Technical Note
5/22
BD60A00NUX, BD60A60NUX
www.rohm.com
2011.12 - Rev.A
© 2011 ROHM Co., Ltd. All rights reserved.
IC Power=5.0V, Coil Power=4V to 16V
・
BD60A00NUX
IC Power=5.0V, Coil Power=2.7V to 20V, LED 8serial, LED current =25mA,
coil 1094AS-10M(TOKO), SBD RB060M-60TR(ROHM)
・
BD60A60NUX
IC Power=5.0V, Coil Power=2.7V to 20V, LED 6serial, LED current =25mA,
coil 1094AS-10M(TOKO), SBD RB521A-40TR(ROHM)
BD60A00NUX Vcoil vs efficiency
VIN=5V Ta=25℃
LED 8灯(26V)
coil 1094AS-10M(TOKO)
SBD RB060M-60TR(ROHM)
LED電流設定 25mA
PWM=100%
eff1=(Vout*ILED)/(Vcoil*Icoil)*100
eff2=(Vout*ILED)/(Vcoil*Icoil+VIN+IVIN)*100
70
75
80
85
90
95
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Vcoil (V)
efficiency (%)
eff1
eff2
BD60A60 Vcoil vs efficiency
VIN=5V Ta=25℃
LED 6灯(20V)
coil 1094AS-10M(TOKO)
SBD RB521S-40(Rohm) for BD60A60
LED電流設定 25mA
PWM=100%
eff=(Vout*ILED)/(Vcoil*Icoil+VINI*VIN)*100
70
75
80
85
90
95
2
3
4
5
6
7
8
9
10
11
12
13
14
Vcoil (V)
ef
fi
ci
ency
(
%
)