PQ6CB11X1CP Datasheet, PDF (3/4 Pages) Sharp Electrionic Components – Compact SMD CMOS Step-up LED Driver

PQ6CB11X1CP
Fig.1 Standard measuring circuit
L
22μH
D
VO
A
4
Iq
Isd
A
3
IL
ILEAK
IO
VIN
CIN
2.2μF
6
A
ICTRL
5
IFB
R2
105.3kΩ
A
CO
1
1μF
2
VC
V
Vref
R1
1kΩ
O N / OFF control logic　
4pin
Output　
LOW
HIGH
OFF
ON
OPE N
OFF
L:VLP4612(TDK CO.,LTD.)
D:MA2Z720(MATSUSHITA ELECTRIC INDUSTRIAL CO.,LTD)　
Fig.2 Power Dissipation vs.Ambient
Temperature
400
Pd : Mounting PCB　
300
200
100
0
-40 -25 0 25 50 75 ₈₅ 100 125 150
Ambient temperature Ta (°C)
Fig.3 Reference Voltage Fluctuation vs.
Junction Temperature
1.0
VIN=VCTRL=3.6V
L=22μH
White LED:3LEDs
IO=20mA
0.5
0
-0.5
-1.0
-50 -25
0 25 50 75 100 125
Junction temperature Tj (°C)
Fig.4 Reference Voltage Fluctuation vs.
Input voltage
1.0
VIN=VCTRL=3.6V
L=22μH
VF=3.8V,3LED
0.5
IO=20mA
Ta=25˚C
0
-0.5
-1.0
3
3.2 3.4 3.6 3.8
4 4.2
Input voltage VIN (V)
Fig.5 Effciency vs. LED Current
100
95
90
85
80
75
70
65
60
5
VIN=VCTRL=3.6V
L=22μH
VF=3.8V,3LED
Ta=25˚C
10
15
20
LED current IO(mA)
Sheet No.: OP06061
3