3-channel constant current LED driver dedicated circuit
3 LED
TM1914
TM1914LED,(DIN、FDIN), DO,。MCU、 、LED、PWM。VDD5V,。 、LED。,。
CMOS OUT24V VDD5V,6~24V 18mA PWM...
Description
3 LED
TM1914
TM1914LED,(DIN、FDIN), DO,。MCU、 、LED、PWM。VDD5V,。 、LED。,。
CMOS OUT24V VDD5V,6~24V 18mA PWM,256 ():±3% ():±5% :DINFDIN, ,DINDIN,FDINFDIN,D01 D02, : RC, , , 800KHz :MSOP10
DIN FDIN SET
DO1 DO2
VDD VDD
PWM
OUTR OUTG OUTB
GND
GND
OSC
1
©Titan Micro Electronics V1.0
1 www.titanmec.com
3 LED
TM1914
OUTR OUTG OUTB GND DO2
1 10 2 9 3 Top View 8 4 7 5 6
2
VDD SET FDIN DIN DO1
DIN FDIN DO1 DO2 SET OUTR OUTG OUTB VDD GND
7 8 6 5 9 1 2 3 10 4
I/O
I I O O I O O O ---
1 2 ,GND N, N, N,
VDD VDD OUT
DIN/FDIN
DO1/DO2
GND
GND
GND
3
, , , , , ESD ,。
©Titan Micro Electronics V1.0
2 www.titanmec.com
3 LED
DIN、FDIN OUT
TM1914
VDD Vin Vout Topr
-0.4~+7.0 -0.4~VDD+0.7 -0.4~+32.0 -40~+85
V V V ℃
Tstg -50~+150 ℃ (HBM) 3000 V ESD (MM) 300 V (1),,,。 ,; (2)。
-40~+85℃,
DIN、FDIN DO1、DO2 SET OUT VDD Vin Vdo Vset Vout VDD=5V,DIN、FDIN 1KΩ VDD=5V,DO1、DO2 1KΩ VDD=5V OUT=OFF
4.5
TM1914
5.0
6.5 VDD+0.4 VDD+0.4 VDD+0.4 24.0
V V V V V
VDD=3.0~5.5V -40~+85℃,
OUT OUT Voh Vol Vih Vil Ioh Iol Iin IDD Iout Iolkg ΔIolc0 ΔIolc1 Pd Ioh=3mA Iol=10mA VDD=5.0V VDD=5.0V VDD=5.0V,Vdo=4.9V VDD=5.0V,Vdo=0.4V DIN、FDIN VDD VDD=4.0V,GND=0V, OUTR,OUTG,OUTB=ON, Vout=3.0V OUTR,OUTG,OUTB=OFF, Vout=24.0V OUTR,OUTG,OUTB=ON, Vout=3.0V OUTR,OUTG,OUTB=ON, Vout=3.0V Ta=25℃
TM1914
VDD-0.5 3.5 0 1 10 1 0.5 17.1 1.2 18 1.5 18.9 0.5 ±3 ±5 250 0.4 VDD 1.5
V V V V mA mA μA mA mA μA % % mW
...
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