TEXAS INSTRUMENTS TLC5920 Technical data
TLC5920
16x8 BIT LED DRIVER/CONTROLLER
SLAS264A – MARCH 2000 REVISED SEPTEMBER 2002
D
Drive Capability:
– Segment . . . 30 mA × 16 Bits
– Common . . . 640 mA
D
Constant Current Output ...3 mA to 30 mA
(Current Value Setting for All Channels
Using External Resistor)
D
Constant Current Accuracy ±6% (Maximum
Error Between Bits)
D
Data Input: Clock Synchronized Serial Input
D
LED Type Applied Cathode Common
D
Logic Power Supply Voltage 4.5 V to 5.5 V
D
LED Power Supply Voltage 4.5 V to 5.5 V
D
Operating Frequency . . . 10 MHz
D
Operating Free-Air Temperature Range
–20°C to 85°C
D
48-Pin SSOL Package
description
The TLC5920 is an LED driver incorporating a
16-channel shift register, data latch, and constant
current circuitry with current value control and
8-channel common driver into a single chip. The
constant output current is capable of 30 mA for 16
bits simultaneously , and the current value can be
set by one external register. This device also
includes a 16-bit segment driver and 8-bit
common driver; therefore, the monocolor LED
array with 16 × 8 dots can be driven by only one
TLC5920, and a two-color LED array with 16 x 16
dots can be driven by two TLC5920s.
COM3
COM2
COM1
COM0
GNDLED
NC
NC
VLED
S0
S1
S2
S3
S4
S5
S6
S7
IREF
VLED
VANA
NC
GNDANA
S8
S9
S10
DL PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
GNDLED
COM4
COM5
COM6
COM7
GNDLED
SIN
LATCH
SCLK
BLANK
CSEL0
GNDLOG
CSEL1
CSEL2
VLOG
DSEL
SOUT
VLED
DSEL
S15
S14
S13
S12
S11
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 2002, Texas Instruments Incorporated
1
TLC5920
16x8 BIT LED DRIVER/CONTROLLER
SLAS264A – MARCH 2000 REVISED SEPTEMBER 2002
functional block diagram
DSEL
BLANK
CSEL0
CSEL1
CSEL2
SIN
SCLK
LATCH
IREF
3 TO 8
Decoder
16 bits
Shift Register
16 bits
Data Latch
Segment Driver
Current Control
DSEL
COM0
Common
Driver
COM7
SOUT
and
S0
S15
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
I/O
DESCRIPTION
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TERMINAL
NAME NO.
BLANK
ÁÁÁ
COM0 – COM7
ÁÁÁ
ÁÁÁ
ÁÁÁ
CSEL0 – 2
ÁÁÁ
ÁÁÁ
ÁÁÁ
DSEL
ÁÁÁ
DSEL
GNDANA
GNDLED
GNDLOG
IREF
ÁÁÁ
LATCH
ÁÁÁ
SIN
SOUT
SCLK
ÁÁÁ
S0 – S15
ÁÁÁ
VANA
VLOG
VLED
39
ÁÁÁÁ
4, 3, 2, 1, 47, 46,
45, 44
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
38, 36, 35
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
33
ÁÁÁÁ
30
21
5, 43, 48
37
17
ÁÁÁÁ
41
ÁÁÁÁ
42
32
40
ÁÁÁÁ
9, 10, 11, 12, 13, 14,
15, 16, 22, 23, 24,
ÁÁÁÁ
25, 26, 27, 28, 29
19
34
8, 18, 31
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16x8 BIT LED DRIVER/CONTROLLER
SLAS264A – MARCH 2000 REVISED SEPTEMBER 2002
Terminal Functions
Blank(light off). By turning all the output for the common driver off, the LED is turned off. When
I
ББББББББББББББББББББ
BLANK is high, the LED is turned off.
O
LED common driver output
ББББББББББББББББББББ
Common driver select. One terminal out of COM0 through COM7 is selected.
2 1 0 Common Driver
ББББББББББББББББББББ
ББББББББББББББББББББ
I
ББББББББББББББББББББ
ББББББББББББББББББББ
ББББББББББББББББББББ
Display select. When DSEL is high, the LED is turned off. Note that, when BLANK is high,
I
ББББББББББББББББББББ
the LED is turned off with no regard to the DSEL
O
Display select output. The inverted data of DSEL is clocked out.
Analog ground
LED driver ground
Logic ground
Constant current control setting. The LED current is set to the desired value by connecting
I
ББББББББББББББББББББ
an external resistor between IREF and GND.
Latch. When LATCH is high, data on the shift register goes through latch. When LATCH is
I
low, data is latched.
ББББББББББББББББББББ
I
Serial input for display
O
Serial output for display
Synchronous clock input for serial data transfer. The input data of SIN is synchronized to
I
ББББББББББББББББББББ
the rising edge of SCLK, and transferred to SOUT.
O
LED segment driver output
ББББББББББББББББББББ
Analog power supply voltage
Logic power supply voltage
LED driver power supply voltage
LLL 0
LLH 1
LHL 2
LHH 3
HLL 4
HLH 5
HHL 6
HHH 7
input.
TLC5920
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
TLC5920
mA
mA
tsuSetup time
ns
thHold time
ns
16x8 BIT LED DRIVER/CONTROLLER
SLAS264A – MARCH 2000 REVISED SEPTEMBER 2002
absolute maximum ratings† (see Note 1)
Logic supply voltage, V
LED supply voltage, V
Analog supply voltage, V
Output current, I
Output current, I
OH(S)
650 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OL(C)
Input voltage range, V
Output voltage range, V
– 0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(LOG)
– 0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(LED)
– 0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(ANA)
– 32 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
– 0.3 V to V
I
– 0.3 V to V
O
(LOG)
(LOG)
+ 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+ 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation 1500 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal resistance 83°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range (see Note 2), T
Storage temperature range, T
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values are with respect to GND terminal.
2. TJ ≤ 150°C (refer to appendix thermal condition).
–40°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
– 20 to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
recommended operating conditions
dc characteristics (see Note 3)
PARAMETER
Logic supply voltage, V
LED supply voltage, V
Analog power supply, V
Voltage between GND and V
High-level input voltage, V
Low-level input voltage, V
High-level output current, I
High-level output current, I
Low-level output current, I
Low-level output current, I
Operating free-air temperature range, TA (see Note 2)
NOTES: 2 TJ ≤ 150°C (refer to appendix thermal condition).
3. V
ANA
(LOG)
(LED)
(ANA)
(DEF), G(DEF)
IH
IL
OH
OH(S)
OL
OL(C)
must be same as V
LED
.
TEST CONDITIONS
G
= GND
(DEF)
V
= 4.5V, SOUT, DSEL
(LOG)
S0 to S15
V
= 4.5V, SOUT, DSEL
(LOG)
DUTY = 1/16, COM0 to COM7
(LOG)
– GND
(LED)
GND
MIN
(LOG)
4.5
4.5
4.5
–0.3
2.0
–20
NOM
MAX
5
5
5
0
V
(LOG)
5.5
5.5
5.5
0.3
0.8
–1
–30
1.6
640
85
UNIT
V
V
V
V
V
V
°C
ac characteristics (TA = –20°C to 85°C)
PARAMETER
f
(SCLK)
t
w(H)/tw(l)
tr/t
f
4
Shift clock frequency
SCLK pulse duration (high- or low-level)
Rise/fall time
p
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TEST CONDITIONS
SIN – SCLK
SCLK – LATCH
LATCH – SCLK
SIN – SCLK
MIN
40
10
10
10
10
NOM
MAX
10
100
UNIT
MHz
ns
ns
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