PQ6CU11X1APQ Datasheet, PDF (4/4 Pages) Sharp Electrionic Components – CMOS Step-up Chopper Regulator

PQ6CU11X1APQ
　　Block Diagram
L
D
VIN CIN
VIN
VSW
CTRL
VO
Soft start
circuit
ON/OFF
Circuit
Over
voltage
protection
CO
Control
Circuit
PWM CMP.
ERROR AMP FB
95mV
Rset
OSC Σ
GND
　 Example of application
VIN
3.6V
CIN
2.2μF
VIN
6
CTRL ₄
L
22μH
VSW
1
5 _VO
2
GND
3
FB
D
Rset
4.75Ω
CO
0.1μF
IO
20mA
ON/OFF
■　Current-limit
This product monitors the switch current at every cycle and limits the switch current not to exceed the overcurrent
detection level.
Please set the white LED current under the maximum LED current shown in the graph indicated below within the
range of input voltage (VIN) you use.
Fig.10 Use Range of White LED
140
Ta=25˚C
120
VF=3.8V
L=22μH
100
2LEDｓ
80
3LEDｓ
60
4LEDｓ
40
6LEDｓ
20
0
2.5 3 3.5 4 4.5 5 5.5
VIN(V)
Sheet No.: OP06059
4