TPS855 Datasheet, PDF (7/8 Pages) Toshiba Semiconductor – Luminosity Adjustment for TV Screens, CRT Monitors and Liquid-crystal Display Monitors Other Equipment Requiring Luminosity Adjustment

1
Ta = 25°C
Spectral response
0.8
(typ.)
0.6
0.4
0.2
0
200
400
600
800
1000
1200
Wavelength λ (nm)
Measurement Circuits
Light
V_CC
I_L
TPS855(F)
OUT
A
TPS855(F)
Radiation pattern - horizontal direction
(typ.)
Ta = 25°C
20° ^{10° 0° 10°} _20°
30°
30°
40°
40°
50°
50°
60°
60°
70°
70°
80°
80°
90°
90°
0 0.2 0.4 0.6 0.8 1.0
Relative sensitivity
Radiation pattern - vertical direction
(typ.)
Ta = 25°C
20° ^{10° 0° 10°} _20°
30°
30°
40°
40°
50°
50°
60°
60°
70°
70°
80°
80°
90°
90°
0 0.2 0.4 0.6 0.8 1.0
Relative sensitivity
V_CC
I_LEAK
TPS855(F)
OUT
A
Figure 1 Light current measurement circuit
Light
I_CC
A
V_CC
TPS855(F)
OUT
R_L
Figure 2 Dark current measurement circuit
Light
V_CC
TPS855(F)
R_{L V VO}
Figure 3 Consumption current measurement circuit Figure 3 Output voltage measurement circuit
Pulse drive
White LED
V_CC
TPS855(F)
OUT
R_L
I_F
t_d
t_s
2.5 V
V_OUT
GND
t_r
t_f
Figure 5 Switching measurement circuit and waveform
7
90%
10%
2007-10-01