QX7135 Datasheet PDF - QXMD


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QX7135
QXMD

Part Number QX7135
Description Constant Current LED Driver
Page 5 Pages

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Preliminary
QX7135
Constant Current LED Driver QX7135
General Description
THE QX7135 is a constant current regulator for
driving LEDs with low quiescent current and low
dropout voltage. The current ranges from 100mA
to 400mA with 10mA step.
No external com ponent is required to achieve a
constant current LED driver.
Soft start, therm al protection and low voltage
protection are also provided.
Ordering Information
QX7135 X X X
Sink Current:
10: 100mA
11: 110mA
39: 390mA
40: 400mA
Package Type:
T: SOT-252-2
E: SOT-89-3
Features
y Sink current: 100mA to 400mA with 10mA
step.
y Power supply voltage: 2.7-6V
y Low drop out voltage: 150mV@350mA
y Low quiescent current: 250uA
y Thermal protection
y Soft start
y Low voltage protection: 2.5V
y SOT-89-3 and TO-252-2 packages
Applications
y Power Led driver
Block Diagram and Typical Applications
2.7-6V
Low voltage
protection
Thermal
protection
VDD
50mV
bandgap
LED
Soft start QX7135 GND
QX Micro Devices Co., Ltd.
泉芯电子技木有限公司
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Pin Assignment
Preliminary
QX7135
QX7135EXX
(SOT-89-3)
12
LED GND
3
VDD
QX7135TXX
(TO-252-2)
12
GND
LED
3
VDD
Absolute Maximum Ratings
Type
Symbol
Description
Value
Unit
Voltage
Vmax Maximum voltage on VDD and LED pins
10
V
Vmin-max
Voltage range on LED pin
-0.3~VDD+0.3 V
Current
ILEDmax
Maximum current on LED pin
500 mA
Power dissipation PSOT-89-5
Maximum Power dissipation for SOT-89-3 package 0.5
W
PSOT-252-3
Maximum Powe r di ssipation f or S OT-252-2 0.8 W
package
Thermal
Tmin-max
Tstorage S
Operation temperature range
torage temperature range
-20~85
-40~165
oC
oC
ESD
VESD
ESD voltage for human body model
2000
V
Electronic Characteristics
Parameter Symb
ol Test Condition
Min Typ Max Unit
Sink current range
VD
D=3.6
100 400 mA
VDD range
Sink current accuracy
ILE
ILED/ILED
D=350mA
-5
2.7
6.0 V
5%
Load regulation
VLE
D=0.2V to 3V
VDD=3.6V
2 mA/V
Line regulation
Output dropout voltage
Supply current
Low voltage protection
Thermal protection
VD
VDO
IDD
D=3V to 5.5V
2 mA/V
150 mV
250 uA
2.3
2.5 2.7
V
140 oC
QX Micro Devices Co., Ltd.
泉芯电子技木有限公司
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Preliminary
Typical Dropout Performance
ILED VS. VLED
300
250
200
150
100
50
0
0
200 400
VLED(mV)
Typical Power Supply Current
300
280
260
240
220
200
180
160
140
120
2
3
4
VDD(V)
600
5
QX7135
800
6
QX Micro Devices Co., Ltd.
泉芯电子技木有限公司
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Preliminary
Package Information
SOT-89-3 package outline dimensions
QX7135
Symbol
Dimensions In millimeter
Min Max
A 1.400 1.600
b 0.320
0.520
b1 0.400
0.580
c 0.350
0.440
D 4.400
4.600
D1 1.550 REF
E 2.300
2.600
E1 3.940
4.250
e 1.500 TYP
e1 3.000 TYP
L 0.900
1.200
Dimensions In Inches
Min Max
0.055
0.063
0.013
0.020
0.016
0.023
0.014
0.017
0.173
0.181
0.061 REF
0.091
0.102
0.155
0.167
0.060 TYP
0.118 TYP
0.035
0.047
QX Micro Devices Co., Ltd.
泉芯电子技木有限公司
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