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IS31FL3218-GRLS2-TR

LED Driver 18 Segment 24-Pin SOP T/R

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器件参数
参数名称
属性值
欧盟限制某些有害物质的使用
Compliant
ECCN (US)
EAR99
Part Status
Active
Number of Segments
18
Minimum Operating Supply Voltage (V)
2.7
Maximum Operating Supply Voltage (V)
5.5
Typical Operating Supply Voltage (V)
5|3.3
Minimum Operating Temperature (°C)
-40
Maximum Operating Temperature (°C)
85
Supplier Temperature Grade
Industrial
系列
Packaging
Tape and Reel
Standard Package Name
SOP
Supplier Package
SOP
Pin Count
24
Mounting
Surface Mount
Package Height
2.23
Package Length
15.38
Package Width
7.52
PCB changed
24
Lead Shape
Gull-wing
参考设计
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IS31FL3218
18 CHANNELS LED DRIVER
January 2012
GENERAL DESCRIPTION
IS31FL3218 is comprised of 18 constant current
channels each with independent PWM control,
designed for driving LEDs. The output current of each
channel can be set at up to 23mA (Max.) by an external
resistor. The average LED current of each channel can
be changed in 256 steps by changing the PWM duty
cycle through an I2C interface.
The chip can be turned off by pulling the SDB pin low or
by using the software shutdown feature to reduce
power consumption. The slave address is fixed “1010
1000”.
IS31FL3218 is available in QFN-24 (4mm × 4mm) and
SOP-24. It operates from 2.7V to 5.5V over the
temperature range of -40°C to +85°C.
FEATURES
2.7V to 5.5V supply
I2C interface, automatic address increment
function
Internal reset register
Modulate LED brightness with 256 steps PWM
Each channel can be controlled independently
-40°C to +85°C temperature range
QFN-24 (4mm × 4mm), SOP-24 package
APPLICATIONS
Mobile phones and other hand-held devices for
LED display
LED in home appliances
TYPICAL APPLICATION CIRCUIT
V
Battery
V
Battery
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
3
VCC
0.1 F
OUT1
OUT2
OUT3
OUT4
1 F
VDD
4.7k
4.7k
OUT5
OUT6
OUT7
5
Micro
Controller
100k
IS31FL3218
SDA
SCL
SDB
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
OUT14
6
24
2
3.3k
R_EXT
OUT15
OUT16
4
GND
OUT17
OUT18
Figure 1
Typical Application Circuit
Note:
The maximum output current is set up to 23mA when R
EXT
= 3.3kΩ. The maximum output current can be set by external resistor, R
EXT
.
Please refer to the detail information in Page 9.
Note:
The IC should be placed far away from the mobile antenna in order to prevent the EMI.
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/31/2011
1
IS31FL3218
PIN CONFIGURATION
Package
Pin Configuration (Top View)
QFN-24
SOP-24
PIN DESCRIPTION
No.
1
2
3
4
5
6
7~23
24
Pin
OUT18
R_EXT
VCC
GND
SDA
SCL
OUT1 ~ OUT17
SDB
Thermal Pad
Description
Output channel for LEDs.
Input terminal used to connect an external resistor.
This regulates the output current.
Power supply.
Ground.
I2C serial data.
I2C serial clock.
Output channel for LEDs.
Shutdown the chip when pulled low.
Connect to GND.
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/31/2011
2
IS31FL3218
ORDERING INFORMATION
Industrial Range: -40°C to +85°C
Order Part No.
IS31FL3218-QFLS2-TR
IS31FL3218-GRLS2-TR
Package
QFN-24, Lead-free
SOP-24, Lead-free
QTY/Reel
2500
1000
Copyright © 2011 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any 
time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are 
advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. 
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the 
product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not 
authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that: 
a.) the risk of injury or damage has been minimized; 
b.) the user assume all such risks; and 
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/31/2011
3
IS31FL3218
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V
CC
Voltage at SCL, SDA, SDB
Voltage at OUT1 to OUT18
Maximum junction temperature, T
JMAX
Storage temperature range, T
STG
Operating temperature range, T
A
ESD (HBM)
-0.3V
~ +6.0V
-0.3V
~ V
CC
+0.3V
+5V
150°C
-65°C
~ +150°C
−40°C
~ +85°C
4kV
Note:
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 condition beyond those indicated in the operational sections of the specifications is not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
T
A
= -40°C ~ +85°C, V
CC
= 2.7V ~ 5.5V, unless otherwise noted. Typical values are T
A
= 25°C, V
CC
= 3.6V.
Symbol
V
CC
I
MAX
I
CC
I
SD
I
OZ
V
EXT
Parameter
Supply voltage
Maximum output
each channel
Shutdown current
Output leakage current
Output voltage of R-EXT pin
current
of V
CC
= 4.2V, V
OUT
= 0.8V
R
EXT
= 2kΩ
(Note 1)
V
SDB
= 0V or software shutdown
V
SDB
= 0V or software shutdown,
V
OUT
= 5V
1.3
Condition
Min.
2.7
38
5.25
3.1
1
Typ.
Max.
5.5
Unit
V
mA
mA
μA
μA
V
Quiescent power supply current R
EXT
= 3.3kΩ
Logic Electrical Characteristics (SDA, SCL, SDB)
V
IL
V
IH
I
IL
I
IH
Logic “0” input voltage
Logic “1” input voltage
Logic “0” input current
Logic “1” input current
V
CC
= 2.7V
V
CC
= 5.5V
1.4
5
(Note 2)
0.4
V
V
nA
nA
5
(Note 2)
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/31/2011
4
IS31FL3218
DIGITAL INPUT SWITCHING CHARACTERISTICS
(Note 2)
Symbol
f
SCL
t
BUF
t
HD, STA
t
SU, STA
t
SU, STO
t
HD, DAT
t
SU, DAT
t
LOW
t
HIGH
t
R
t
F
Parameter
Serial-Clock frequency
Bus free time between a STOP and a START
condition
Hold time (repeated) START condition
Repeated START condition setup time
STOP condition setup time
Data hold time
Data setup time
SCL clock low period
SCL clock high period
Rise time of both SDA and SCL signals,
receiving
Fall time of both SDA and SCL signals,
receiving
(Note 3)
(Note 3)
100
1.3
0.7
20+0.1Cb
20+0.1Cb
300
300
1.3
0.6
0.6
0.6
0.9
Condition
Min.
Typ.
Max.
400
Unit
kHz
μs
μs
μs
μs
μs
ns
μs
μs
ns
ns
Note 1:
The recommended minimum value of R
EXT
is 2kΩ, or it may cause a large current.
Note 2:
Guaranteed by design.
Note 3:
Cb = total capacitance of one bus line in pF. I
SINK
6mA. t
R
and t
F
measured between 0.3
×
V
CC
and 0.7
×
V
CC
.
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/31/2011
5
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