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PDF LV5235V Data sheet ( Hoja de datos )
| Número de pieza | LV5235V | |
| Descripción | 18ch LED Driver | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA1941A
LV5235V
Bi-CMOS IC
18-channel LED Driver
Overview
The LV5235V is a 18-channel LED driver IC that is capable of switching between constant-current output and open drain
output. It enables 3-wire serial bus control (address designation)/I2C serial bus control to be set arbitrarily using an external
pin. Also possible are 18-channel LED ON/OFF control and the setting of the PWM luminance in 256 steps. The device
also has a built-in fade-in/fade-out function. Up to 32 driver ICs can be connected using the slave address setting pins.
Features
• 18-channel output constant-current LED driver/open drain output LED driver (selected by using an external pin)
Supports separate ON/OFF setting for each LED output, high withstand voltage (VOUT<42V)
• In the constant-current mode (OUTSCT: L), the reference current is set by the value of resistor connected to the
external pin (RT1).
Built-in D/A (5 bits) for switching current level … 0.96mA to 30.7mA (RGB drive)
Constant current (IO max=50mA) for full-color LEDs × 18 channels
• In the open drain mode (OUTSCT: M), high current drive (IO max=100mA) × 18 channels
• In the constant-current mode (OUTSCT: H)
Only RGB6 is open drain (IO max=100mA)
• Luminance adjustment using internal PWM control (256 steps)
• 8-bit PWM luminance dimming (0% to 99.6%)
• 6-phase PWM
• Fade-in/fade-out function (PWM control priority), supporting synchronous connection
• Supports separate fade ON/OFF for each LED output (fade time common for all channels)
• Interrupt control possible for fade function
• Selection of 3-wire/I2C serial bus control signals enabled (switching using an external pin)
Slave addressing (5 bits, connection of up to 32 driver ICs possible)
• Low current consumption
• Output malfunction protection circuits (thermal protection function, UVLO detection protection function)
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment. The products mentioned herein
shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life,
aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system,
safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives
in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any
guarantee thereof. If you should intend to use our products for new introduction or other application different
from current conditions on the usage of automotive device, communication device, office equipment, industrial
equipment etc. , please consult with us about usage condition (temperature, operation time etc.) prior to the
intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely
responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
82411 SY/40611 SY 20110303-S00007 No.A1941-1/29
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
LV5235V
Continued from preceding page.
OUTSCT Settings
LED Driver Output Pin
OUTSCT pin
LED1, LED2, LED3, LED4, LED5
L=-0.2 to 0.3V
Constant current output
Built-in current value switching D/A (5 bits)
0.96mA to 30.7mA, RT1=22kΩ (f=1MHz)
M=2.0 to 3.3V
Open drain output
(terminal OPEN)
Current value is determined by external limiting resistor.
H=4.7 to 5.0V
RON=11Ω
Constant current output
Built-in current value switching D/A (5 bits)
0.96mA to 30.7mA, RT1=22kΩ (f=1MHz)
LED6
Constant current output
Built-in current value switching D/A (5 bits)
0.96mA to 30.7mA, RT1=22kΩ (f=1MHz)
Open drain output
Current value is determined by external limiting resistor.
RON=4Ω
Open drain output
Current value is determined by external limiting resistor.
RON=4Ω
Block Diagram
SVCC
SGND
OSC_OUT
CT
RT1
NC
NC
NC
NC
NC
NC
BGR
OSC
Serial Bus
I/F
I-REG D/A
PWM
BRIGHTNESS
FADE-IN/OUT
CONTROL
RLED-D/A
Pin Functions
Pin No.
Pin Name
1 SVCC
2 SCLK
3 SDATA
4 SDEN
Pin function
Power supply pin
Serial clock signal input pin
Serial data signal input pin
Serial enable signal input pin
BLED-D/A
GLED-D/A
Equivalent Circuit
SVCC
23 A0
24 A1
25 A2
26 A3
27 A4
37 CTLSCT
Slave address setting pin A0
Slave address setting pin A1
Slave address setting pin A2
Slave address setting pin A3
Slave address setting pin A4
Serial bus communication setting pin
When set to low: The 3-wire serial bus
signals are set as the input signals.
When set to high: The I2C serial bus
signals are set as the input signals.
SVCC
Continued on next page.
No.A1941-5/29
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
LV5235V
I2C bus transfer method
Start and stop conditions
During data transfer operation using the I2C bus, SDA must basically be kept in constant state while SCL is “H” as
shown below.
SCL
SDA
ts2
th2
When data is not being transferred, both SCL and SDA are set in the “H” state.
When SCL=SDA is “H,” the start condition is established when SDA is changed from “H” to “L,” and access is started.
When SCL is “H,” the stop condition is established when SDA is changed from “L” to “H,” and access is ended.
SCL
START condition
STOP condition
SDA
th1
ts3
Data transfer and acknowledgement response
After the start condition has been established, the data is transferred one byte (8 bits) at a time.
Any number of bytes of data can be transferred continuously.
Each time the 8-bit data is transferred, the ACK signal is sent from the receive side to the send side. The ACK signal is
issued when SDA on the send side is released and SDA on the receive side is set to “L” immediately after fall of the
clock pulse at the SCL eighth bit of data transfer to “L.”
When the next 1-byte transfer is left in the receive state after sending the ACK signal from the receive side, the receive
side releases SDA at the fall of the SCL ninth clock.
In the I2C bus, there is no CE signal. In its place, a 7-bit slave address is assigned to each device, and the first byte of
transfer is assigned to the command (R/W) representing the 7-bit address and subsequent transfer direction. Note that
only write is valid in this IC. The 7-bit address is transferred sequentially starting with MSB, and the eighth bit is set to
“L” which indicates a write.
Start
M
S
Slave address
L
S
A
WC
M
S
Register address
L
S
A
C
M
S
B B KB
BKB
DATA
LA
SC
BK
Stop
SCL
SDA
No.A1941-11/29
Datasheet pdf - http://www.DataSheet4U.net/
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