TM1809 Datasheet PDF - Titan


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TM1809
Titan

Part Number TM1809
Description 9-channel LED driver control IC
Page 7 Pages

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9-channel LED driver control IC
T M1809
1. Description
TM1809 is a 9-channel LED driver control IC. Internal integrated with MCU digital interface,
data flip-latch, LED high voltage driver and so on .Through the external MCU control, the chip can
achieve separate luminance, and through cascade control can achieve outdoor large-screen color
dot-matrix light-emitting control. TM1809 have excellent performance and high reliability.
2. Feature
z Use high-voltage power CMOS process
z Output pin tolerance voltage is up to 24V
z Input voltage can support 6 ~24V via outside resistance connected to chip VDD pin
z Build-in stabilized voltage supply circuit
z Brightness adjustment circuit(256 level)
z Signal line for series cascade interface
z Oscillation modeBuilt-in double RC oscillator and clock synchronization
z Built-in power-on reset circuit
z PWM control side can achieve 256 adjustment, scan frequency not less than 400hz / s
z When the refresh rate is 30 frames/ s, the number of cascade is not less than 540 on
low-speed mode. And it is not less than 1080 on high-speed mode
z Data transmission speed have two selected mode ( 400Kbps and 800Kbps )
z SOP14
3. PIN Configuration
VDD
SET
DOUT
3OUTR
3OUTG
3OUTB
GND
TM1809
1 14
2 13
3 12
4 11
5 10
69
78
DIN
1OUTR
1OUTG
1OUTB
2OUTR
2OUTG
2OUTB
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9-channel LED driver control IC
T M1809
4. PIN identifications
PIN NO. Configuration PIN name
Description
14 DIN
Data in
Display data in
3 D OUT
Data out
Display cascade data out
2 S ET
Set mode
Connect to VDDlow-speed mode
Floatinghigh-speed mode
13
1OUTR
LED driver output First red PWM control output
12
1OUTG
LED driver output First green PWM control output
11
1OUTB
LED driver output First blue PWM control output
10
2OUTR
LED driver output Second red PWM control output
9
2OUTG
LED driver output Second green PWM control output
8
2OUTB
LED driver output Second blue PWM control output
4
3OUTR
LED driver output Third red PWM control output
5
3OUTG
LED driver output Third green PWM control output
6
3OUTB
LED driver output Third blue PWM control output
1V
DD
Logical power
supply
5V±10%
7
GND
Logical GND Connect to system GND
5. Electrical parameters
Limited parameterTa = 25, Vss = 0 V
Parameter
Symbol
Range
Unit
Logic power supply voltage
VDD
+4.5 +5.5
V
Output tolerance voltage
VOUTx
24
V
Logic input voltage
VI1 -0.5 VDD + 0.5
V
LED driver output current
IO1
80
mA
Power Dissipation
PD
400
mW
Operating Temperature
Topt
-40 +80
Storage Temperature
Tstg
-65 +150
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9-channel LED driver control IC
T M1809
The normal scope of workTa = -20 +7 0℃,Vss = 0 V
Parameter
Symbol
Min Typical Max. Unit
Logic power supply voltage
VDD
5V
Test
Condition
-
High-level voltage
VIH 0.7 VDD -
VDD
V
-
Low-level voltage
VIL
0
-
0.3
VDD
V-
Electrical characteristicsTa = -20 +7 0℃,VDD = 4.5 5. 5 VVss = 0 V
Parameter
Symbol Min Typical Max. Unit
Test Condition
Low-level output
current
IOL1 5
0
80
-
mA
OUTR/OUTG/OUTB
Vo=0.3V
Low-level output
current
Idout
10
-
-
mA VO = 0.4VDOUT
Input Current
II - - ±1 μA VI = VDD / VSS
High-level input
voltage
Low-level input
voltage
VIH
0.7
VDD
-
VIL -
-
0.3
VDD
V
V
DINSET
DINSET
Hysteresis voltage
VH
- 0.35 -
V
DINSET
Dynamic current
consumption
IDDdyn
-
-
1 mA No load, display off
Power Dissipation
PD
250 mW
(Ta=25°C)
Thermal Resistance Rth(j-a) 79 .2
190 °C/W
Switching characteristicsTa = -20 +70 ℃,VDD = 4.5 5.5 V
Parameter
Symbol Min Typical Max.
Unit
Test Condition
Oscillation
Fosc1
-
400
-
frequency
Fosc2
-
800
-
KHz
KHz
/
/
Propagation delay
time
tPLZ
tPZL
-
-
- 300
- 100
ns DIN DOUT
ns CL = 15pF, RL = 10K
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Fall Time
TTHZ -
Data rate
Fmax 400
Input capacitance CI
-
6. Function Description
9-channel LED driver control IC
T M1809
- 120
μs
CL = 300pF
OUTR/OUTG/OUTB
- - Kbps
Duty rate 50%
- 15
pF
-
TM1809 adopts single wire to communicate and RZ (return to zero code) method to sent signal. On
power-on re set st atus, wh en chip rec eive co mplete th ree group s of 24b its d ata fro m DIN, i t begin
transmitting data to ne xt chip vi a DO. Bef ore transmission, DO will be ke ep low-level. O UTR,
OUTG, OUTB these 3 PWM will output different duty signal according to received data, the cycle of
signal is 4ms.If input signal is RESET, the chip will be ready to receive new data after displaying all
the rec eived d ata. The sam e when recei ve new 3 groups of 24bit dat a completely, it will tr ansmit
them to next chip via DO.
TM1809 has the ability of auto-shape and signal transmission. The number of cascade is not
limited by signal transmission, just limited by screen refresh speed. For example, we design 1080
cascade with 360ea TM1809 IC, the refresh time can be calculated is 360*0.8*2=0.576ms (delay
time per IC is 0.8us), no any twinkle will be detected.
7. Timing Waveform
Input Pattern
0 T0H
T0L
1
RESET
T1L
T1H
Treset
Low-speed mode time
Name Des cription
T0H 0high-level time
T1H 1high-level time
T0L 0low-level time
T1L 1low-level time
Treset Resetlow-level time
Min TYP
450 60
1050 1
1050 1
450 60
- 24
0
200
200
0
Max
750
1350
1350
750
24
Unit
ns
ns
ns
ns
us
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