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IS31FL3235-QFLS2-TR

LED Driver,

器件类别:驱动程序和接口   

厂商名称:Integrated Silicon Solution ( ISSI )

器件标准:

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器件参数
参数名称
属性值
是否Rohs认证
符合
厂商名称
Integrated Silicon Solution ( ISSI )
包装说明
HVQCCN,
Reach Compliance Code
compliant
ECCN代码
EAR99
Factory Lead Time
12 weeks
Samacsys Description
LED Lighting Drivers LED Driver 36-channel
数据输入模式
SERIAL
接口集成电路类型
LED DISPLAY DRIVER
JESD-30 代码
S-XQCC-N36
长度
4 mm
功能数量
1
区段数
28
端子数量
36
最高工作温度
85 °C
最低工作温度
-40 °C
封装主体材料
UNSPECIFIED
封装代码
HVQCCN
封装形状
SQUARE
封装形式
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度)
NOT SPECIFIED
座面最大高度
0.8 mm
最大供电电压
5.5 V
最小供电电压
2.7 V
标称供电电压
3.6 V
表面贴装
YES
温度等级
INDUSTRIAL
端子形式
NO LEAD
端子节距
0.4 mm
端子位置
QUAD
处于峰值回流温度下的最长时间
NOT SPECIFIED
宽度
4 mm
最小 fmax
0.4 MHz
Base Number Matches
1
文档预览
IS31FL3235
28 CHANNELS LED DRIVER
October 2012
GENERAL DESCRIPTION
IS31FL3235 is comprised of 28 constant current
channels each with independent PWM control,
designed for driving LEDs. The output current of each
channel can be set at up to 38mA (Max.) by an external
resistor and independently scaled by a factor of 1, 1/2,
1/3 and 1/4. 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.
IS31FL3235 is available in QFN-36 (4mm × 4mm)
package. 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
Each channel can be scaled independently by 1,
1/2, 1/3 and 1/4
ESD HBM 8kV
-40°C to +85°C temperature range
QFN-36 (4mm × 4mm) package
APPLICATIONS
Mobile phones and other hand-held devices for
LED display
LED in home appliances
TYPICAL APPLICATION CIRCUIT
Figure 1
Typical Application Circuit
Note:
The maximum global output current is set up to 23mA when R
EXT
= 3.3kΩ. The maximum global output current can be set by external
resistor, R
EXT
. Please refer to the detail information in Page 10.
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, 10/17/2012
1
IS31FL3235
PIN CONFIGURATION
Package
Pin Configuration (Top View)
33 R_EXT
28 OUT28
OUT18 18
36 OUT1
32 GND
31 VCC
34 SDA
35 SCL
29 SDB
OUT17 17
QFN-36
OUT11 10
OUT12 11
OUT13 12
OUT14 13
GND 14
OUT15 15
PIN DESCRIPTION
No.
1 ~ 13
14
32
15 ~ 28
29
30
31
33
34
35
36
Pin
OUT2 ~ OUT14
GND
OUT15 ~ OUT28
SDB
AD
VCC
R_EXT
SDA
SCL
OUT1
Thermal Pad
Description
Output channel 2~14 for LEDs.
Ground.
Output channel 15~28 for LEDs.
Shutdown the chip when pulled low.
I2C address setting.
Power supply.
Input terminal used to connect an external resistor.
This regulates the global output current.
I2C serial data.
I2C serial clock.
Output channel 1 for LEDs.
Connect to GND.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 10/17/2012
OUT16 16
30 AD
2
IS31FL3235
ORDERING INFORMATION
Industrial Range: -40°C to +85°C
Order Part No.
IS31FL3235-QFLS2-TR
Package
QFN-36, Lead-free
QTY/Reel
2500
Copyright © 2012 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, 10/17/2012
3
IS31FL3235
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V
CC
Voltage at SCL, SDA, SDB
Voltage at OUT1 to OUT28
GND thermal current
Maximum junction temperature, T
JMAX
Storage temperature range, T
STG
Operating temperature range, T
A
-0.3V
~ +6.0V
-0.3V
~ V
CC
+0.3V
+5V
400mA
150°C
-65°C
~ +150°C
−40°C
~ +85°C
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
Typical values are T
A
= 25°C, V
CC
= 3.6V.
Symbol
V
CC
I
MAX
I
OUT
I
CC
I
SD
I
OZ
V
EXT
Parameter
Supply voltage
Maximum global output current
Output current
V
CC
= 4.2V, V
OUT
= 0.8V
R
EXT
= 2kΩ, SL = “00”
(Note 1)
V
OUT
= 0.6V
R
EXT
= 3.3kΩ, SL = “00”
V
SDB
= 0V or software shutdown
T
A
= 25°C, V
CC
= 3.6V
V
SDB
= 0V or software shutdown,
V
OUT
= 5.5V
1.3
Condition
Min.
2.7
38
23
9
2
3
5
0.2
Typ.
Max.
5.5
Unit
V
mA
mA
mA
μA
μA
V
Quiescent power supply current R
EXT
= 3.3kΩ
Shutdown current
Output leakage current
Output voltage of R-EXT pin
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
V
INPUT
= 0V
V
INPUT
= V
CC
1.4
5
(Note 2)
0.4
V
V
nA
nA
5
(Note 2)
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 10/17/2012
4
IS31FL3235
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, 10/17/2012
5
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