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BD1604MUV, BD1604MVV
● Reference Data (Evaluation under LED V F =3.2V)
Technical Note
0.5
2
100
0.4
1.5
90
80
DOWN
0.3
0.2
1
Ta=85 ℃
Ta=25 ℃
70
0.1
Ta=85 ℃
Ta=25 ℃
Ta=-30 ℃
0.5
60
50
UP
Ta=-30 ℃
0
0
40
3
3.5 4 4.5 5
5.5
0
1 2 3 4
5
2.5
3 3.5 4 4.5 5
5.5
100
INPUT VOLTAGE : VBAT[V]
Fig.1 Circuit Current
(Standby)
100
INPUT VOLTAGE : VBAT[V]
Fig.2 Circuit Current
(×1.0 Mode Operation)
100
SUPPLY VOLTAGE : VBAT[V]
Fig.3 Efficiency Hysteresis
(20mA × 4 LEDs)
90
90
Ta=-30 ℃
90
Ta=-30 ℃
80
70
Ta=85 ℃
Ta=25 ℃
Ta=-30 ℃
80
70
80
70
60
50
40
60
50
40
Ta=25 ℃
Ta=85 ℃
60
50
40
Ta=25 ℃
Ta=85 ℃
2.5
3 3.5 4 4.5 5
5.5
2.5
3 3.5 4 4.5 5
5.5
2.5
3 3.5 4 4.5 5
5.5
25
SUPPLY VOLTAGE : VBAT[V]
Fig.4 Efficiency
(5mA × 4 LEDs)
25
SUPPLY VOLTAGE : VBAT[V]
Fig.5 Efficiency
(15mA × 4 LEDs)
25
SUPPLY VOLTAGE : VBAT[V]
Fig.6 Efficiency
(20mA × 4 LEDs)
20
Ta=85 ℃
Ta=25 ℃ Ta=-30 ℃
20
Ta=85 ℃
Ta=25 ℃
Ta=-30 ℃
20
Ta=85 ℃
Ta=25 ℃
Ta=-30 ℃
15
10
5
0
15
10
5
0
15
10
5
0
0
0.3 0.6 0.9
1.2
0
0.3 0.6 0.9
1.2
0
0.3 0.6 0.9
1.2
35
30
25
20
15
10
5
0
LED VOLTAGE : VLED[V]
Fig.7 LED Current (20mA)
(VBAT=2.7V)
25
20
15
10
5
0
LED VOLTAGE : VLED[V]
Fig.8 LED Current (20mA)
(VBAT=3.6V)
LED VOLTAGE : VLED[V]
Fig.9 LED Current (20mA)
(VBAT=5.5V)
0
50
100
RSET[kO]
150
200
0
20
40 60
PWM DUTY[%]
80
100
Fig.10 LED Current vs. RSET
(Ta=25 ℃ )
Fig.11 LED Current vs. PWM Duty
(Cycle 100Hz)
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3/10
2011.06 - Rev.B
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