1. Murata part # LQH4N561K04 (DC resistance < 14.5Ω)
2. Larger values may be required depending upon supply impedance.
For additional information, see application note AN-H33.
15
15-3