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QX5252E

型号:

QX5252E

品牌:

ETC[ ETC ]

页数:

5 页

PDF大小:

117 K

QXMD  
QX5252  
LED Driver QX5252  
Overview:  
Features:  
QX5252 is a solar LED lighting fixtures for  
ASIC design. It is driven by a switching  
circuit, Optical switch circuit, over discharge  
protection circuit, the internal integration of  
Short Based diodes and other circuit. Can be  
only one external inductor Composition of  
solar lighting devices. QX5252 QX5252 using  
patented technology, LED  
Operating voltage: 0.9V-1.5V  
Output current: 3mA-300mA  
Patented over-discharge protection: no flash off  
Integrated light control switch  
Integrated Schottky Diode  
Only one inductor external components  
High efficiency  
Undervoltage shutdown makes no blinking  
LED lights.  
TO-94, DIP-8 package  
Package:  
QX5252F: TO-94  
QX5252E: DIP-8  
A typical application  
A typical application II  
Pin Definition  
Pin name  
Package and pin number  
Functional Description  
TO-94  
1
DIP-8  
6
SBAT  
BAT  
Positive terminal  
connected solar cells  
2
7
Rechargeable battery  
positive terminal  
connection  
VSS  
LX  
LS  
3
4
-
2
Ground  
3
Power switch drain  
Optical detection input  
Not connected (empty)  
5
NC  
-
1, 4, 8  
QX5252  
NC  
NC  
TO-94  
QX5252  
VSS  
LX  
BAT  
SBAT  
LS  
DIP-8  
NC  
BAT  
LX  
SBAT  
VSS  
Limit Parameter  
Symbol  
Parameter  
Value  
Units  
V
Vmax  
Threshold voltage of the 5.5V  
terminal IC  
Imax  
TOPR  
LX-side current limit  
0.8A  
A
Operating temperature -40 - +125  
range  
°C  
TSTG  
VESD  
Storage Temperature  
-65 - +150  
2000V  
°C  
V
ESD voltage (Human  
Body Model)  
LED power settings:  
10−  
2VIN  
6
LED power consumption is set by the inductance L:  
One VIN is charging the battery voltage.  
=
P
LED  
L
Light control switch set:  
QX5252F:  
QX5252E:  
directly controlled by the solar panels.  
LS side need to add a photosensitive resistor and a normal resistance.  
LS voltage is set by the following formula:  
R1  
=
VLS  
VIN  
R1+R2  
When VLS is higher than 0.3 * VIN, the light control switch shuts the LED off, when VLS is lower  
than 0.22 * VIN, the light control switches LED lights on.  
Voltage 1.3V  
330uH 270uH 220uH 150uH 100uH 82uH  
11mA 14.5mA 15.5mA 25mA 34.5mA 38mA  
1.3V  
1.3V  
1.3V  
1.3V  
1.3V  
1.3V  
1.3V  
1.3V  
L
56uH  
50mA  
47uH  
75mA  
33uH  
110mA  
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