TOHM BH1603FVC service manual
TECHNICAL NOTE
Ambient Light Sensor IC Series
Analog Current Output Type
Ambient Light Sensor IC
BH1603FVC
● Descriptions
BH1603FVC is an analog current output ambient light sensor. This IC is the most suitable to obtain the ambient light data for
adjusting LCD and Keypad backlight of Mobile phone for power saving and better visibility
● Features
Compact surface mount package 3.0 × 1.6 mm
1)
2) Spectral sensitivity close to human eyes sensitivity.
Output current in proportion to brightness.
3)
Minimum supply voltage 2.4V
4)
5) Built-in shutdown function
3 steps controllable output current gain.
6)
1.8V logic input interface
7)
8) Low sensitivity variation (+/-15%)
● Applications
Mobile phone, LCD TV, PDP TV, Laptop PC, Portable game console, Digital camera, Digital video camera, Car navigation,
PDA, LCD display
● Absolute Maximum Ratings
Parameter Symbol Limits Units
Supply Voltage Vmax
Operating Temperature Topr -40～85 ℃
Storage Temperature Tstg -40～100 ℃
Iout Current Ioutmax 7.5 mA
Power Dissipation Pd
70mm × 70mm × 1.6mm glass epoxy board. Derating at 3.47mW/℃ for operating above Ta=25℃.
※
● Operating Conditions
Parameter Symbol Min. Typ. Max. Units
VCC Voltage Vcc 2.4 3.0 5.5 V
June 2008
7 V
260
※
mW
● Electrical Characteristics ( VCC = 3.0V, Ta = 25℃, unless otherwise noted )
Parameter Symbol Min. Typ. Max. Units Conditions
Supply Current1 (Operate)
Supply Current2 (0 lx)
Supply Current3(Shutdown)
IOUT Output Current1
Icc1 51 74 97
Icc2 4.5 9 13.5
Icc3sd - 0.2 0.4
Iout1 - - 0.2
(Dark Current)
IOUT Output Current2
Peak Wave Length
Incandescent/Fluorescent
Light Current Ratio
Saturated Output Voltage
GC1, GC2 Input ‘L’ Voltage VIL 0
GC1,GC2 Input ‘H’ Voltage1 V
GC1,GC2 Input ‘H’ Voltage2 V
Iout2 51 60 69
λp - 560 - nm
rIF - 1.0 - times
2.6 2.9 3.0
V
OMAX
-
1.4 - Vcc
IH1
2.0 - Vcc
IH2
Wake-up Time twu - 45 128
Gain Ratio
H-Gain Mode/M-Gain Mode
Gain Ratio
M-Gain Mode/L-Gain Mode
White LED is used as optical source
※
rHM 9.5 10 10.5
rML 9.5 10 10.5
uA
uA
uA
uA
uA
V
0.4 V
V
V
us
times
times
Ev=100 lx (H-Gain Mode) ※
Ev=0 lx (H-Gain Mode)
V
GC1=V GC2
=0 No Input Light
Ev=0 lx
Ev=100 lx (H-Gain Mode) ※
Ev=100 lx
Ev=100 lx, RL=220kΩ
(H-Gain Mode)
※
2.4V ≦ VCC ≦ 3.6V
3.6V ＜ VCC ≦ 5.5V
Shutdown → H-Gain Mode
Ev=100lx
※
Ev=100lx ※
Ev=100lx ※
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● Reference Data
1.2
1.0
0.8
0.6
Ratio
0.4
0.2
0.0
400 500 600 700 800 900 1000 1100
Wave length [ nm ]
Fluorescent Light
Incandescent Light
Halogen Light
Kripton Light
Artifical Sun Light
White LED
00.511.52
Ratio
Fig.1 Spectral Response
1.2
1
0.8
受信指向角特性
0.6
Ratio
0.4
0.2
0
-90 -60 -30 0 30 60 90
1pin
-
-
Angle [ deg ]
+
+
Fig.2 Light Source Dependency
( Fluorescent Light is set to '1' )
1.2
1
0.8
暗電流温特
0.6
Ratio
0.4
0.2
0
-90 -60 -30 0 30 60 90
Angle [ deg ]
-
1pin
-
+
+
Fig.4 Directional Characteristics 1 Fig.5 Directional Characteristics 2 Fig.6 Ta – IOUT ( 0 lx )
100000
10000
1000
100
10
IOUT [ uA ]
1
0.1
0.01
0.001
0 1 100 10,000 1,000,000
0.01
照度 [ lx ]
Illuminance [ lx ]
Fig.3 Illuminance – IOUT
Characteristics
100
10
1
0.1
IOUT [ uA ]
0.01
0.001
-40 -20 0 20 40 60 80 100
Ta [ ℃ ]
H-Gain
M-Gain
L-Gain
H-Gain
M-Gain
L-Gain
SD
100
10
1
0.1
ICC [ uA ]
0.01
0.001
-40 -20 0 20 40 60 80 100
Ta [ ℃ ]
Fig.7 Ta – ICC ( 0 lx )
10000
1000
100
L-Gain
M-Gain
10
WakeupTime [ us ]
H-Gain
1
100 1000 10000
[ lx ]
照度
Illuminance [ lx ]
H-Gain
M-Gain
L-Gain
SD
1.4
1.2
1
0.8
Ratio
0.6
0.4
0.2
0
-40-20 0 20406080100
Ta [ ℃ ]
Fig.8 IOUT Temperature dependency
( 100 lx )
1.4
1.2
1
0.8
0.6
Ratio
0.4
0.2
0
2 2.5 3 3.5 4 4.5 5 5.5 6
VCC [ V ]
Fig.9 IOUT VCC dependency
Fig.10 Illuminance – Wake up Time
3/9
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