Special three-channel LED driver control circuit - ETC
Description
LED
TM1804
TM1804LED(),MCU 、 、LED ,VDD5V。 MCU、 。、。
CMOS 24V VDD5V VDD,6V~24V ,256,1024 :RC, , PWM256,400Hz 30/s,512,1024 400Kbps800Kbps :SOP8、DIP8
:、、、、。
DC R1
DC R2
DC R3
DC R1
DC R2
DC R3
DI VCC GND VCC
RI
OUTR DIN SET
OUTG
OUTB DO VDD GND 104 DO
RO R D1 DC
OUTR DIN SET
OUTG
OUTB DO VDD GND 104 DO NEXT R D1 DC
TM1804
IC1
TM1804
ICn
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LED
TM1804
DIN SET DO
VDD
VDD
D W 5V
PWM OSC
OUTR OUTG OUTB
GND
GND
OUTR OUTG OUTB GND
1 2 3 4
8
VDD SET DIN DO
(TO P VIE W)
7 6 5
TM1 804
VDD VDD VDD OUTn
DIN SET GND
DO
GND
GND
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LED
DIN DO SET OUTR OUTG OUTB VDD GND
TM1804
6 5 7 1 2 3 8 4
I/O
I O O O O
VDD:;: Red Blue PWM PWM Green PWM DC 5V±10%,5V,
,,, ,, ESD , 。
(2) (1)
VDD VIN IOUT VOUT FCLK Topr Tstg ESD (DC) (HBM) (MM) DIN,SET OUTR,OUTG,OUTB OUTR,OUTG,OUTB DIN
-0.
5 ~+7.
0 -0.
5~VDD+0.
5 60 -0.
5~+30.
0 800 -40~+85 -55~+150 2000 200
V V mA V KHZ ℃ ℃ V V
(1),,,。 ,。 (2)。
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LED
(-40℃~+85℃,GND=0V)
TM1804
4.
5 3.
8 GND
TM1804
5.
0
6.
5 24.
0 VDD 1.
5
V V V V mA mA mA ℃ ℃
: :VCC= DC4.
5V~6.
5V VCC VO OUT VIH VIL IOH VCC=5.
0V,SDO=4.
8V IOL VCC=5.
0V,SDO=0.
5V OUTR, OUTG, OUTB = IOLC RGB 0.
5V TA TJ
1 10 40 -40 -40 45 +85 +125
( VCC=4.
5V~6.
5V -40℃~+85℃, VCC=5V TA=+25℃) TM1804
VDD-0.
5 -1 1
VDD 0.
5 1
V V uA mA mA uA ms mA ℃/W mW ohm
VOH VOL IIN IDD IOLC IOLKG TPWM IDDdyn Rth(j-a) PD RON
VDD RGB OUT RGB
IOH=-6mA:DO IOL=10mA:DO DIN = VCC GND OUTR, OUTG, OUTB ,DIN, DO=,VDD=5.
0V OUTR, OUTG, OUTB = 0.
5V OUTR, OUTG, OUTB =OFF OUT1K OUTR, OUTG, OUTB =OFF DO= -(Ta=25°C) VDD=5.
0V
3 40
5 45 0.
1 4 1
3
3.
5
79.
2 13 -
190 250 14
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LED
( VCC=4.
5V~6.
5V -40℃~+85℃, VCC=5V TA=+25℃) fosc1 -400 fosc2 -800 tPLZ DIN → DOUT tPZL -CL = 15pF...
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