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PDF IS31FL3726 Data sheet ( Hoja de datos )
| Número de pieza | IS31FL3726 | |
| Descripción | 16-BIT COLOR LED DRIVER | |
| Fabricantes | ISSI | |
| Logotipo |  |
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IS31FL3726
16-BIT COLOR LED DRIVER WITH PWM CONTROL
January 2012
GENERAL DESCRIPTION
The IS31FL3726 is comprised of constant-current
drivers designed for color LEDs. The output current
value can be set using an external resistor. The output
current value can be adjusted from 5mA to 60mA
through the external resistor.
As a result, all outputs will have virtually the same
current levels.
This driver incorporates 16-bit constant t-current outputs,
a 16-bit shift register, a 16-bit latch and a 16-bit
AND-gate circuit.
These drivers have been designed using the CMOS
process.
FEATURES
Output current capability and number of outputs:
60mA × 16 outputs
Constant current range: 5mA to 60mA
Application output voltage: ≥0.4V
For anode-common LEDs
Power supply voltage range, VDD = 3.3V to 5.5V
Serial and parallel data transfer rate: 20MHz
(Max. cascade connection)
Operating temperature range, TA = −40°C ~
+85°C
Package: QFN-24
Current accuracy (All output on)
APPLICATIONAS
Cellular phones
MP3/MP4/CD/minidiskplayers
Toys
Output
voltage
≥0.4V
Current Accuracy
Between Bits Between ICs
±4% ±12%
Output
Current
5 to 60 mA
BLOCK DIAGRAM
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Figure 1 Block Diagram
Integrated Silicon Solution, Inc. — www.issi.com
Rev.A, 12/19/2011
1
datasheet pdf - http://www.DataSheet4U.net/
1 page  
IS31FL3726
CLOCK
n = 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
SERIAL-IN
LATCH
ENABLE
OUT0
OUT1
OUT2
H
L
H
L
H
L
H
L
ON
OFF
ON
OFF
ON
OFF
OUT15
SERIAL-OUT
Figure 3 Timing Dagram
ON
OFF
H
L
Warning: Latch circuit is leveled-latch circuit. Be careful because it is not triggered-latch circuit.
————————
————————
Note : The latches circuit holds data by pulling the L A T C H terminal Low. And, when L A T C H terminal is a High level, latch circuit
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—————————
——————
———————
doesn’t hold data, and it passes from the input to the output. When E N A B L E terminal is a Low level, output terminal O U T 0 to O U T 1 5
—————————
respond to the data, and on and off does. And, when E N A B L E terminal is a High level, it offs with the output terminal regardless of the
data.
Truth Table
CLOCK
————————
LATCH
—————————
ENABLE
SERIAL-IN
——————
——————
———————
OUT0 …OUT7 … OUT15
SERIAL-OUT
HL
Dn
Dn …Dn-7 …Dn-15
Dn-15
L L Dn+1
No change
Dn-14
H
L
Dn+2
Dn+2 …Dn-5 …Dn-13
Dn-13
X
L
Dn+3
Dn+2 …Dn-5 …Dn-13
Dn-13
X H Dn+3
OFF
Dn-13
—————
—————
—————
—————
Note : OUT0 to OUT15 =On when Dn = H; OUT0 to OUT15 =Off when Dn = L. In order to ensure that the level of the power supply
voltage is correct, an external resistor must be connected between R-EXT and GND.
____________
__________
Warning: When VDD < 2.5V or the start up time is less than 1ms, the following conditions, ENABLE=0, LATCH=1, SERIAL-IN=1, cannot be
configured at the same time, or SN3726 will be abnormal.
Integrated Silicon Solution, Inc. — www.issi.com
Rev.A, 12/19/2011
5
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
IS31FL3726
CLASSIFICATION REFLOW PROFILES
Profile Feature
Preheat & Soak
Temperature min (Tsmin)
Temperature max (Tsmax)
Time (Tsmin to Tsmax) (ts)
Average ramp-up rate (Tsmax to Tp)
Liquidous temperature (TL)
Time at liquidous (tL)
Peak package body temperature (Tp)*
Time (tp)** within 5°C of the specified
classification temperature (Tc)
Average ramp-down rate (Tp to Tsmax)
Time 25°C to peak temperature
Pb-Free Assembly
150°C
200°C
60-120 seconds
3°C/second max.
217°C
60-150 seconds
Max 260°C
Max 30 seconds
6°C/second max.
8 minutes max.
Figure 5 Classification Profile
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Integrated Silicon Solution, Inc. — www.issi.com
Rev.A, 12/19/2011
11
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet IS31FL3726.PDF ] | |
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