LED 3 or 4-channel constant current driver chip
QX5238/9 、 / LED , 、 ,, 、。
QX5238/9 CMOS , MOS ,VDS , 15mA ,VDS 20mV, VDS , QX5238/9 3.6V LED 。, LED 50mV ,...
Description
QX5238/9 、 / LED , 、 ,, 、。
QX5238/9 CMOS , MOS ,VDS , 15mA ,VDS 20mV, VDS , QX5238/9 3.6V LED 。, LED 50mV , 98%。
QX5238/9 , 、。EN PWM LED 。
QX5238/9 , 4KV 。QX5238/9 SOT23-6 MSOP8 。
QX5238/9 LED /
:2.7V~6.0V :±2% :15mA 20mA。 LED :/ : 98% 。
LCD 、 PDA
QX5238/9
QX5238/9_DS01CN
VDD
LED1 LED2
LED3 EN
LED4 GND
1:QX5238/9
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QX5238/9 LED /
523X
:
8: 9:
523XXX
:
B:15mA C:20mA
:
8: 9:
LED1 LED2 LED3
654
5238XX
123
VDD GND EN
QX5238 (SOT23-6)
1
NC
EN
VDD
GND
4
5239XX
QX5239 (MSOP8)
8
LED1
LED2
LED3
LED4
5
QX5238/9_DS01CN
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QX5238 SOT23-6
QX5239 MSOP8
VDD
1
3
EN 3
2
GND
2
4
NC -
1
LED1
6
8
LED2
5
7
LED3
4
6
LED4
-
5
QX5238/9 LED /
()
LED LED LED LED
VDD LED1 LED2 LED3 LED4
Vref
EN
QX5238/9_DS01CN
2:QX5238/9
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GND
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( 1)
QX5238/9 LED /
VDD_MAX VLED_MAX
VDD LED1~LED4
-0.3 -0.3
7V 7V
PSOT23-6 PMSOP8
TA
SOT-23-6 MSOP8
0.25 W 0.75 W -20 85 oC
TSTG
-40 120 oC
TSD ( 30 )
230 240 oC
ESD
VESD
4000
V
1:,。
,VDD =3.7V,TA =25ºC
LED
VDD VOUT
ILED = 15mA ILED = 20mA
2.7 6.0 V 20 35 mV 25 40 mV
△ILED
△ILEDn
IINQ
VDD = 2.6-5V VLED = 0.04~1.5V
VDD = 2.6~5V VLEDn = 0.04~1.5V
EN = “Low”
±0.5 % ±2 % 0.1 1 uA
QX5238/9_DS01CN
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,VDD =3.7V,TA =25ºC
EN
EN “” EN “” EN “” EN “”
QX5238/9 L...
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